Appendix 3. 6x Scan Working Databases and Images

3. 6x Working Database and Metadata Table Formats

b. 6x Extended Source Working Database/Catalog Column Descriptions

The 2MASS 6x Extended Source Working Database/Catalog (6x-XSWDB/XSC) contains 389 columns of information per source entry (most of which is photometry). Because extended sources are much more complicated than point sources, it takes many more parameters to characterize them. Some parameters are required to describe the spatial extent of a source, and many more are required to characterize the photometry. In addition to a number of standard measures of photometry, the 6x-XSWDB/XSC also reports the magnitude as measured in a number of different fixed-size apertures. The columns are described in the tables below. We have separated the columns accordingto their basic function and utility.

Photometry algorithms and performance, "Large Aperture Photometry: Profile Fitting, Isophotal & Total Mags," are discussed in Section IV.5e. The information contained in the All-Sky Release Extended Source Catalog (XSC) FAQ and Primer, "How to Use the 2MASS XSC -- FAQ Sheet" (Section II.3b) is directly applicable to the 6x-XSWDB because 6x extended source processing used the same algorithms that were used for the Survey data.

Accessing the 6x-XSC

The 2MASS 6x-XSC is the subset of entries in the 6x-XSWDB that satisfy catalog selection criteria designed to produce a reliable list of extended source detections with only one measurement of objects detected multiple times. The 6x-XSC is not released as a separate table, like the All-Sky XSC, but is integrated into the 6x-XSWDB table. Entries in the 6x-XSWDB that constitute the 6x-XSC are identified by the cat column, and have a value of cat="1".

Note: If you are accessing the 6x-XSC with the IRSA/GATOR catalog query engine, you must select sources with cat="1" and you must change the reliability range to "A-F (All)" in the "Reliability Limit" dialog box. This second step is necessary because GATOR defaults to rel="A" selection, and the catalog selection rules are different than the reliability scoring rules, resulting in the inclusion in the 6x-XSC of a small fraction of sources that have reliability scoring lower than "A".

A. Name and Position Information

column Parameter Name View Format Units Description
1 jdate L 13.4f day Julian date of the source measurement accurate to ±3 minutes. This value is the mean Julian date of the scan observation in which this source falls. For a more precise value of Julian date for this source, see the jdate entry in the 6x-PSC using the pts_key index as a cross-reference.
--- Position Information
3 ra S 10.6f deg Right ascension (J2000 decimal deg) based on peak pixel.
4 dec S 10.6f deg Declination (J2000 decimal deg) based on peak pixel.
5 sup_ra L 10.6f deg Super-coadd centroid RA (J2000 decimal deg).
6 sup_dec L 10.6f deg Super-coadd centroid Dec (J2000 decimal deg).
7 glon L 7.3f deg Galactic longitude (decimal deg) based on peak pixel. Galactic coordinate for 2MASS source derived by precessing reconstructed ra and dec to B1950, and performing rotational transformation into lII, bII coordinate system. This coordinate should not be used as an astrometric reference because it has been rounded to 0.001 deg.
8 glat L 7.3f deg Galactic latitude (decimal deg) based on peak pixel. Galactic coordinate for 2MASS source derived by precessing reconstructed ra and dec to B1950, and performing rotational transformation into lII, bII coordinate system. This coordinate should not be used as an astrometric reference because it has been rounded to 0.001 deg.
9 density L 5.2f - Coadd log(density) of stars with k<14 mag. See Stellar Number Density Metric: "density".

B. Standard (recommended) Photometry: Isophotal Apertures Based on the Ks 20 mag/arcsec^2 Elliptical Isophote, and 2-D Orientation

column Parameter Name View Format Units Description
--- Isophotal photom at 20 using K fiducial ellip ap
10 r_k20fe S 6.1f arcsec 20mag/sq." isophotal K fiducial ell. ap. semi-major axis.
"Fiducial" apertures are determined for each type of total and isophotal photometry measurements. Essentially, they are used to make mag measurements for each type of photometry with the same aperture size in all three bands. The fiducial band for the total Kron photometry and 20mag/sq." isophotal photometry is the K band, and for the 21mag/sq." isophotal photometry it is the J band.
See Large Aperture Photometry: Profile Fitting, Isophotal & Total Mags.
11 j_m_k20fe S 6.3f mag J 20mag/sq." isophotal fiducial ell. ap. magnitude.
See Large Aperture Photometry: Profile Fitting, Isophotal & Total Mags.
12 j_msig_k20fe S 5.3f mag J 1-sigma uncertainty in 20mag/sq." iso.fid.ell.mag.
13 j_flg_k20fe S 1hd - J confusion flag for 20mag/sq." iso. fid. ell. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
14 h_m_k20fe S 6.3f mag H 20mag/sq." isophotal fiducial ell. ap. magnitude.
See Large Aperture Photometry: Profile Fitting, Isophotal & Total Mags.
15 h_msig_k20fe S 5.3f mag H 1-sigma uncertainty in 20mag/sq." iso.fid.ell.mag.
16 h_flg_k20fe S 1hd - H confusion flag for 20mag/sq." iso. fid. ell. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
17 k_m_k20fe S 6.3f mag K 20mag/sq." isophotal fiducial ell. ap. magnitude.
See Large Aperture Photometry: Profile Fitting, Isophotal & Total Mags.
18 k_msig_k20fe S 5.3f mag K 1-sigma uncertainty in 20mag/sq." iso.fid.ell.mag.
19 k_flg_k20fe S 1hd - K confusion flag for 20mag/sq." iso. fid. ell. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
--- Elliptical Isophotal Orientation
20 r_3sig L 5.1f arcsec 3-sigma K isophotal semi-major axis.
21 j_ba L 5.3f - J minor/major axis ratio fit to the 3-sigma isophote.
22 j_phi L 3hd deg J angle to 3-sigma major axis (E of N), quantized to 5°. For large galaxies measured as part of the 2MASS Large Galaxy Atlas (cc_flg="Z"), the position angles are quantized to 2°.
23 h_ba L 5.3f - H minor/major axis ratio fit to the 3-sigma isophote.
24 h_phi L 3hd deg H angle to 3-sigma major axis (E of N), quantized to 5°. For large galaxies measured as part of the 2MASS Large Galaxy Atlas (cc_flg="Z"), the position angles are quantized to 2°.
25 k_ba S 5.3f - K minor/major axis ratio fit to the 3-sigma isophote.
26 k_phi S 3hd deg K angle to 3-sigma major axis (E of N), quantized to 5°. For large galaxies measured as part of the 2MASS Large Galaxy Atlas (cc_flg="Z"), the position angles are quantized to 2°.
27 sup_r_3sig L 5.1f arcsec Super-coadd 3-sigma isophotal semi-major axis radius.
28 sup_ba S 5.3f - Minor/major axis ratio fit to 3-sig. super-coadd isophote.
29 sup_phi S 3hd deg Super-coadd angle to major axis (E of N), quantized to 5°. For large galaxies measured as part of the 2MASS Large Galaxy Atlas (cc_flg="Z"), the position angles are quantized to 2°.

C. Large Apertures, including Kron and Total Versions, and Surface Brightness

column Parameter Name View Format Units Description
--- Photometry using Kron elliptical aperture
30 r_fe L 6.1f arcsec K fiducial Kron elliptical aperture semi-major axis.
"Fiducial" apertures are determined for each type of total and isophotal photometry measurements. Essentially, they are used to make mag measurements for each type of photometry with the same aperture size in all three bands. The fiducial band for the total Kron photometry and 20mag/sq." isophotal photometry is the K band, and for the 21mag/sq." isophotal photometry it is the J band.
See Large Aperture Photometry: Profile Fitting, Isophotal & Total Mags.
31 j_m_fe L 6.3f mag J fiducial Kron elliptical aperture magnitude.
See Large Aperture Photometry: Profile Fitting, Isophotal & Total Mags.
32 j_msig_fe L 5.3f mag J 1-sigma uncertainty in fiducial Kron ell. mag.
33 j_flg_fe L 1hd - J confusion flag for fiducial Kron ell. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
34 h_m_fe L 6.3f mag H fiducial Kron elliptical aperture magnitude.
See Large Aperture Photometry: Profile Fitting, Isophotal & Total Mags.
35 h_msig_fe L 5.3f mag H 1-sigma uncertainty in fiducial Kron ell. mag.
36 h_flg_fe L 1hd - H confusion flag for fiducial Kron ell. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
37 k_m_fe L 6.3f mag K fiducial Kron ell. mag aperture magnitude.
See Large Aperture Photometry: Profile Fitting, Isophotal & Total Mags.
38 k_msig_fe L 5.3f mag K 1-sigma uncertainty in fiducial Kron ell. mag.
39 k_flg_fe L 1hd - K confusion flag for fiducial Kron ell. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
--- Total Photometry from extrapolation of fit to radial profile
40 r_ext S 7.2f arcsec extrapolation/total radius.
See Large Aperture Photometry: Profile Fitting, Isophotal & Total Mags.
41 j_m_ext S 6.3f mag J mag from fit extrapolation.
See Large Aperture Photometry: Profile Fitting, Isophotal & Total Mags.
42 j_msig_ext L 5.3f mag J 1-sigma uncertainty in mag from fit extrapolation.
43 j_pchi S 6.3f - J chi^2 of fit to rad. profile (LCSB: alpha scale len).
If the source is not an LCSB, these fields contain the reduced chi-squared values for each band of the modified exponential fits to the elliptical radial profiles, used for extrapolation and half-light estimates. For LCSBs, they contain the alpha scale lengths.
44 h_m_ext S 6.3f mag H mag from fit extrapolation.
See Large Aperture Photometry: Profile Fitting, Isophotal & Total Mags.
45 h_msig_ext S 5.3f mag H 1-sigma uncertainty in mag from fit extrapolation.
46 h_pchi L 6.3f - H chi^2 of fit to rad. profile (LCSB: alpha scale len).
If the source is not an LCSB, these fields contain the reduced chi-squared values for each band of the modified exponential fits to the elliptical radial profiles, used for extrapolation and half-light estimates. For LCSBs, they contain the alpha scale lengths.
47 k_m_ext S 6.3f mag K mag from fit extrapolation.
See Large Aperture Photometry: Profile Fitting, Isophotal & Total Mags.
48 k_msig_ext S 5.3f mag K 1-sigma uncertainty in mag from fit extrapolation.
49 k_pchi L 6.3f - K chi^2 of fit to rad. profile (LCSB: alpha scale len).
If the source is not an LCSB, these fields contain the reduced chi-squared values for each band of the modified exponential fits to the elliptical radial profiles, used for extrapolation and half-light estimates. For LCSBs, they contain the alpha scale lengths.
--- Effective radii and mean surface brightness
50 j_r_eff L 6.2f arcsec J half-light (integrated half-flux point) radius.
See Half-Light "Effective" Aperture & Concentration Index
Beware the circularizing effect of the PSF on small galaxies. See The 2MASS Beam.
51 j_mnsurfb_eff L 5.2f mag J mean surface brightness at the half-light radius.
See Half-Light "Effective" Aperture & Concentration Index
Beware the circularizing effect of the PSF on small galaxies. See The 2MASS Beam.
52 h_r_eff L 6.2f arcsec H half-light (integrated half-flux point) radius.
See Half-Light "Effective" Aperture & Concentration Index
Beware the circularizing effect of the PSF on small galaxies. See The 2MASS Beam.
53 h_mnsurfb_eff L 5.2f mag H mean surface brightness at the half-light radius.
See Half-Light "Effective" Aperture & Concentration Index
Beware the circularizing effect of the PSF on small galaxies. See The 2MASS Beam.
54 k_r_eff L 6.2f arcsec K half-light (integrated half-flux point) radius.
See Half-Light "Effective" Aperture & Concentration Index
Beware the circularizing effect of the PSF on small galaxies. See The 2MASS Beam.
55 k_mnsurfb_eff L 5.2f mag K mean surface brightness at the half-light radius.
See Half-Light "Effective" Aperture & Concentration Index
Beware the circularizing effect of the PSF on small galaxies. See The 2MASS Beam.
56 j_con_indx L 5.2f - J concentration index r_75%/r_25%.
The concentration index for the galaxy in each band is the ratio of the radii which contain 75% and 25% of the total light, r_75%/r_25%.
See Half-Light "Effective" Aperture & Concentration Index
Beware the circularizing effect of the PSF on small galaxies. See The 2MASS Beam.
57 h_con_indx L 5.2f - H concentration index r_75%/r_25%.
The concentration index for the galaxy in each band is the ratio of the radii which contain 75% and 25% of the total light, r_75%/r_25%.
See Half-Light "Effective" Aperture & Concentration Index
Beware the circularizing effect of the PSF on small galaxies. See The 2MASS Beam.
58 k_con_indx L 5.2f - K concentration index r_75%/r_25%.
The concentration index for the galaxy in each band is the ratio of the radii which contain 75% and 25% of the total light, r_75%/r_25%.
See Half-Light "Effective" Aperture & Concentration Index
Beware the circularizing effect of the PSF on small galaxies. See The 2MASS Beam.
59 j_peak L 6.2f mag J peak pixel brightness.
60 h_peak L 6.2f mag H peak pixel brightness.
61 k_peak L 6.2f mag K peak pixel brightness.
62 j_5surf L 6.2f mag J central surface brightness (r<=5).
63 h_5surf L 6.2f mag H central surface brightness (r<=5).
64 k_5surf L 6.2f mag K central surface brightness (r<=5).

D. Miscellaneous Photometry and Characterization Measures


column Parameter Name View Format Units Description
--- Quality and Star-Galaxy Discrimination Scores
65 rel S 1s - Reliability flag. Single character flag that is related to the probability that the extraction is a valid detection of a near infrared source on the sky at the time of the observation, and that the source is resolved relative to the 2MASS point spread function.

  • "A" - P>90%
  • "B" - 80%<P<90%
  • "C" - 70%<P<80%
  • "D" - 50%<P<70%
  • "E" - 20%<P<50%
  • "F" - P<20%

This flag does not provide information about the quality of the position or flux measurement. For that, users should refer to e_score, g_score, vc, cc_flg and positional and photometric uncertainties.

66 e_score L 5.2f - extended score: 1(extended) < e_score < 2(point-like).
See the FAQ: Star-Galaxy Separation: How do the E and G-scores work?
67 g_score L 5.2f - galaxy score: 1(extended) < g_score < 2(point-like).
See the FAQ: Star-Galaxy Separation: How do the E and G-scores work?
68 vc L 2hd - visual verification score for source.
The visual classification score gives the source type for those sources examined "by eye":
-2 = unknown
-1 = no verification (i.e., not examined)
1 = galaxy
2 = non-extended (e.g., star, double, triple, artifact)
See Visual Inspection of Extended Sources
69 cc_flg S 1s - indicates artifact contamination and/or confusion.
The contamination/confusion flag indicates whether the source's photometry and position may be affected by artifacts of, or confusion with, nearby bright stars. The flag consists of a single character string. Sources are tested for contamination and/or confusion in the order given below, and once a flag is applied to the source, testing is stopped in that band. The flag values indicate the source may be:

See Extended Source Confusion Flag
70 spos S 5d - Number of scans covering the position of this extraction. This is computed during the WDB merging process, using boundaries of each scan that are great-circle interpolations connecting the 3-band coverage corners. Since actual scans "wiggle" slightly in RA due to telescope motions, the actual number of coverages for extractions near scan edges can differ from spos. A null value in this column indicates that the source was not included in the source merging process because of low reliability, or proximity to a scan edge.
71 sdet S 5d - Total number of detections of this extraction in any band in this WDB table, in all scans covering its position, determined during the WDB merging processing. It is possible to have sdet > spos for extractions because extended sources may have in-scan duplicate extractions in the Atlas Image overlap regions, and near scan edges because of the approximations used to determine spos. A null value in this column indicates that the source was not included in the source merging process because of low reliability, or proximity to a scan edge.
72 gcntr S 5d - Unique identification number of the record in the Merged Extended Source Information table corresponding to the merged "group" containing this extraction. The merged "group" contains the combined position and brightness information for all extractions falling within ~5" of each other in the WDB. In confused cases where this extraction appears in more than one group (gcnf>1), the indicated group is the one to which this extraction lies closest. A null value in this column indicates that the source either that the position of this extraction was observed only once, or it was not included in the source merging process because of low reliability, or proximity to a scan edge.
73 gcnf S 1d - Merging confusion flag. Single digit flag that indicates whether this extraction was associated with more than one group during the WDB merging process.

  • "0,1" - Extraction associated with only one group.
  • "2,3" - Extraction associated with more than one group. Group indicated in the gcntr column is one whose center lies closest to the position of this extraction.
  • "null" - Extraction was observed only once, or was not included in the source merging process because of low reliability, or proximity to a scan edge.
--- Postage-stamp image parameter
74 im_nx L 4hd - size of postage stamp image in pixels.
Note - 6x XSWDB/XSC postage stamp images are not yet available.
All-Sky Release XSC (both jpeg and FITS versions) may be accessed from the 2MASS All-Sky XSC Full-Resolution Image Server
--- Isophotal photom at 20 using K fiducial circ ap
75 r_k20fc L 5.1f arcsec 20mag/sq." isophotal K fiducial circular ap. radius.
"Fiducial" apertures are determined for each type of total and isophotal photometry measurements. Essentially, they are used to make mag measurements for each type of photometry with the same aperture size in all three bands. The fiducial band for the total Kron photometry and 20mag/sq." isophotal photometry is the K band, and for the 21mag/sq." isophotal photometry it is the J band. Cautionary note: A negative value in this column indicates that the source measurement was corrupted, usually due to confusion from a nearby source, and the derived radius is not meaningful.
76 j_m_k20fc L 6.3f mag J 20mag/sq." isophotal fiducial circ. ap. mag.
77 j_msig_k20fc L 5.3f mag J 1-sigma uncertainty in 20mag/sq." iso.fid.circ. mag.
78 j_flg_k20fc L 1hd - J confusion flag for 20mag/sq." iso. fid. circ. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
79 h_m_k20fc L 6.3f mag H 20mag/sq." isophotal fiducial circ. ap. mag.
80 h_msig_k20fc L 5.3f mag H 1-sigma uncertainty in 20mag/sq." iso.fid.circ. mag.
81 h_flg_k20fc L 1hd - H confusion flag for 20mag/sq." iso. fid. circ. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
82 k_m_k20fc L 6.3f mag K 20mag/sq." isophotal fiducial circ. ap. mag.
83 k_msig_k20fc L 5.3f mag K 1-sigma uncertainty in 20mag/sq." iso.fid.circ. mag.
84 k_flg_k20fc L 1hd - K confusion flag for 20mag/sq." iso. fid. circ. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
--- Kron elliptical photometry
85 j_r_e L 5.1f arcsec J Kron elliptical aperture semi-major axis.
86 j_m_e L 6.3f mag J Kron elliptical aperture magnitude.
87 j_msig_e L 5.3f mag J 1-sigma uncertainty in Kron elliptical mag.
88 j_flg_e L 1hd - J confusion flag for Kron elliptical mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
89 h_r_e L 5.1f arcsec H Kron elliptical aperture semi-major axis.
90 h_m_e L 6.3f mag H Kron elliptical aperture magnitude.
91 h_msig_e L 5.3f mag H 1-sigma uncertainty in Kron elliptical mag.
92 h_flg_e L 1hd - H confusion flag for Kron elliptical mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
93 k_r_e L 5.1f arcsec K Kron elliptical aperture semi-major axis.
94 k_m_e L 6.3f mag K Kron elliptical aperture magnitude.
95 k_msig_e L 5.3f mag K 1-sigma uncertainty in Kron elliptical mag.
96 k_flg_e L 1hd - K confusion flag for Kron elliptical mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
--- Kron circular photometry
97 j_r_c L 5.1f arcsec J Kron circular aperture radius.
98 j_m_c L 6.3f mag J Kron circular aperture magnitude.
99 j_msig_c L 5.3f mag J 1-sigma uncertainty in Kron circular mag.
100 j_flg_c L 1hd - J confusion flag for Kron circular mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
101 h_r_c L 5.1f arcsec H Kron circular aperture radius.
102 h_m_c L 6.3f mag H Kron circular aperture magnitude.
103 h_msig_c L 5.3f mag H 1-sigma uncertainty in Kron circular mag.
104 h_flg_c L 1hd - H confusion flag for Kron circular mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
105 k_r_c L 5.1f arcsec K Kron circular aperture radius.
106 k_m_c L 6.3f mag K Kron circular aperture magnitude.
107 k_msig_c L 5.3f mag K 1-sigma uncertainty in Kron circular mag.
108 k_flg_c L 1hd - K confusion flag for Kron circular mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
--- Kron photometry using K fiducial circular aperture
109 r_fc L 5.1f arcsec K fiducial Kron circular aperture radius.
"Fiducial" apertures are determined for each type of total and isophotal photometry measurements. Essentially, they are used to make mag measurements for each type of photometry with the same aperture size in all three bands. The fiducial band for the total Kron photometry and 20mag/sq." isophotal photometry is the K band, and for the 21mag/sq." isophotal photometry it is the J band.
110 j_m_fc L 6.3f mag J fiducial Kron circular magnitude.
111 j_msig_fc L 5.3f mag J 1-sigma uncertainty in fiducial Kron circ. mag.
112 j_flg_fc L 1hd - J confusion flag for fiducial Kron circ. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
113 h_m_fc L 6.3f mag H fiducial Kron circular magnitude.
114 h_msig_fc L 5.3f mag H 1-sigma uncertainty in fiducial Kron circ. mag.
115 h_flg_fc L 1hd - H confusion flag for fiducial Kron circ. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
116 k_m_fc L 6.3f mag K fiducial Kron circular magnitude.
117 k_msig_fc L 5.3f mag K 1-sigma uncertainty in fiducial Kron circ. mag.
118 k_flg_fc L 1hd - K confusion flag for fiducial Kron circ. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
--- Isophotal photom at 20 mag/sq.arcsec using ell ap
119 j_r_i20e L 5.1f arcsec J 20mag/sq." isophotal elliptical ap. semi-major axis.
120 j_m_i20e L 6.3f mag J 20mag/sq." isophotal elliptical ap. magnitude.
121 j_msig_i20e L 5.3f mag J 1-sigma uncertainty in 20mag/sq." iso. ell. mag.
122 j_flg_i20e L 1hd - J confusion flag for 20mag/sq." iso. ell. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
123 h_r_i20e L 5.1f arcsec H 20mag/sq." isophotal elliptical ap. semi-major axis.
124 h_m_i20e L 6.3f mag H 20mag/sq." isophotal elliptical ap. magnitude.
125 h_msig_i20e L 5.3f mag H 1-sigma uncertainty in 20mag/sq." iso. ell. mag.
126 h_flg_i20e L 1hd - H confusion flag for 20mag/sq." iso. ell. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
127 k_r_i20e L 5.1f arcsec K 20mag/sq." isophotal elliptical ap. semi-major axis.
128 k_m_i20e L 6.3f mag K 20mag/sq." isophotal elliptical ap. magnitude.
129 k_msig_i20e L 5.3f mag K 1-sigma uncertainty in 20mag/sq." iso. ell. mag.
130 k_flg_i20e L 1hd - K confusion flag for 20mag/sq." iso. ell. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
--- Isophotal photom at 20 mag/sq.arcsec using circ ap
131 j_r_i20c L 5.1f arcsec J 20mag/sq." isophotal circular aperture radius.
132 j_m_i20c L 6.3f mag J 20mag/sq." isophotal circular ap. magnitude.
133 j_msig_i20c L 5.3f mag J 1-sigma uncertainty in 20mag/sq." iso. circ. mag.
134 j_flg_i20c L 1hd - J confusion flag for 20mag/sq." iso. circ. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
135 h_r_i20c L 5.1f arcsec H 20mag/sq." isophotal circular aperture radius.
136 h_m_i20c L 6.3f mag H 20mag/sq." isophotal circular ap. magnitude.
137 h_msig_i20c L 5.3f mag H 1-sigma uncertainty in 20mag/sq." iso. circ. mag.
138 h_flg_i20c L 1hd - H confusion flag for 20mag/sq." iso. circ. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
139 k_r_i20c L 5.1f arcsec K 20mag/sq." isophotal circular aperture radius.
140 k_m_i20c L 6.3f mag K 20mag/sq." isophotal circular ap. magnitude.
141 k_msig_i20c L 5.3f mag K 1-sigma uncertainty in 20mag/sq." iso. circ. mag.
142 k_flg_i20c L 1hd - K confusion flag for 20mag/sq." iso. circ. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
--- Isophotal photom at 21 mag/sq.arcsec using ell ap
143 j_r_i21e L 5.1f arcsec J 21mag/sq." isophotal elliptical ap. semi-major axis.
144 j_m_i21e L 6.3f mag J 21mag/sq." isophotal elliptical ap. magnitude.
145 j_msig_i21e L 5.3f mag J 1-sigma uncertainty in 21mag/sq." iso. ell. mag.
146 j_flg_i21e L 1hd - J confusion flag for 21mag/sq." iso. ell. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
147 h_r_i21e L 5.1f arcsec H 21mag/sq." isophotal elliptical ap. semi-major axis.
148 h_m_i21e L 6.3f mag H 21mag/sq." isophotal elliptical ap. magnitude.
149 h_msig_i21e L 5.3f mag H 1-sigma uncertainty in 21mag/sq." iso. ell. mag.
150 h_flg_i21e L 1hd - H confusion flag for 21mag/sq." iso. ell. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
151 k_r_i21e L 5.1f arcsec K 21mag/sq." isophotal elliptical ap. semi-major axis.
152 k_m_i21e L 6.3f mag K 21mag/sq." isophotal elliptical ap. magnitude.
153 k_msig_i21e L 5.3f mag K 1-sigma uncertainty in 21mag/sq." iso. ell. mag.
154 k_flg_i21e L 1hd - K confusion flag for 21mag/sq." iso. ell. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
--- Isophotal photom at 21 using J fiducial ellip ap
155 r_j21fe L 5.1f arcsec 21mag/sq." isophotal J fiducial ell. ap. semi-major axis.
"Fiducial" apertures are determined for each type of total and isophotal photometry measurements. Essentially, they are used to make mag measurements for each type of photometry with the same aperture size in all three bands. The fiducial band for the total Kron photometry and 20mag/sq." isophotal photometry is the K band, and for the 21mag/sq." isophotal photometry it is the J band.
156 j_m_j21fe L 6.3f mag J 21mag/sq." isophotal fiducial ell. ap. magnitude.
157 j_msig_j21fe L 5.3f mag J 1-sigma uncertainty in 21mag/sq." iso.fid.ell.mag.
158 j_flg_j21fe L 1hd - J confusion flag for 21mag/sq." iso. fid. ell. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
159 h_m_j21fe L 6.3f mag H 21mag/sq." isophotal fiducial ell. ap. magnitude.
160 h_msig_j21fe L 5.3f mag H 1-sigma uncertainty in 21mag/sq." iso.fid.ell.mag.
161 h_flg_j21fe L 1hd - H confusion flag for 21mag/sq." iso. fid. ell. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
162 k_m_j21fe L 6.3f mag K 21mag/sq." isophotal fiducial ell. ap. magnitude.
163 k_msig_j21fe L 5.3f mag K 1-sigma uncertainty in 21mag/sq." iso.fid.ell.mag.
164 k_flg_j21fe L 1hd - K confusion flag for 21mag/sq." iso. fid. ell. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
--- Isophotal photom at 21 using circ ap
165 j_r_i21c L 5.1f arcsec J 21mag/sq." isophotal circular aperture radius.
166 j_m_i21c L 6.3f mag J 21mag/sq." isophotal circular ap. magnitude.
167 j_msig_i21c L 5.3f mag J 1-sigma uncertainty in 21mag/sq." iso. circ. mag.
168 j_flg_i21c L 1hd - J confusion flag for 21mag/sq." iso. circ. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
169 h_r_i21c L 5.1f arcsec H 21mag/sq." isophotal circular aperture radius.
170 h_m_i21c L 6.3f mag H 21mag/sq." isophotal circular ap. magnitude.
171 h_msig_i21c L 5.3f mag H 1-sigma uncertainty in 21mag/sq." iso. circ. mag.
172 h_flg_i21c L 1hd - H confusion flag for 21mag/sq." iso. circ. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
173 k_r_i21c L 5.1f arcsec K 21mag/sq." isophotal circular aperture radius.
174 k_m_i21c L 6.3f mag K 21mag/sq." isophotal circular ap. magnitude.
175 k_msig_i21c L 5.3f mag K 1-sigma uncertainty in 21mag/sq." iso. circ. mag.
176 k_flg_i21c L 1hd - K confusion flag for 21mag/sq." iso. circ. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
--- Isophotal photom at 21 mag/sq.arcsec using J fiducial circ ap
177 r_j21fc L 5.1f arcsec 21mag/sq." isophotal J fiducial circular ap. radius.
"Fiducial" apertures are determined for each type of total and isophotal photometry measurements. Essentially, they are used to make mag measurements for each type of photometry with the same aperture size in all three bands. The fiducial band for the total Kron photometry and 20mag/sq." isophotal photometry is the K band, and for the 21mag/sq." isophotal photometry it is the J band.
178 j_m_j21fc L 6.3f mag J 21mag/sq." isophotal fiducial circ. ap. mag.
179 j_msig_j21fc L 5.3f mag J 1-sigma uncertainty in 21mag/sq." iso.fid.circ.mag.
180 j_flg_j21fc L 1hd - J confusion flag for 21mag/sq." iso. fid. circ. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
181 h_m_j21fc L 6.3f mag H 21mag/sq." isophotal fiducial circ. ap. mag.
182 h_msig_j21fc L 5.3f mag H 1-sigma uncertainty in 21mag/sq." iso.fid.circ.mag.
183 h_flg_j21fc L 1hd - H confusion flag for 21mag/sq." iso. fid. circ. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
184 k_m_j21fc L 6.3f mag K 21mag/sq." isophotal fiducial circ. ap. mag.
185 k_msig_j21fc L 5.3f mag K 1-sigma uncertainty in 21mag/sq." iso.fid.circ.mag.
186 k_flg_j21fc L 1hd - K confusion flag for 21mag/sq." iso. fid. circ. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
--- Photometry from fixed circular aperture
187 j_m_5 L 6.3f mag J 5 arcsec radius circular aperture magnitude.
188 j_msig_5 L 5.3f mag J 1-sigma uncertainty in 5 arcsec circular ap. mag.
189 j_flg_5 L 1hd - J confusion flag for 5 arcsec circular ap. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
190 h_m_5 L 6.3f mag H 5 arcsec radius circular aperture magnitude.
191 h_msig_5 L 5.3f mag H 1-sigma uncertainty in 5 arcsec circular ap. mag.
192 h_flg_5 L 1hd - H confusion flag for 5 arcsec circular ap. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
193 k_m_5 L 6.3f mag K 5 arcsec radius circular aperture magnitude.
194 k_msig_5 L 5.3f mag K 1-sigma uncertainty in 5 arcsec circular ap. mag.
195 k_flg_5 L 1hd - K confusion flag for 5 arcsec circular ap. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
196 j_m_7 L 6.3f mag J 7 arcsec radius circular aperture magnitude.
197 j_msig_7 L 5.3f mag J 1-sigma uncertainty in 7 arcsec circular ap. mag.
198 j_flg_7 L 1hd - J confusion flag for 7 arcsec circular ap. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
199 h_m_7 L 6.3f mag H 7 arcsec radius circular aperture magnitude.
200 h_msig_7 L 5.3f mag H 1-sigma uncertainty in 7 arcsec circular ap. mag.
201 h_flg_7 L 1hd - H confusion flag for 7 arcsec circular ap. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
202 k_m_7 L 6.3f mag K 7 arcsec radius circular aperture magnitude.
203 k_msig_7 L 5.3f mag K 1-sigma uncertainty in 7 arcsec circular ap. mag.
204 k_flg_7 L 1hd - K confusion flag for 7 arcsec circular ap. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
205 j_m_10 L 6.3f mag J 10 arcsec radius circular aperture magnitude.
206 j_msig_10 L 5.3f mag J 1-sigma uncertainty in 10 arcsec circular ap. mag.
207 j_flg_10 L 1hd - J confusion flag for 10 arcsec circular ap. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
208 h_m_10 L 6.3f mag H 10 arcsec radius circular aperture magnitude.
209 h_msig_10 L 5.3f mag H 1-sigma uncertainty in 10 arcsec circular ap. mag.
210 h_flg_10 L 1hd - H confusion flag for 10 arcsec circular ap. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
211 k_m_10 L 6.3f mag K 10 arcsec radius circular aperture magnitude.
212 k_msig_10 L 5.3f mag K 1-sigma uncertainty in 10 arcsec circular ap. mag.
213 k_flg_10 L 1hd - K confusion flag for 10 arcsec circular ap. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
214 j_m_15 L 6.3f mag J 15 arcsec radius circular aperture magnitude.
215 j_msig_15 L 5.3f mag J 1-sigma uncertainty in 15 arcsec circular ap. mag.
216 j_flg_15 L 1hd - J confusion flag for 15 arcsec circular ap. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
217 h_m_15 L 6.3f mag H 15 arcsec radius circular aperture magnitude.
218 h_msig_15 L 5.3f mag H 1-sigma uncertainty in 15 arcsec circular ap. mag.
219 h_flg_15 L 1hd - H confusion flag for 15 arcsec circular ap. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
220 k_m_15 L 6.3f mag K 15 arcsec radius circular aperture magnitude.
221 k_msig_15 L 5.3f mag K 1-sigma uncertainty in 15 arcsec circular ap. mag.
222 k_flg_15 L 1hd - K confusion flag for 15 arcsec circular ap. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
223 j_m_20 L 6.3f mag J 20 arcsec radius circular aperture magnitude.
224 j_msig_20 L 5.3f mag J 1-sigma uncertainty in 20 arcsec circular ap. mag.
225 j_flg_20 L 1hd - J confusion flag for 20 arcsec circular ap. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
226 h_m_20 L 6.3f mag H 20 arcsec radius circular aperture magnitude.
227 h_msig_20 L 5.3f mag H 1-sigma uncertainty in 20 arcsec circular ap. mag.
228 h_flg_20 L 1hd - H confusion flag for 20 arcsec circular ap. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
229 k_m_20 L 6.3f mag K 20 arcsec radius circular aperture magnitude.
230 k_msig_20 L 5.3f mag K 1-sigma uncertainty in 20 arcsec circular ap. mag.
231 k_flg_20 L 1hd - K confusion flag for 20 arcsec circular ap. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
232 j_m_25 L 6.3f mag J 25 arcsec radius circular aperture magnitude.
233 j_msig_25 L 5.3f mag J 1-sigma uncertainty in 25 arcsec circular ap. mag.
234 j_flg_25 L 1hd - J confusion flag for 25 arcsec circular ap. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
235 h_m_25 L 6.3f mag H 25 arcsec radius circular aperture magnitude.
236 h_msig_25 L 5.3f mag H 1-sigma uncertainty in 25 arcsec circular ap. mag.
237 h_flg_25 L 1hd - H confusion flag for 25 arcsec circular ap. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
238 k_m_25 L 6.3f mag K 25 arcsec radius circular aperture magnitude.
239 k_msig_25 L 5.3f mag K 1-sigma uncertainty in 25 arcsec circular ap. mag.
240 k_flg_25 L 1hd - K confusion flag for 25 arcsec circular ap. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
241 j_m_30 L 6.3f mag J 30 arcsec radius circular aperture magnitude.
242 j_msig_30 L 5.3f mag J 1-sigma uncertainty in 30 arcsec circular ap. mag.
243 j_flg_30 L 1hd - J confusion flag for 30 arcsec circular ap. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
244 h_m_30 L 6.3f mag H 30 arcsec radius circular aperture magnitude.
245 h_msig_30 L 5.3f mag H 1-sigma uncertainty in 30 arcsec circular ap. mag.
246 h_flg_30 L 1hd - H confusion flag for 30 arcsec circular ap. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
247 k_m_30 L 6.3f mag K 30 arcsec radius circular aperture magnitude.
248 k_msig_30 L 5.3f mag K 1-sigma uncertainty in 30 arcsec circular ap. mag.
249 k_flg_30 L 1hd - K confusion flag for 30 arcsec circular ap. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
250 j_m_40 L 6.3f mag J 40 arcsec radius circular aperture magnitude.
251 j_msig_40 L 5.3f mag J 1-sigma uncertainty in 40 arcsec circular ap. mag.
252 j_flg_40 L 1hd - J confusion flag for 40 arcsec circular ap. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
253 h_m_40 L 6.3f mag H 40 arcsec radius circular aperture magnitude.
254 h_msig_40 L 5.3f mag H 1-sigma uncertainty in 40 arcsec circular ap. mag.
255 h_flg_40 L 1hd - H confusion flag for 40 arcsec circular ap. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
256 k_m_40 L 6.3f mag K 40 arcsec radius circular aperture magnitude.
257 k_msig_40 L 5.3f mag K 1-sigma uncertainty in 40 arcsec circular ap. mag.
258 k_flg_40 L 1hd - K confusion flag for 40 arcsec circular ap. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
259 j_m_50 L 6.3f mag J 50 arcsec radius circular aperture magnitude.
260 j_msig_50 L 5.3f mag J 1-sigma uncertainty in 50 arcsec circular ap. mag.
261 j_flg_50 L 1hd - J confusion flag for 50 arcsec circular ap. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:

0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative


If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
262 h_m_50 L 6.3f mag H 50 arcsec radius circular aperture magnitude.
263 h_msig_50 L 5.3f mag H 1-sigma uncertainty in 50 arcsec circular ap. mag.
264 h_flg_50 L 1hd - H confusion flag for 50 arcsec circular ap. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
265 k_m_50 L 6.3f mag K 50 arcsec radius circular aperture magnitude.
266 k_msig_50 L 5.3f mag K 1-sigma uncertainty in 50 arcsec circular ap. mag.
267 k_flg_50 L 1hd - K confusion flag for 50 arcsec circular ap. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
268 j_m_60 L 6.3f mag J 60 arcsec radius circular aperture magnitude.
269 j_msig_60 L 5.3f mag J 1-sigma uncertainty in 60 arcsec circular ap. mag.
270 j_flg_60 L 1hd - J confusion flag for 60 arcsec circular ap. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
271 h_m_60 L 6.3f mag H 60 arcsec radius circular aperture magnitude.
272 h_msig_60 L 5.3f mag H 1-sigma uncertainty in 60 arcsec circular ap. mag.
273 h_flg_60 L 1hd - H confusion flag for 60 arcsec circular ap. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
274 k_m_60 L 6.3f mag K 60 arcsec radius circular aperture magnitude.
275 k_msig_60 L 5.3f mag K 1-sigma uncertainty in 60 arcsec circular ap. mag.
276 k_flg_60 L 1hd - K confusion flag for 60 arcsec circular ap. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
277 j_m_70 L 6.3f mag J 70 arcsec radius circular aperture magnitude.
278 j_msig_70 L 5.3f mag J 1-sigma uncertainty in 70 arcsec circular ap. mag.
279 j_flg_70 L 1hd - J confusion flag for 70 arcsec circular ap. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
280 h_m_70 L 6.3f mag H 70 arcsec radius circular aperture magnitude.
281 h_msig_70 L 5.3f mag H 1-sigma uncertainty in 70 arcsec circular ap. mag.
282 h_flg_70 L 1hd - H confusion flag for 70 arcsec circular ap. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
283 k_m_70 L 6.3f mag K 70 arcsec radius circular aperture magnitude.
284 k_msig_70 L 5.3f mag K 1-sigma uncertainty in 70 arcsec circular ap. mag.
285 k_flg_70 L 1hd - K confusion flag for 70 arcsec circular ap. mag.
The confusion flags [jhk]_flg
for each mag are defined as follows:
0 if no other sources within aperture used
1 if ap contained pixels masked off in coadd
2 if ap contained pixels masked off due to neighboring sources
3 if ap contained pixels that had a point source flux subtracted off
4 if ap contained pixels within bright star mask
5 if ap contained pixels masked off due to persistence
6 if aperture ran into coadd boundary
7 if ap contained pixels within bright galaxy mask
9 if integrated flux is negative
If the integrated flux is negative, a mag value is calculated using
    BFMag = 99.0 - [ZERO_CAL - 2.5 log10(|flux|)];
the resulting mag range is between ~ 75 and 99.
--- System photometry
286 j_m_sys L 6.3f mag J system photometry magnitude.
The system flux includes the flux from this extended source and anything else in the immediate area, including stars and neighboring galaxies that "touch" this source.
287 j_msig_sys L 5.3f mag J 1-sigma uncertainty in system photometry mag.
288 h_m_sys L 6.3f mag H system photometry magnitude.
The system flux includes the flux from this extended source and anything else in the immediate area, including stars and neighboring galaxies that "touch" this source.
289 h_msig_sys L 5.3f mag H 1-sigma uncertainty in system photometry mag.
290 k_m_sys L 6.3f mag K system photometry magnitude.
The system flux includes the flux from this extended source and anything else in the immediate area, including stars and neighboring galaxies that "touch" this source.
291 k_msig_sys L 5.3f mag K 1-sigma uncertainty in system photometry mag.
292 sys_flg L 1hd - system flag: 0=no system, 1=nearby galaxy flux incl. in mag.
293 contam_flg L 1hd - contamination flag: 0=no stars, 1=stellar flux incl. in mag.
--- 5-sigma area ratios
294 j_5sig_ba L 5.3f - J minor/major axis ratio fit to the 5-sigma isophote.
295 j_5sig_phi L 3hd deg J angle to 5-sigma major axis (E of N).
296 h_5sig_ba L 5.3f - H minor/major axis ratio fit to the 5-sigma isophote.
297 h_5sig_phi L 3hd deg H angle to 5-sigma major axis (E of N).
298 k_5sig_ba L 5.3f - K minor/major axis ratio fit to the 5-sigma isophote.
299 k_5sig_phi L 3hd deg K angle to 5-sigma major axis (E of N).
--- 5-sigma to 3-sigma area
300 j_d_area L 3hd - J 5-sigma to 3-sigma differential area.
301 j_perc_darea L 3hd - J 5-sigma to 3-sigma percent area change.
302 h_d_area L 3hd - H 5-sigma to 3-sigma differential area.
303 h_perc_darea L 3hd - H 5-sigma to 3-sigma percent area change.
304 k_d_area L 3hd - K 5-sigma to 3-sigma differential area.
305 k_perc_darea L 3hd - K 5-sigma to 3-sigma percent area change.
--- Bi-symmetric quantities
306 j_bisym_rat L 5.3f - J bi-symmetric flux ratio.
307 j_bisym_chi L 6.3f - J bi-symmetric cross-correlation chi.
308 h_bisym_rat L 5.3f - H bi-symmetric flux ratio.
309 h_bisym_chi L 6.3f - H bi-symmetric cross-correlation chi.
310 k_bisym_rat L 5.3f - K bi-symmetric flux ratio.
311 k_bisym_chi L 6.3f - K bi-symmetric cross-correlation chi.
--- Parameters for extended src discrimination from point
srcs
312 j_sh0 L 5.2f - J ridge shape (LCSB: BSNR limit).
313 j_sig_sh0 L 5.2f - J ridge shape sigma (LCSB: B2SNR limit).
314 h_sh0 L 5.2f - H ridge shape (LCSB: BSNR limit).
315 h_sig_sh0 L 5.2f - H ridge shape sigma (LCSB: B2SNR limit).
316 k_sh0 L 5.2f - K ridge shape (LCSB: BSNR limit).
317 k_sig_sh0 L 5.2f - K ridge shape sigma (LCSB: B2SNR limit).
318 j_sc_mxdn L 6.1f - J mxdn (score) (LCSB: BSNR - block/smoothed SNR).
319 j_sc_sh L 6.1f - J shape (score).
320 j_sc_wsh L 6.1f - J wsh (score) (LCSB: PSNR - peak raw SNR).
321 j_sc_r23 L 6.1f - J r23 (score) (LCSB: TSNR - integrated SNR for r=15).
322 j_sc_1mm L 6.1f - J 1st moment (score) (LCSB: super blk 2,4,8 SNR).
323 j_sc_2mm L 6.1f - J 2nd moment (score) (LCSB: SNRMAX - super SNR max).
324 j_sc_vint L 6.1f - J vint (score).
325 j_sc_r1 L 6.1f - J r1 (score).
326 j_sc_msh L 6.1f - J median shape score.
327 h_sc_mxdn L 6.1f - H mxdn (score) (LCSB: BSNR - block/smoothed SNR).
328 h_sc_sh L 6.1f - H shape (score).
329 h_sc_wsh L 6.1f - H wsh (score) (LCSB: PSNR - peak raw SNR).
330 h_sc_r23 L 6.1f - H r23 (score) (LCSB: TSNR - integrated SNR for r=15).
331 h_sc_1mm L 6.1f - H 1st moment (score) (LCSB: super blk 2,4,8 SNR).
332 h_sc_2mm L 6.1f - H 2nd moment (score) (LCSB: SNRMAX - super SNR max).
333 h_sc_vint L 6.1f - H vint (score).
334 h_sc_r1 L 6.1f - H r1 (score).
335 h_sc_msh L 6.1f - H median shape score.
336 k_sc_mxdn L 6.1f - K mxdn (score) (LCSB: BSNR - block/smoothed SNR).
337 k_sc_sh L 6.1f - K shape (score).
338 k_sc_wsh L 6.1f - K wsh (score) (LCSB: PSNR - peak raw SNR).
339 k_sc_r23 L 6.1f - K r23 (score) (LCSB: TSNR - integrated SNR for r=15).
340 k_sc_1mm L 6.1f - K 1st moment (score) (LCSB: super blk 2,4,8 SNR).
341 k_sc_2mm L 6.1f - K 2nd moment (score) (LCSB: SNRMAX - super SNR max).
342 k_sc_vint L 6.1f - K vint (score).
343 k_sc_r1 L 6.1f - K r1 (score).
344 k_sc_msh L 6.1f - K median shape score.
345 j_chif_ellf L 6.1f - J % chi-fraction for elliptical fit to 3-sig isophote.
346 k_chif_ellf L 6.1f - K % chi-fraction for elliptical fit to 3-sig isophote.
347 ellfit_flg L 1hd - ellipse fitting contamination flag.
348 sup_chif_ellf L 6.1f - super-coadd % chi-fraction for ellip. fit to 3-sig isophote.
--- Coadd background, brightness
349 n_blank L 4hd - number of blanked source records.
These parameters refer to sources that were blanked and/or subtracted from the images before doing photometry. Data for each of these blanked or subtracted sources are found in the blanked and subtracted source tables.
350 n_sub L 4hd - number of subtracted source records.
These parameters refer to sources that were blanked and/or subtracted from the images before doing photometry. Data for each of these blanked or subtracted sources are found in the blanked and subtracted source tables.
351 bl_sub_flg L 1hd - blanked/subtracted src description flag.
--- Other miscellaneous parameters
352 id_flg L 1hd - type/galaxy ID flag (0=non-catalog, 1=catalog, 2=LCSB).
This flag indicates the extended source catalog type as follows:
0 = extended source not found in another catalog
1 = extended source is found in galaxy catalog (ID found in id_cat field)
2 = LCSB (Low Central Surface Brightness) source
353 id_cat L 20s - matched galaxy's catalog name.
354 fg_flg L 6s - flux-growth convergence flag.
355 blk_fac L 1hd - LCSB blocking factor (1, 2, 4, 8).
356 dist_edge_ns L %5d arcsec The distance from the source to the nearest North or South scan edge. The scan edge is defined by the great-circle interpolation between the 3-band coverage corners. The equatorial coordinates of the 3-band coverage corners are given in the Scan Information Table, referenced by the scan_key. The first character of the dist_edge_flg indicates to which edge the source is closer.
357 dist_edge_ew L %3d arcsec The distance from the source to the nearest East or West scan edge. The scan edge is defined by the great-circle interpolation between the 3-band coverage corners. The equatorial coordinates of the 3-band coverage corners are given in the Scan Information Table, referenced by the scan_key. The second character of the dist_edge_flg indicates to which edge the source is closer.
358 dist_edge_flg L %2s - flag indicating which edges ([n|s][e|w]) are nearest to src.
359 cat S 1d - Catalog Flag. Single digit flag that indicates whether this extraction is part of the 2MASS 6x Extended Source Catalog (6x-XSC).

  • "1" - Extraction is part of the 6x-XSC.
  • "0" - Extraction is not part of the 6x-XSC.

Extractions that are not part of the 6x-XSC may be additional measurements of high reliability sources that are in the Catalog, single or double stars, low SNR sources that did not meet the SNR selection requirements for the Catalog, or low reliability extractions of image artifacts.

360 pts_key L 10d - key to 6x point source WDB record.
If the source has point source data (i.e. it is not an LCSB), this field will be set to the key of the record in the 6x point source table containing the point source data. The 6x point source data will also have the same date, hemisphere, scan, id keys.
361 mp_key L 5d - key to minor planet prediction DB record.
If a minor planet (asteroid) is predicted at this src's position, the field is set to the key of the record containing the minor planet prediction data (see the minor planet tbls). The minor planet data will also have the same date, hemisphere, scan, id keys.
362 scan_key S 6d - key to scan data record in "scan DB".
This field is set to the key of the record containing the corresponding scan data in the scan data table. The records will also have the same date, hemisphere, scan keys.
363 coadd_key L 7d - key to coadd data record in "scan DB".
This field is set to the key of the record containing the corresponding J, H, and K band coadd data in the coadd data table. The records will also have the same date, hemisphere, scan, coadd keys.
364 hemis L 1s - hemisphere (N/S) of observation. "n" = North/Mt. Hopkins; "s" = South/CTIO.
365 date L yyyy-mm-dd - The observation reference date for this source expressed in ISO standard format. This is the UT day value at sunrise for the night on which the source was observed. Because it is possible for the UT day to change during a night of observations, the actual UT date for a source measurement can differ from date by one day. Use the Julian Day value (jdate) for a more accurate determination of the observation time of the source.
366 scan L 3hd - scan number (unique within date).
367 coadd L 03hd - 3-digit coadd number (unique within scan).
368 id L 6d - source ID number (unique within scan, coadd).
369 x_coadd L 6.1f arcsec x (cross-scan) position (coadd coord.).
370 y_coadd L 6.1f arcsec y (in-scan) position (coadd coord.).
371 j_subst2 L 6.1f - J residual background #2 (score).
372 h_subst2 L 6.1f - H residual background #2 (score).
373 k_subst2 L 6.1f - K residual background #2 (score).
374 j_back L 6.1f - J coadd median background.
375 h_back L 6.1f - H coadd median background.
376 k_back L 6.1f - K coadd median background.
377 j_resid_ann L 7.3f DN J residual annulus background median.
378 h_resid_ann L 7.3f DN H residual annulus background median.
379 k_resid_ann L 7.3f DN K residual annulus background median.
380 j_bndg_per L 5d arcsec J banding Fourier Transf. period on this side of coadd.
381 j_bndg_amp L 6.3f DN J banding maximum FT amplitude on this side of coadd.
382 h_bndg_per L 5d arcsec H banding Fourier Transf. period on this side of coadd.
383 h_bndg_amp L 6.3f DN H banding maximum FT amplitude on this side of coadd.
384 k_bndg_per L 5d arcsec K banding Fourier Transf. period on this side of coadd.
385 k_bndg_amp L 6.3f DN K banding maximum FT amplitude on this side of coadd.
386 j_seetrack L 4.1f - J band seetracking score.
387 h_seetrack L 4.1f - H band seetracking score.
388 k_seetrack L 4.1f - K band seetracking score.
389 ext_key/cntr S 9d - entry counter (key) number (unique within table).


[Last Updated: 2007 January 8; by T. Jarrett and R. Cutri]


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