<=== observer ===>
"CLEINERT",\
"Leinert, Ch.",\
"",\
"Max-Planck-Institut f\"ur Astronomie",\
"Konigstuhl 17",\
"",\
"D-69117",\
"Heidelberg",\
"Germany",\
"49 6221 528264",\
"49 6221 528246",\
"leinert@mpia-hd.mpg.de"
<=== proposal ===>
"HERBIGAE",1,3,\
{"circumstellar envelopes","young stellar objects"},\
{"Mundt,R.", "Henning,Th.", "Chini,R.", "Lemke,D."}
<=== title ===>
Herbig Ae/Be stars and the evolution of their circumstellar material
<=== abstract ===>
SCIENTIFIC ABSTRACT
Many of the Herbig Ae/Be stars, i.e. young stars of intermediate mass(2-10 Msun)
appear to be surrounded by disks of circumstellar matter, similarly as known
for the lower mass T Tauri stars. Intermediate mass stars have not been
studied as extensively as T Tauri stars, however it appears (Strom et al.1991)
that their disks are by about a factor of 10 more massive, more extended and
evolve more rapidly than inferred for the lower mass stars. This proposal
is to provide a systematic study of the circumstellar matter of Herbig Ae/Be
stars - whatever its geometrical distribution - and of its evolution with time
by means of multiband photometry. The sample contains Herbig Ae/Be stars
in three groups of different association with circumstellar material,
corresponding largely to the groups II, I and III, as introduced by
L.Hillenbrand (1992), as well as A and B main sequence stars from three
age groups of young nearby clusters or stellar groups, with ages of 10-20,
30-40 and about 160 million years. The study of this sample will allow us
to follow the temporal evolution of the amount of circumstellar matter and
its spatial distribution around these intermediate mass stars.
OBSERVATION SUMMARY
Out of the comprehensive sample described above we will observe during
guaranteed time 15 optical Herbig Ae/Be stars (mostly group I but some
also group II or group III in Hillenbrands classification) and 10 objects
from the oldest of our subgroups (Ursae Majoris), containing approximately
equal numbers of fast and slow rotators.
PERFORMANCE TIME OVERVIEW
Observations priority 1 priority 2 priority 3 sum
------------------------------------------------------------------
broadband photometry 15902 s 3830 s --- 15902 s
------------------------------------------------------------------
(4.4 h) (1.1 h) --- (5.5 h)
=== Detailed observing plan ===
As a rule the photometry will be performed by triangular chopping
against the surrounding background, but for the measurements at
160 micron and 200 micron instead a thrre-point raster scan
will be used. For LkHa 198 and V376 Cas, which are
close to each other, a small raster map of 4-8 positions
will be performed. Diaphragm sizes between 23 arcsec and 99 arcsec will
be used. There are no restrictions to the actual position angle
of the chopping directions.
For sources well detected by IRAS the emphasis is on a good
determination of the long wavelength spectrum, in particular
beyond 100 micron. For the other sources the aim is to detect far-infrared
emission and to follow it to long wavelengths as far as possible. The
measurements at shorter wavelengths help to define the photospheric
component.
With the given integration times the flux limit for the faint sources of
the sample (about 0.3 Jy) is 10-30 mJy in the absence of cirrus (S/N about 10).
Cirrus confusion is about 100 mJy at a wavelength 100 micron for a cirrus
brightness of 15 MJy/sr. This value is applicable to the IRAS sources,
most of which have far infrared brightnesses of at least several Jy, giving
a S/N of at least 10. For the bright stars lower 100 micron
background (5 MJy/sr) and lower cirrus noise (15 mJy) are to be
expected, allowing a S/N ratio of 10 or more for the brightest
sources and detection of even moderate infrared excess also for
the faint ones.
1. IRAS sources photometry
Filter t(on object) t(performance) diaphragm(") chop throw(")
------------------------------------------------------------------------
P_4.85 16 s 68 s 23 90
P_11.5 16 s 64 s 23 90
P_25 16 s 66 s 52 90
P_60 16 s 154 s 99 120
P_100 16 s 80 s 99 120
C_160 16 s 70 s --- raster scan ---
C_200 16 s 66 s --- raster scan ---
Acquisition 180 s
-------------------------------------------------------------------------
Performance time 766 s (0.21 h)
2. Bright stars photometry
Filter t(on object) t(performance) diaphragm(") chop throw(")
-----------------------------------------------------------------------
P_3.6 16 s 60 s 23 90
P_4.85 16 s 60 s 23 90
P_7.3 16 s 58 s 23 90
P_11.5 16 s 62 s 23 90
P_25 16 s 58 s 52 90
P_60 16 s 146 s 99 120
P_100 16 s 60 s 99 120
C_160 16 s 95 s --- raster scan ---
Acquisition 180 s
-----------------------------------------------------------------------
Performance time 779 s
<=== scientific_justification ===>
===== spring launch =====
Team top 40% middle 30% remaining 30% total performance time
---------------------------------------------------------------------
PHOT 15902 s 3830 s --- 19732 s
---------------------------------------------------------------------
(4.4 h) (1.1 h) (5.5 h)
81 % 19 %
===== autumn launch =====
Team top 40% middle 30% remaining 30% total performance time
---------------------------------------------------------------------
PHOT 15902 s 3830 s --- 19732 s
---------------------------------------------------------------------
(4.4 h) (1.1 h) (5.5 h)
81 % 19 %
======= object list =============
object remark observation priority
-----------------------------------------------------------------
age LkHa 198 raster map 1
group V376 Cas raster map 1
2 VV Ser autumn launch IRAS source 1
HR 5999 autumn launch IRAS source 1
Par 21 autumnlaunch IRAS source 1
AB Aur spring launch IRAS source 1
HK Ori spring launch IRAS source 1
Z CMa spring launch IRAS source 1
BD +40 4124 IRAS source 1
LkHa 233 IRAS source 1
LkHa 234 IRAS source 1
PV Cep IRAS source 1
BD +61 154 IRAS source 1
BD +41 3731 IRAS source 2
BD +65 1637 IRAS source 2
HD 37490 spring launch IRAS source 2
V380 Ori spring launch IRAS source 2
V350 Ori spring launch IRAS source 2
LkHa 259 autumn launch IRAS source 2
MWC 1080 autumn launch IRAS source 2
LkHa 349 autumn launch IRAS source 2
----------------------------------------------------------------
age BS 4295 bright star 1
group BS 4554 bright star 1
6 BS 4660 bright star 1
BS 4905 bright star 1
BS 5062 bright star 1
BS 875 bright star 1
BS 906 autumn launch bright star 1
BS 2585 spring launch bright star 1
BS 8291 bright star 1
BS 8410 bright star 1
BS 8473 bright star 1
--------------------------------------------------------------
<=== autumn_launch_targets ===>
1, "PHT03", 1.0, "N", "LkHa 198 + V376 Cas ", 0.14644, 58.53861, 1950, 0.000, 0.000, 720, 2
2, "PHT03", 1.0, "N", "LkHa 198 + V376 Cas ", 0.14644, 58.53861, 1950, 0.000, 0.000, 418, 3
3, "PHT22", 1.0, "N", "LkHa 198 + V376 Cas ", 0.14644, 58.52194, 1950, 0.000, 0.000, 338, 4
4, "PHT22", 1.0, "N", "LkHa 198 + V376 Cas ", 0.14644, 58.49694, 1950, 0.000, 0.000, 508, 0
5, "PHT03", 1.0, "N", "VV Ser ", 18.43731, 0.11111, 1950, 0.000, 0.000, 630, 6
6, "PHT22", 1.0, "N", "VV Ser ", 18.43731, 0.11111, 1950, 0.000, 0.000, 136, 0
7, "PHT03", 1.0, "N", "HR 5999 ", 16.08689, -38.97306, 1950, 0.000, 0.000, 630, 8
8, "PHT22", 1.0, "N", "HR 5999 ", 16.08689, -38.97306, 1950, 0.000, 0.000, 136, 0
9, "PHT03", 1.0, "N", "Par 21 ", 19.44375, 9.54111, 1950, 0.000, 0.000, 630, 10
10, "PHT22", 1.0, "N", "Par 21 ", 19.44375, 9.54111, 1950, 0.000, 0.000, 136, 0
11, "PHT03", 1.0, "N", "BD +40 4124 ", 20.31186, 41.20500, 1950, 0.000, 0.000, 630, 12
12, "PHT22", 1.0, "N", "BD +40 4124 ", 20.31186, 41.20500, 1950, 0.000, 0.000, 136, 0
13, "PHT03", 1.0, "N", "LkHa 233 ", 22.54119, 40.40889, 1950, 0.000, 0.000, 630, 14
14, "PHT22", 1.0, "N", "LkHa 233 ", 22.54119, 40.40889, 1950, 0.000, 0.000, 136, 0
15, "PHT03", 1.0, "N", "LkHa 234 ", 21.69933, 65.88528, 1950, 0.000, 0.000, 630, 16
16, "PHT22", 1.0, "N", "LkHa 234 ", 21.69933, 65.88528, 1950, 0.000, 0.000, 136, 0
17, "PHT03", 1.0, "N", "PV Cep ", 20.75653, 67.77611, 1950, 0.000, 0.000, 630, 18
18, "PHT22", 1.0, "N", "PV Cep ", 20.75653, 67.77611, 1950, 0.000, 0.000, 136, 0
19, "PHT03", 1.0, "N", "BD +61 154 ", 0.67275, 61.63750, 1950, 0.000, 0.000, 630, 20
20, "PHT22", 1.0, "N", "BD +61 154 ", 0.67275, 61.63750, 1950, 0.000, 0.000, 136, 0
21, "PHT03", 1.0, "N", "BS 4295 ", 10.98064, 56.65083, 1950, 0.000, 0.000, 684, 22
22, "PHT22", 1.0, "N", "BS 4295 ", 10.98064, 56.65083, 1950, 0.000, 0.000, 95, 0
23, "PHT03", 1.0, "N", "BS 4554 ", 11.85350, 53.97278, 1950, 0.000, 0.000, 684, 24
24, "PHT22", 1.0, "N", "BS 4554 ", 11.85350, 53.97278, 1950, 0.000, 0.000, 95, 0
25, "PHT03", 1.0, "N", "BS 4660 ", 12.21600, 57.31028, 1950, 0.000, 0.000, 684, 26
26, "PHT22", 1.0, "N", "BS 4660 ", 12.21600, 57.31028, 1950, 0.000, 0.000, 95, 0
27, "PHT03", 1.0, "N", "BS 4905 ", 12.86392, 56.23083, 1950, 0.000, 0.000, 684, 28
28, "PHT22", 1.0, "N", "BS 4905 ", 12.86392, 56.23083, 1950, 0.000, 0.000, 95, 0
29, "PHT03", 1.0, "N", "BS 5062 ", 13.38708, 55.24806, 1950, 0.000, 0.000, 684, 30
30, "PHT22", 1.0, "N", "BS 5062 ", 13.38708, 55.24806, 1950, 0.000, 0.000, 95, 0
31, "PHT03", 1.0, "N", "BS 875 ", 2.90192, -3.91250, 1950, 0.000, 0.000, 684, 32
32, "PHT22", 1.0, "N", "BS 875 ", 2.90192, -3.91250, 1950, 0.000, 0.000, 95, 0
33, "PHT03", 1.0, "N", "BS 906 ", 3.19508, 81.47083, 2000, 0.000, 0.000, 684, 34
34, "PHT22", 1.0, "N", "BS 906 ", 3.19508, 81.47083, 2000, 0.000, 0.000, 95, 0
35, "PHT03", 1.0, "N", "BS 8291 ", 21.65928, 40.57750, 1950, 0.000, 0.000, 684, 36
36, "PHT22", 1.0, "N", "BS 8291 ", 21.65928, 40.57750, 1950, 0.000, 0.000, 95, 0
37, "PHT03", 1.0, "N", "BS 8410 ", 22.03697, -1.14917, 1950, 0.000, 0.000, 684, 38
38, "PHT22", 1.0, "N", "BS 8410 ", 22.03697, -1.14917, 1950, 0.000, 0.000, 95, 0
39, "PHT03", 1.0, "N", "BS 8473 ", 22.15464, 71.86472, 1950, 0.000, 0.000, 684, 40
40, "PHT22", 1.0, "N", "BS 8473 ", 22.15464, 71.86472, 1950, 0.000, 0.000, 95, 0
41, "PHT03", 2.0, "N", "BD +41 3731 ", 20.37547, 42.13333, 1950, 0.000, 0.000, 684, 42
42, "PHT22", 2.0, "N", "BD +41 3731 ", 20.37547, 42.13333, 1950, 0.000, 0.000, 95, 0
43, "PHT03", 2.0, "N", "BD +65 1637 ", 21.69475, 65.88028, 1950, 0.000, 0.000, 684, 44
44, "PHT22", 2.0, "N", "BD +65 1637 ", 21.69475, 65.88028, 1950, 0.000, 0.000, 95, 0
45, "PHT03", 2.0, "N", "LkHa 259 ", 23.93597, 66.15861, 1950, 0.000, 0.000, 684, 46
46, "PHT22", 2.0, "N", "LkHa 259 ", 23.94597, 66.15861, 1950, 0.000, 0.000, 95, 0
47, "PHT03", 2.0, "N", "MWC 1080 ", 23.25398, 60.57233, 1950, 0.000, 0.000, 684, 48
48, "PHT22", 2.0, "N", "MWC 1080 ", 23.25398, 60.57233, 1950, 0.000, 0.000, 95, 0
49, "PHT03", 2.0, "N", "LkHa 349 ", 21.58842, 57.29442, 1950, 0.000, 0.000, 684, 50
50, "PHT22", 2.0, "N", "LkHa 349 ", 21.58842, 57.29442, 1950, 0.000, 0.000, 95, 0
<=== spring_launch_targets ===>
1, "PHT03", 1.0, "N", "LkHa 198 + V376 Cas ", 0.14644, 58.53861, 1950, 0.000, 0.000, 720, 2
2, "PHT03", 1.0, "N", "LkHa 198 + V376 Cas ", 0.14644, 58.53861, 1950, 0.000, 0.000, 418, 3
3, "PHT22", 1.0, "N", "LkHa 198 + V376 Cas ", 0.14644, 58.52194, 1950, 0.000, 0.000, 338, 4
4, "PHT22", 1.0, "N", "LkHa 198 + V376 Cas ", 0.14644, 58.49694, 1950, 0.000, 0.000, 508, 0
5, "PHT03", 1.0, "N", "AB Aur ", 4.87617, 30.47278, 1950, 0.000, 0.000, 630, 6
6, "PHT22", 1.0, "N", "AB Aur ", 4.87617, 30.47278, 1950, 0.000, 0.000, 136, 0
7, "PHT03", 1.0, "N", "HK Ori ", 5.47781, 12.11667, 1950, 0.000, 0.000, 630, 8
8, "PHT22", 1.0, "N", "HK Ori ", 5.47781, 12.11667, 1950, 0.000, 0.000, 136, 0
9, "PHT03", 1.0, "N", "Z CMa ", 7.02292, -11.47667, 1950, 0.000, 0.000, 630, 10
10, "PHT22", 1.0, "N", "Z CMa ", 7.02292, -11.47667, 1950, 0.000, 0.000, 136, 0
11, "PHT03", 1.0, "N", "BD +40 4124 ", 20.31186, 41.20500, 1950, 0.000, 0.000, 630, 12
12, "PHT22", 1.0, "N", "BD +40 4124 ", 20.31186, 41.20500, 1950, 0.000, 0.000, 136, 0
13, "PHT03", 1.0, "N", "LkHa 233 ", 22.54119, 40.40889, 1950, 0.000, 0.000, 630, 14
14, "PHT22", 1.0, "N", "LkHa 233 ", 22.54119, 40.40889, 1950, 0.000, 0.000, 136, 0
15, "PHT03", 1.0, "N", "LkHa 234 ", 21.69933, 65.88528, 1950, 0.000, 0.000, 630, 16
16, "PHT22", 1.0, "N", "LkHa 234 ", 21.69933, 65.88528, 1950, 0.000, 0.000, 136, 0
17, "PHT03", 1.0, "N", "PV Cep ", 20.75653, 67.77611, 1950, 0.000, 0.000, 630, 18
18, "PHT22", 1.0, "N", "PV Cep ", 20.75653, 67.77611, 1950, 0.000, 0.000, 136, 0
19, "PHT03", 1.0, "N", "BD +61 154 ", 0.67275, 61.63750, 1950, 0.000, 0.000, 630, 20
20, "PHT22", 1.0, "N", "BD +61 154 ", 0.67275, 61.63750, 1950, 0.000, 0.000, 136, 0
21, "PHT03", 1.0, "N", "BS 4295 ", 10.98064, 56.65083, 1950, 0.000, 0.000, 684, 22
22, "PHT22", 1.0, "N", "BS 4295 ", 10.98064, 56.65083, 1950, 0.000, 0.000, 95, 0
23, "PHT03", 1.0, "N", "BS 4554 ", 11.85350, 53.97278, 1950, 0.000, 0.000, 684, 24
24, "PHT22", 1.0, "N", "BS 4554 ", 11.85350, 53.97278, 1950, 0.000, 0.000, 95, 0
25, "PHT03", 1.0, "N", "BS 4660 ", 12.21600, 57.31028, 1950, 0.000, 0.000, 684, 26
26, "PHT22", 1.0, "N", "BS 4660 ", 12.21600, 57.31028, 1950, 0.000, 0.000, 95, 0
27, "PHT03", 1.0, "N", "BS 4905 ", 12.86392, 56.23083, 1950, 0.000, 0.000, 684, 28
28, "PHT22", 1.0, "N", "BS 4905 ", 12.86392, 56.23083, 1950, 0.000, 0.000, 95, 0
29, "PHT03", 1.0, "N", "BS 5062 ", 13.38708, 55.24806, 1950, 0.000, 0.000, 684, 30
30, "PHT22", 1.0, "N", "BS 5062 ", 13.38708, 55.24806, 1950, 0.000, 0.000, 95, 0
31, "PHT03", 1.0, "N", "BS 875 ", 2.90192, -3.91250, 1950, 0.000, 0.000, 684, 32
32, "PHT22", 1.0, "N", "BS 875 ", 2.90192, -3.91250, 1950, 0.000, 0.000, 95, 0
33, "PHT03", 1.0, "N", "BS 2585 ", 6.89953, 45.16139, 1950, 0.000, 0.000, 684, 34
34, "PHT22", 1.0, "N", "BS 2585 ", 6.89953, 45.16139, 1950, 0.000, 0.000, 95, 0
35, "PHT03", 1.0, "N", "BS 8291 ", 21.65928, 40.57750, 1950, 0.000, 0.000, 684, 36
36, "PHT22", 1.0, "N", "BS 8291 ", 21.65928, 40.57750, 1950, 0.000, 0.000, 95, 0
37, "PHT03", 1.0, "N", "BS 8410 ", 22.03697, -1.14917, 1950, 0.000, 0.000, 684, 38
38, "PHT22", 1.0, "N", "BS 8410 ", 22.03697, -1.14917, 1950, 0.000, 0.000, 95, 0
39, "PHT03", 1.0, "N", "BS 8473 ", 22.15464, 71.86472, 1950, 0.000, 0.000, 684, 40
40, "PHT22", 1.0, "N", "BS 8473 ", 22.15464, 71.86472, 1950, 0.000, 0.000, 95, 0
41, "PHT03", 1.0, "N", "BD +41 3731 ", 20.37547, 42.13333, 1950, 0.000, 0.000, 684, 42
42, "PHT22", 1.0, "N", "BD +41 3731 ", 20.37547, 42.13333, 1950, 0.000, 0.000, 95, 0
43, "PHT03", 1.0, "N", "BD +65 1637 ", 21.69475, 65.88028, 1950, 0.000, 0.000, 684, 44
44, "PHT22", 1.0, "N", "BD +65 1637 ", 21.69475, 65.88028, 1950, 0.000, 0.000, 95, 0
45, "PHT03", 2.0, "N", "HD 37490 ", 05.60903, 4.09389, 1950, 0.000, 0.000, 684, 46
46, "PHT22", 2.0, "N", "HD 37490 ", 05.60903, 4.09389, 1950, 0.000, 0.000, 95, 0
47, "PHT03", 2.0, "N", "V380 Ori ", 05.56653, -06.74611, 1950, 0.000, 0.000, 684, 48
48, "PHT22", 2.0, "N", "V380 Ori ", 05.56653, -06.74611, 1950, 0.000, 0.000, 95, 0
49, "PHT03", 2.0, "N", "V350 Ori ", 05.63036, -09.72833, 1950, 0.000, 0.000, 684, 50
50, "PHT22", 2.0, "N", "V350 Ori ", 05.63036, -09.72833, 1950, 0.000, 0.000, 95, 0