<=== observer ===>
"EBECKLIN",\
"Becklin, E.E.",\
"Department of Astronomy",\
"University of California at Los Angeles",\
"405 Hilgard Avenue",\
"",\
"90024",\
"Los Angeles",\
"U.S.A.",\
"1 310 2060208",\
"1 310 2062096",\
"becklin@bonnie.astro.ucla.edu"
<=== proposal ===>
"DEBRIS06",2,3,\
{"circumstellar discs"},\
{"Zuckerman, B.","Sargent, A.I.","Jura, M.","Goldreich, P."}
<=== title ===>
Dust Debris Around Solar Mass Stars
<=== abstract ===>
SCIENTIFIC ABSTRACT
With ISO, we propose to study the physical nature and evolutionary history
of dust debris clouds around solar mass stars. These clouds, discovered by
IRAS, are thought to be related to planetary systems. The program will consist
of: (i) A photometric study of selected A, F, G, and K-type main sequence
stars within 20 pc of the Sun. 100 stars have been selected with various
ages and multiplicity. (ii) A study of the evolutionary history of debris
clouds from observations of ~140 young open cluster stars and weak-line
T Tauri stars. (iii) Search for excess emission from ~20 known young main
sequence field stars beyond 20 pc. (iv) Search for possible dust disks around
degenerate stars. The investigation will clarify the relationship of the
debris clouds, specific properties of stars, and place the phenomenon in the
context of planetary formation.
OBSERVATION SUMMARY
We will investigate the excess emission from main sequence stars at 60
micron and 100 micron using C100 and P3 in ISOPHOT. For the cluster stars
we will use a sparse map and C100 (PHT37, PHT38, and PHT39). Each observation
consists of a single stare on the object and then a corresponding stare on
an adjacent sky, separated by 2 arcmin. For stability of the detectors,
all observations in a sequence will be done at one wavelength and then a
repeated reverse sequence at a second wavelength; The two sequences are
concatenated together. Integration times on each of the source and sky will be
160 sec at 60 micron and 96 sec at 100 micron. The required signal to noise
for these cluster stars is unknown, since the photosphere will not be seen
and the amount of excess depends on the unknown dust density.
For measurements of field stars and isolated cluster stars, either the
photometer P3 or array C100 will be used, depending on the cirrus noise.
If cirrus > 15 MJy/sr at 100 micron, C100 is used. In both cases a triangular
wave chopping will be used. The peak to peak motion of the chopper throw will
be 270 arcsec with the object in the center (the object will thus be 135
arcsec from each extreme position). Integration times on source will typically
be 192 sec at 60 micron and 64 sec at 100 micron. The 99 arcsec aperture
will be used for the P3 observations. We expect that the photosphere will be
detected for most stars stars with a S/N > 5.
Acquisition 180 sec
Initial instrument setup 15 sec
Stability of detector 90 sec
Filter change (2 Pos) 20 sec
FCS exposures (for 2 filters) 32 sec
Integration at 60 micron 384 sec
Integration at 100 micron 128 sec
Total time 849 sec
<=== scientific_justification ===>
Time distribution for autumn launch targets:
Team top 40% second 30% third 30%
USA : 13266 0 0
total : 13266 0 0
Time distribution for spring launch targets:
Team top 40% second 30% third 30%
USA : 10808 0 0
total : 10808 0 0
<=== autumn_launch_targets ===>
01,"PHT37",1.0,"N","AP_F_HE61 ",03.11389,+47.33889,1950,+0.000,+0.000,471,02
02,"PHT38",1.0,"N","Sky ",03.11389,+47.37222,1950,+0.000,+0.000,180,03
03,"PHT38",1.0,"N","AP_G_HE94 ",03.13000,+47.98861,1950,+0.000,+0.000,180,04
04,"PHT38",1.0,"N","Sky ",03.13000,+48.02194,1950,+0.000,+0.000,180,05
05,"PHT38",1.0,"N","AP_F_HE104 ",03.13694,+47.86639,1950,+0.000,+0.000,180,06
06,"PHT38",1.0,"N","Sky ",03.13694,+47.89972,1950,+0.000,+0.000,180,07
07,"PHT38",1.0,"N","AP_F_HE151 ",03.15389,+47.65167,1950,+0.000,+0.000,180,08
08,"PHT38",1.0,"N","Sky ",03.15389,+47.68500,1950,+0.000,+0.000,180,09
09,"PHT38",1.0,"N","AP_F_HE220 ",03.17972,+48.39222,1950,+0.000,+0.000,180,10
10,"PHT38",1.0,"N","Sky ",03.17972,+48.42555,1950,+0.000,+0.000,180,11
11,"PHT38",1.0,"N","Sky ",03.17972,+48.42555,1950,+0.000,+0.000,126,12
12,"PHT38",1.0,"N","AP_F_HE220 ",03.17972,+48.39222,1950,+0.000,+0.000,116,13
13,"PHT38",1.0,"N","Sky ",03.15389,+47.68500,1950,+0.000,+0.000,116,14
14,"PHT38",1.0,"N","AP_F_HE151 ",03.15389,+47.65167,1950,+0.000,+0.000,116,15
15,"PHT38",1.0,"N","Sky ",03.13694,+47.89972,1950,+0.000,+0.000,116,16
16,"PHT38",1.0,"N","AP_F_HE104 ",03.13694,+47.86639,1950,+0.000,+0.000,116,17
17,"PHT38",1.0,"N","Sky ",03.13000,+48.02194,1950,+0.000,+0.000,116,18
18,"PHT38",1.0,"N","AP_G_HE94 ",03.13000,+47.98861,1950,+0.000,+0.000,116,19
19,"PHT38",1.0,"N","Sky ",03.11389,+47.37222,1950,+0.000,+0.000,116,20
20,"PHT39",1.0,"N","AP_F_HE61 ",03.11389,+47.33889,1950,+0.000,+0.000,132,0
21,"PHT37",1.0,"N","AP_G_AP 14 ",03.34639,+48.61250,1950,+0.000,+0.000,471,22
22,"PHT38",1.0,"N","Sky ",03.34639,+48.64583,1950,+0.000,+0.000,180,23
23,"PHT38",1.0,"N","AP_F_HE621 ",03.35417,+48.23583,1950,+0.000,+0.000,180,24
24,"PHT38",1.0,"N","Sky ",03.35417,+48.26916,1950,+0.000,+0.000,180,25
25,"PHT38",1.0,"N","AP_A_HE635 ",03.35806,+49.62000,1950,+0.000,+0.000,180,26
26,"PHT38",1.0,"N","Sky ",03.35806,+49.65333,1950,+0.000,+0.000,180,27
27,"PHT38",1.0,"N","AP_F_HE684 ",03.37528,+48.62750,1950,+0.000,+0.000,180,28
28,"PHT38",1.0,"N","Sky ",03.37528,+48.66083,1950,+0.000,+0.000,180,29
29,"PHT38",1.0,"N","AP_F_HE715 ",03.38556,+48.60278,1950,+0.000,+0.000,180,30
30,"PHT38",1.0,"N","Sky ",03.38556,+48.63611,1950,+0.000,+0.000,180,31
31,"PHT38",1.0,"N","AP_F_HE727 ",03.38806,+48.61833,1950,+0.000,+0.000,180,32
32,"PHT38",1.0,"N","Sky ",03.38806,+48.65166,1950,+0.000,+0.000,180,33
33,"PHT38",1.0,"N","AP_F_HE733 ",03.39167,+48.61333,1950,+0.000,+0.000,180,34
34,"PHT38",1.0,"N","Sky ",03.39167,+48.64666,1950,+0.000,+0.000,180,35
35,"PHT38",1.0,"N","AP_G_HE767 ",03.40556,+49.58750,1950,+0.000,+0.000,180,36
36,"PHT38",1.0,"N","Sky ",03.40556,+49.62083,1950,+0.000,+0.000,180,37
37,"PHT38",1.0,"N","Sky ",03.40556,+49.62083,1950,+0.000,+0.000,126,38
38,"PHT38",1.0,"N","AP_G_HE767 ",03.40556,+49.58750,1950,+0.000,+0.000,116,39
39,"PHT38",1.0,"N","Sky ",03.39167,+48.64666,1950,+0.000,+0.000,116,40
40,"PHT38",1.0,"N","AP_F_HE733 ",03.39167,+48.61333,1950,+0.000,+0.000,116,41
41,"PHT38",1.0,"N","Sky ",03.38806,+48.65166,1950,+0.000,+0.000,116,42
42,"PHT38",1.0,"N","AP_F_HE727 ",03.38806,+48.61833,1950,+0.000,+0.000,116,43
43,"PHT38",1.0,"N","Sky ",03.38556,+48.63611,1950,+0.000,+0.000,116,44
44,"PHT38",1.0,"N","AP_F_HE715 ",03.38556,+48.60278,1950,+0.000,+0.000,116,45
45,"PHT38",1.0,"N","Sky ",03.37528,+48.66083,1950,+0.000,+0.000,116,46
46,"PHT38",1.0,"N","AP_F_HE684 ",03.37528,+48.62750,1950,+0.000,+0.000,116,47
47,"PHT38",1.0,"N","Sky ",03.35806,+49.65333,1950,+0.000,+0.000,116,48
48,"PHT38",1.0,"N","AP_A_HE635 ",03.35806,+49.62000,1950,+0.000,+0.000,116,49
49,"PHT38",1.0,"N","Sky ",03.35417,+48.26916,1950,+0.000,+0.000,116,50
50,"PHT39",1.0,"N","AP_F_HE621 ",03.35417,+48.23583,1950,+0.000,+0.000,132,0
51,"PHT37",1.0,"N","Sky ",03.34639,+48.64583,1950,+0.000,+0.000,397,52
52,"PHT39",1.0,"N","AP_G_AP 14 ",03.34639,+48.61250,1950,+0.000,+0.000,132,0
53,"PHT37",1.0,"N","AP_F_HE660 ",03.36722,+50.14667,1950,+0.000,+0.000,471,54
54,"PHT38",1.0,"N","Sky ",03.36722,+50.18000,1950,+0.000,+0.000,180,55
55,"PHT38",1.0,"N","AP_F_HE794 ",03.41611,+50.09472,1950,+0.000,+0.000,180,56
56,"PHT38",1.0,"N","Sky ",03.41611,+50.12805,1950,+0.000,+0.000,180,57
57,"PHT38",1.0,"N","AP_F_HE944 ",03.46917,+49.36750,1950,+0.000,+0.000,180,58
58,"PHT38",1.0,"N","Sky ",03.46917,+49.40083,1950,+0.000,+0.000,180,59
59,"PHT38",1.0,"N","AP_G_HE1101 ",03.52556,+49.57861,1950,+0.000,+0.000,180,60
60,"PHT38",1.0,"N","Sky ",03.52556,+49.61194,1950,+0.000,+0.000,180,61
61,"PHT38",1.0,"N","Sky ",03.52556,+49.61194,1950,+0.000,+0.000,126,62
62,"PHT38",1.0,"N","AP_G_HE1101 ",03.52556,+49.57861,1950,+0.000,+0.000,116,63
63,"PHT38",1.0,"N","Sky ",03.46917,+49.40083,1950,+0.000,+0.000,116,64
64,"PHT38",1.0,"N","AP_F_HE944 ",03.46917,+49.36750,1950,+0.000,+0.000,116,65
65,"PHT38",1.0,"N","Sky ",03.41611,+50.12805,1950,+0.000,+0.000,116,66
66,"PHT38",1.0,"N","AP_F_HE794 ",03.41611,+50.09472,1950,+0.000,+0.000,116,67
67,"PHT38",1.0,"N","Sky ",03.36722,+50.18000,1950,+0.000,+0.000,116,68
68,"PHT39",1.0,"N","AP_F_HE660 ",03.36722,+50.14667,1950,+0.000,+0.000,132,0
69,"PHT22",1.0,"N","AP_F_HE421 ",03.26944,+48.73306,1950,+0.000,+0.000,977,0
70,"PHT22",1.0,"N","AP_F_HE387 ",03.25250,+50.20472,1950,+0.000,+0.000,977,0
<=== spring_launch_targets ===>
01,"PHT37",1.0,"N","AP_F_HE61 ",03.11389,+47.33889,1950,+0.000,+0.000,471,2
02,"PHT38",1.0,"N","Sky ",03.11389,+47.37222,1950,+0.000,+0.000,180,3
03,"PHT38",1.0,"N","AP_G_HE94 ",03.13000,+47.98861,1950,+0.000,+0.000,180,4
04,"PHT38",1.0,"N","Sky ",03.13000,+48.02194,1950,+0.000,+0.000,180,5
05,"PHT38",1.0,"N","AP_F_HE104 ",03.13694,+47.86639,1950,+0.000,+0.000,180,6
06,"PHT38",1.0,"N","Sky ",03.13694,+47.89972,1950,+0.000,+0.000,180,7
07,"PHT38",1.0,"N","AP_F_HE151 ",03.15389,+47.65167,1950,+0.000,+0.000,180,8
08,"PHT38",1.0,"N","Sky ",03.15389,+47.68500,1950,+0.000,+0.000,180,9
09,"PHT38",1.0,"N","AP_F_HE220 ",03.17972,+48.39222,1950,+0.000,+0.000,180,10
10,"PHT38",1.0,"N","Sky ",03.17972,+48.42555,1950,+0.000,+0.000,180,11
11,"PHT38",1.0,"N","Sky ",03.17972,+48.42555,1950,+0.000,+0.000,126,12
12,"PHT38",1.0,"N","AP_F_HE220 ",03.17972,+48.39222,1950,+0.000,+0.000,116,13
13,"PHT38",1.0,"N","Sky ",03.15389,+47.68500,1950,+0.000,+0.000,116,14
14,"PHT38",1.0,"N","AP_F_HE151 ",03.15389,+47.65167,1950,+0.000,+0.000,116,15
15,"PHT38",1.0,"N","Sky ",03.13694,+47.89972,1950,+0.000,+0.000,116,16
16,"PHT38",1.0,"N","AP_F_HE104 ",03.13694,+47.86639,1950,+0.000,+0.000,116,17
17,"PHT38",1.0,"N","Sky ",03.13000,+48.02194,1950,+0.000,+0.000,116,18
18,"PHT38",1.0,"N","AP_G_HE94 ",03.13000,+47.98861,1950,+0.000,+0.000,116,19
19,"PHT38",1.0,"N","Sky ",03.11389,+47.37222,1950,+0.000,+0.000,116,20
20,"PHT39",1.0,"N","AP_F_HE61 ",03.11389,+47.33889,1950,+0.000,+0.000,132,0
21,"PHT37",1.0,"N","AP_G_AP 14 ",03.34639,+48.61250,1950,+0.000,+0.000,471,22
22,"PHT38",1.0,"N","Sky ",03.34639,+48.64583,1950,+0.000,+0.000,180,23
23,"PHT38",1.0,"N","AP_F_HE621 ",03.35417,+48.23583,1950,+0.000,+0.000,180,24
24,"PHT38",1.0,"N","Sky ",03.35417,+48.26916,1950,+0.000,+0.000,180,25
25,"PHT38",1.0,"N","AP_A_HE635 ",03.35806,+49.62000,1950,+0.000,+0.000,180,26
26,"PHT38",1.0,"N","Sky ",03.35806,+49.65333,1950,+0.000,+0.000,180,27
27,"PHT38",1.0,"N","AP_F_HE684 ",03.37528,+48.62750,1950,+0.000,+0.000,180,28
28,"PHT38",1.0,"N","Sky ",03.37528,+48.66083,1950,+0.000,+0.000,180,29
29,"PHT38",1.0,"N","AP_F_HE715 ",03.38556,+48.60278,1950,+0.000,+0.000,180,30
30,"PHT38",1.0,"N","Sky ",03.38556,+48.63611,1950,+0.000,+0.000,180,31
31,"PHT38",1.0,"N","AP_F_HE727 ",03.38806,+48.61833,1950,+0.000,+0.000,180,32
32,"PHT38",1.0,"N","Sky ",03.38806,+48.65166,1950,+0.000,+0.000,180,33
33,"PHT38",1.0,"N","AP_F_HE733 ",03.39167,+48.61333,1950,+0.000,+0.000,180,34
34,"PHT38",1.0,"N","Sky ",03.39167,+48.64666,1950,+0.000,+0.000,180,35
35,"PHT38",1.0,"N","Sky ",03.39167,+48.64666,1950,+0.000,+0.000,126,36
36,"PHT38",1.0,"N","AP_F_HE733 ",03.39167,+48.61333,1950,+0.000,+0.000,116,37
37,"PHT38",1.0,"N","Sky ",03.38806,+48.65166,1950,+0.000,+0.000,116,38
38,"PHT38",1.0,"N","AP_F_HE727 ",03.38806,+48.61833,1950,+0.000,+0.000,116,39
39,"PHT38",1.0,"N","Sky ",03.38556,+48.63611,1950,+0.000,+0.000,116,40
40,"PHT38",1.0,"N","AP_F_HE715 ",03.38556,+48.60278,1950,+0.000,+0.000,116,41
41,"PHT38",1.0,"N","Sky ",03.37528,+48.66083,1950,+0.000,+0.000,116,42
42,"PHT38",1.0,"N","AP_F_HE684 ",03.37528,+48.62750,1950,+0.000,+0.000,116,43
43,"PHT38",1.0,"N","Sky ",03.35806,+49.65333,1950,+0.000,+0.000,116,44
44,"PHT38",1.0,"N","AP_A_HE635 ",03.35806,+49.62000,1950,+0.000,+0.000,116,45
45,"PHT38",1.0,"N","Sky ",03.35417,+48.26916,1950,+0.000,+0.000,116,46
46,"PHT38",1.0,"N","AP_F_HE621 ",03.35417,+48.23583,1950,+0.000,+0.000,116,47
47,"PHT38",1.0,"N","Sky ",03.34639,+48.64583,1950,+0.000,+0.000,116,48
48,"PHT39",1.0,"N","AP_G_AP 14 ",03.34639,+48.61250,1950,+0.000,+0.000,132,0
49,"PHT37",1.0,"N","AP_F_HE794 ",03.41611,+50.09472,1950,+0.000,+0.000,471,50
50,"PHT38",1.0,"N","Sky ",03.41611,+50.12805,1950,+0.000,+0.000,180,51
51,"PHT38",1.0,"N","AP_F_HE944 ",03.46917,+49.36750,1950,+0.000,+0.000,180,52
52,"PHT38",1.0,"N","Sky ",03.46917,+49.40083,1950,+0.000,+0.000,180,53
53,"PHT38",1.0,"N","AP_G_HE1101 ",03.52556,+49.57861,1950,+0.000,+0.000,180,54
54,"PHT38",1.0,"N","Sky ",03.52556,+49.61194,1950,+0.000,+0.000,180,55
55,"PHT38",1.0,"N","Sky ",03.52556,+49.61194,1950,+0.000,+0.000,126,56
56,"PHT38",1.0,"N","AP_G_HE1101 ",03.52556,+49.57861,1950,+0.000,+0.000,116,57
57,"PHT38",1.0,"N","Sky ",03.46917,+49.40083,1950,+0.000,+0.000,116,58
58,"PHT38",1.0,"N","AP_F_HE944 ",03.46917,+49.36750,1950,+0.000,+0.000,116,59
59,"PHT38",1.0,"N","Sky ",03.41611,+50.12805,1950,+0.000,+0.000,116,60
60,"PHT39",1.0,"N","AP_F_HE794 ",03.41611,+50.09472,1950,+0.000,+0.000,132,0
61,"PHT22",1.0,"N","AP_F_HE421 ",03.26944,+48.73306,1950,+0.000,+0.000,977,0