10927( 7) - 06/11/07 08:41 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 10927 Version: 7 Check-in Time: 11-Jun-2007 12:41:31 STScI Edit Number: 2 Title The Weight-Watcher Program for Subdwarfs ------------------------------------------------------------------------------------ Type Cycle Parallel Pointing Tolerance GO 15 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Wei-Chun Jao Georgia State University Research Foundation CoI: Dr. Todd J. Henry Georgia State University Research N Foundation CoI: Dr. Otto G. Franz Lowell Observatory N CoI: Dr. Lawrence H. Wasserman Lowell Observatory N CoI: Dr. Edmund Nelan Space Telescope Science Institute N ------------------------------------------------------------------------------------ Abstract We propose to use HST/FGS1r to measure five subdwarf spectroscopic binaries to determine masses for the components. Their metallicities, [Fe/H], range from -0.5 to -2.5, and their projected minimum separations range from 9 to 24 mas. These binaries are resolvable with HST/FGS1r but not any ground-based technique. Currently, there are only two subdwarf systems having any mass measurements. The proposed work will boost the total number of subdwarf systems with masses from two to seven, and allow us to construct the first mass-luminosity relation for low-metallicity stars. ------------------------------------------------------------------------------------ 10927( 7) - 06/11/07 08:41 - [ 2] Observations Description ------------------------ We will use FGS1r to observe the targets in TRANSFER mode in an attempt to resolve the spectroscopic binaries. The observations will be made at a time that corresponds to maxium elongation (or projected separation). This measurement will be used to establish the angular extent of each binary's semi- major axis. which will yield the orbital inclination, and when combined with the spectroscopic data, the mass of each star. Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 10927( 7) - 06/11/07 08:41 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 2 G006-026B STAR, POPULATION II RA=03H39M34.9300S +/- 0.1", J2000 V = 12.71+/-0.2 DEC=+18D18'51.60" +/- 0.1" B-V=1.56 Reference Frame: ICRS Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000.0 0.0137 -0.193 0.0 3 G099-048 STAR, POPULATION II RA=05H59M5.9900S +/- 0.1", J2000 V = 11.89+/-0.2 DEC=+04D10'38.70" +/- 0.1" B-V=0.70 Reference Frame: ICRS Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000.0 0.0179 -0.232 0.0 4 G061-024 STAR, POPULATION II RA=12H57M31.9600S +/- 0.1", J2000 V = 8.97+/-0.1 DEC=+18D41'36.40" +/- 0.1" B-V=0.67 Reference Frame: ICRS Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000.0 -0.0156 0.111 0.0 5 G166-045 STAR, POPULATION II RA=14H49M2.3600S +/- 0.1", J2000 V = 9.73+/-0.2 DEC=+25D42'9.20" +/- 0.1" B-V=0.44 Reference Frame: ICRS Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000.0 -0.000600000 -0.345 0.0 6 G182-041 STAR, POPULATION II RA=18H09M26.5500S +/- 0.1", J2000 V = 12.65+/-0.2 DEC=+27D55'23.30" +/- 0.1" B-V=0.93 Reference Frame: ICRS Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000.0 -0.0162 -0.148 0.0 10927( 7) - 06/11/07 08:41 - [ 4] Visit: 01 Visit Priority: Visit Requirements: BETWEEN 20-JUL-2006:00:00:00 AND 15-AUG-2006:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 G006-026B FGS TRANS 1 F583W SCANS=5,STEP-SIZE=1 1 375 S SEQ 1-2 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 2 G006-026B FGS TRANS 1 F583W SCANS=32,STEP-SIZE=0.3 1 1370 S SAME POS AS 1 ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ G006-026B 1 FGS TRANS 1 F583W none none none none 1 N/A G006-026B 2 FGS TRANS 1 F583W none none none none 1 N/A 10927( 7) - 06/11/07 08:41 - [ 5] Visit: 02 Visit Priority: Visit Requirements: BETWEEN 11-JUN-2007:00:00:00 AND 30-JUN-2007:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 G061-024 FGS TRANS 1 F583W SCANS=5,STEP-SIZE=1 1 375 S SEQ 1-2 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 2 G061-024 FGS TRANS 1 F583W SCANS=32,STEP-SIZE=0.3 1 1370 S SAME POS AS 1 ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ G061-024 1 FGS TRANS 1 F583W none none none none 1 N/A G061-024 2 FGS TRANS 1 F583W none none none none 1 N/A 10927( 7) - 06/11/07 08:41 - [ 6] Visit: 03 Visit Priority: Visit Requirements: BETWEEN 09-JUN-2007:00:00:00 AND 22-JUN-2007:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 G166-045 FGS TRANS 1 F583W SCANS=5,STEP-SIZE=1 1 375 S GS ACQ SCENARIO ONEB1T; SEQ 1-2 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 2 G166-045 FGS TRANS 1 F583W SCANS=32,STEP-SIZE=0.3 1 1370 S SAME POS AS 1 ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ G166-045 1 FGS TRANS 1 F583W none none none none 1 N/A G166-045 2 FGS TRANS 1 F583W none none none none 1 N/A 10927( 7) - 06/11/07 08:41 - [ 7] Visit: 41 Visit Priority: Visit Requirements: BETWEEN 01-FEB-2007:00:00:00 AND 15-FEB-2007:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 G182-041 FGS TRANS 1 F583W SCANS=5,STEP-SIZE=1 1 375 S SEQ 1-2 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 2 G182-041 FGS TRANS 1 F583W SCANS=32,STEP-SIZE=0.3 1 1370 S SAME POS AS 1 ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ G182-041 1 FGS TRANS 1 F583W none none none none 1 N/A G182-041 2 FGS TRANS 1 F583W none none none none 1 N/A 10927( 7) - 06/11/07 08:41 - [ 8] Visit: 42 Visit Priority: Visit Requirements: BETWEEN 15-MAR-2007:00:00:00 AND 30-MAR-2007:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 G182-041 FGS TRANS 1 F583W SCANS=5,STEP-SIZE=1 1 375 S SEQ 1-2 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 2 G182-041 FGS TRANS 1 F583W SCANS=32,STEP-SIZE=0.3 1 1370 S SAME POS AS 1 ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ G182-041 1 FGS TRANS 1 F583W none none none none 1 N/A G182-041 2 FGS TRANS 1 F583W none none none none 1 N/A 10927( 7) - 06/11/07 08:41 - [ 9] Visit: 51 Visit Priority: Visit Requirements: BETWEEN 07-NOV-2006:00:00:00 AND 21-NOV-2006:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 G099-048 FGS TRANS 1 F583W SCANS=5,STEP-SIZE=1 1 350 S SEQ 1-2 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 2 G099-048 FGS TRANS 1 F583W SCANS=32,STEP-SIZE=0.3 1 1370 S SAME POS AS 1 ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ G099-048 1 FGS TRANS 1 F583W none none none none 1 N/A G099-048 2 FGS TRANS 1 F583W none none none none 1 N/A 10927( 7) - 06/11/07 08:41 - [ 10] Visit: 52 Visit Priority: Visit Requirements: ORIENT 28.0D TO 32.0D FROM 51; BETWEEN 07-NOV-2006:00:00:00 AND 21-NOV- 2006:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 G099-048 FGS TRANS 1 F583W SCANS=5,STEP-SIZE=1 1 350 S SEQ 1-2 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 2 G099-048 FGS TRANS 1 F583W SCANS=32,STEP-SIZE=0.3 1 1370 S SAME POS AS 1 ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ G099-048 1 FGS TRANS 1 F583W none none none none 1 N/A G099-048 2 FGS TRANS 1 F583W none none none none 1 N/A 10927( 7) - 06/11/07 08:41 - [ 11] Visit: 53 Visit Priority: Visit Requirements: BETWEEN 09-JUN-2007:00:00:00 AND 29-JUN-2007:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 G166-045 FGS TRANS 1 F583W SCANS=5,STEP-SIZE=1 1 375 S GSPAIR N68I000269F20000000000F0; GS ACQ SCENARIO ONEB1T; SEQ 1-2 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 2 G166-045 FGS TRANS 1 F583W SCANS=32,STEP-SIZE=0.3 1 1370 S SAME POS AS 1 ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ G166-045 1 FGS TRANS 1 F583W none none none none 1 N/A G166-045 2 FGS TRANS 1 F583W none none none none 1 N/A 10927( 7) - 06/11/07 08:41 - [ 12] Summary Form for Proposal 10927 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures 1 ------------------------------------------------------------------------------------------------------------------------------------ Configurations FGS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes TRANS ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters SCANS=5 STEP-SIZE=1 SCANS=32 STEP-SIZE=0.3 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements BETWEEN 20-JUL-2006 00 00 00 AND 15-AUG-2006 00 00 00; SEQ 1-2 NON-INT; SAME POS AS 1; BETWEEN 11-JUN-2007 00 00 00 AND 30-JUN-2007 00 00 00; BETWEEN 09-JUN-2007 00 00 00 AND 22-JUN-2007 00 00 00; GS ACQ SCENARIO ONEB1T; BETWEEN 01-FEB-2007 00 00 00 AND 15-FEB-2007 00 00 00; BETWEEN 15-MAR-2007 00 00 00 AND 30-MAR-2007 00 00 00; BETWEEN 07-NOV-2006 00 00 00 AND 21-NOV-2006 00 00 00; ORIENT 28.0D TO 32.0D FROM 51; BETWEEN 07-NOV-2006 00 00 00 AND 21-NOV-2006 00 00 00; BETWEEN 09-JUN-2007 00 00 00 AND 29-JUN-2007 00 00 00; GSPAIR N68I000269F20000000000F0; ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F583W ------------------------------------------------------------------------------------------------------------------------------------ Target Names G006-026B G061-024 G166-045 G182-041 G099-048 ------------------------------------------------------------------------------------------------------------------------------------