6345( 3) - 12/08/95 10:18 - [ 1] PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID: 6345 Version: 3 Check-in Date: ********** 1.Proposal Title: Determining the Binary Frequency for Ultra-cool, Nearby M Dwarfs ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Cycle CS GO 6 ------------------------------------------------------------------------------------ 5. Investigators Contact? PI: Dr. J. Davy Kirkpatrick Jet Propulsion Lab/Infrared Processing and Analysis Center CoI: Dr. Todd J. Henry Space Telescope Science Institute N ------------------------------------------------------------------------------------ 6. Abstract The binary frequency for late-M dwarfs is unknown because a survey for companions to these low luminosity objects is difficult due to ground-based limitations. This knowledge has a direct influence on our understanding of star formation processes and on our interpretation of the faint end of the stellar luminosity function. We propose a search around 11 very late M dwarfs (spectral types of M8 V or cooler) to look for stellar and substellar companions at separations from ~2 to 1000 AU (~0.2 to 100 arcsec). Because our targets are within ~10 pc, possible companions will (1) be easily verified because they must share common proper motion with the primaries and (2) be easily characterized since their distance is known a priori from the trigonometric parallax of the primary. Based on the observed multiplicity of early- to mid-M dwarfs, these HST observations are expected to discover three to four new, extremely low-luminosity members of the solar neighborhood. ------------------------------------------------------------------------------------ 6345( 3) - 12/08/95 10:18 - [ 2] Observations Description ------------------------ Each target will be observed once in Cycle 6 (epoch 1) and once in Cycle 7 (epoch 2). Each target will have three integrations per epoch: a short, an intermediate, and a long F814W exposure. This filter is chosen because it is the reddest of the ``wide'' filters and will provide the deepest images. This sequence of exposures will give 13 magnitudes of dynamic range. Each visit will require one orbit per epoch. The target objects will thus require 11 orbits in Cycle 6 and 11 in Cycle 7. These will be centered in the field of the PC. The baseline between the two sets should be as close to 12 months as possible to assure that (1) the field falling within the bounds of the WFC is the same in both observation sets, and that (2) we are viewing the target near the same point in its parallactic ellipse (i.e., to assure that there is a yearly displacement relative to the background for those objects whose yearly proper motion is comparable in size to the trigonometric parallax). Real Time Justification ----------------------- None. Calibration Justification ------------------------- None. Additional Comments ------------------- None. ------------------------------------------------------------------------------------ Data Distribution Media: 8MM Blocking Factor: 10 Ship To: PI_Address Ship Via: UPS Email: , ------------------------------------------------------------------------------------ 6345( 3) - 12/08/95 10:18 - [ 3] TARGET LIST a) Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 BRI0021-0214 STAR, M V-IV RA=00H 21M 51.1S +/- 0.1S, DEC=- B1950 I=15.07 +/- 0.05 02D 14' 59" +/- 1" TYPE=M9.5+V Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) B1992.5 -0.00536 0.13258 0.0844 2 RG0050-2722 STAR, M V-IV RA=00H 50M 28.4S +/- 0.1S, DEC=- B1950 I=16.65 +/- 0.1 27D 22' 17" +/- 1" TYPE=M8V Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) B1978.0 0.00323 0.08808 0.0505 3 LP412-31 STAR, M V-IV RA=03H 18M 07.5S +/- 0.1S, B1950 R=17.6 +/- 0.5 DEC=+18D 43' 48" +/- 1" TYPE=M8V Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) B1955.8 0.02633 -0.24291 0.0 4 LP944-20 STAR, M V-IV RA=03H 37M 39.9S +/- 0.1S, DEC=- B1950 R=17.1 +/- 0.5 35D 35' 29" +/- 1" TYPE=M9V Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) B1978.9 0.01723 0.25957 0.0 5 LHS2065 STAR, M V-IV RA=08H 51M 05.6S +/- 0.1S, DEC=- B1950 I=14.54 +/- 0.05 03D 18' 07" +/- 1" TYPE=M9V Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) B1992.1 -0.03619 -0.19511 0.1173 6 LHS2243 STAR, M V-IV RA=10H 13M 45.8S +/- 0.1S, B1950 R=17.4 +/- 0.5 DEC=+28D 07' 09" +/- 1" TYPE=M8V Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) B1955.3 -0.00703 -0.50146 0.0 7 LHS2397A STAR, M V-IV RA=11H 19M 18.1S +/- 0.1S, DEC=- B1950 I=14.87 +/- 0.05 12D 56' 46" +/- 1" TYPE=M8V Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) B1992.1 -0.03479 -0.08056 0.0700 8 BRI1222-1222 STAR, M V-IV RA=12H 22M 17.1S +/- 0.1S, DEC=- B1950 R=18.8 +/- 0.5 12D 21' 58" +/- 1" TYPE=M9V Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) B1992.5 -0.01369 -0.11256 0.0 9 LHS2924 STAR, M V-IV RA=14H 26M 36.3S +/- 0.1S, B1950 I=15.3 +/- 0.1 DEC=+33D 24' 06" +/- 1" TYPE=M9V Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) B1992.1 -0.02828 -0.71960 0.0908 10 TVLM513- STAR, M V-IV RA=14H 58M 54.5S +/- 0.1S, B1950 I=15.09 +/- 0.05 46546 DEC=+23D 01' 51" +/- 1" TYPE=M8.5V Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) B1987.3 -0.00268 -0.07653 0.1005 11 TVLM868- STAR, M V-IV RA=15H 07M 41.2S +/- 0.1S, DEC=- B1950 I=15.79 +/- 0.05 110639 02D 29' 47" +/- 1" TYPE=M9V 6345( 3) - 12/08/95 10:18 - [ 4] TARGET LIST a) Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) B1987.3 -0.02704 0.02408 0.0602 6345( 3) - 12/08/95 10:18 - [ 5] Visit: 01 Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 BRI0021- WFPC2 IMAGE PC1 F814W 1 2S 0214 ------------------------------------------------------------------------------------------------------------------------------------ 2 BRI0021- WFPC2 IMAGE PC1 F814W CLOCKS=YES 1 2000S 0214 ------------------------------------------------------------------------------------------------------------------------------------ 3 BRI0021- WFPC2 IMAGE PC1 F814W CLOCKS=YES 1 300S 0214 ------------------------------------------------------------------------------------------------------------------------------------ 6345( 3) - 12/08/95 10:18 - [ 6] Visit: 02 Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 RG0050-2722 WFPC2 IMAGE PC1 F814W 1 2S ------------------------------------------------------------------------------------------------------------------------------------ 2 RG0050-2722 WFPC2 IMAGE PC1 F814W CLOCKS=YES 1 2000S ------------------------------------------------------------------------------------------------------------------------------------ 3 RG0050-2722 WFPC2 IMAGE PC1 F814W CLOCKS=YES 1 300S ------------------------------------------------------------------------------------------------------------------------------------ 6345( 3) - 12/08/95 10:18 - [ 7] Visit: 03 Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 LP412-31 WFPC2 IMAGE PC1 F814W 1 2S ------------------------------------------------------------------------------------------------------------------------------------ 2 LP412-31 WFPC2 IMAGE PC1 F814W CLOCKS=YES 1 2000S ------------------------------------------------------------------------------------------------------------------------------------ 3 LP412-31 WFPC2 IMAGE PC1 F814W CLOCKS=YES 1 300S ------------------------------------------------------------------------------------------------------------------------------------ 6345( 3) - 12/08/95 10:18 - [ 8] Visit: 04 Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 LP944-20 WFPC2 IMAGE PC1 F814W 1 2S ------------------------------------------------------------------------------------------------------------------------------------ 2 LP944-20 WFPC2 IMAGE PC1 F814W CLOCKS=YES 1 2000S ------------------------------------------------------------------------------------------------------------------------------------ 3 LP944-20 WFPC2 IMAGE PC1 F814W CLOCKS=YES 1 300S ------------------------------------------------------------------------------------------------------------------------------------ 6345( 3) - 12/08/95 10:18 - [ 9] Visit: 05 Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 LHS2065 WFPC2 IMAGE PC1 F814W 1 2S ------------------------------------------------------------------------------------------------------------------------------------ 2 LHS2065 WFPC2 IMAGE PC1 F814W CLOCKS=YES 1 2000S ------------------------------------------------------------------------------------------------------------------------------------ 3 LHS2065 WFPC2 IMAGE PC1 F814W CLOCKS=YES 1 300S ------------------------------------------------------------------------------------------------------------------------------------ 6345( 3) - 12/08/95 10:18 - [ 10] Visit: 06 Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 LHS2243 WFPC2 IMAGE PC1 F814W 1 2S ------------------------------------------------------------------------------------------------------------------------------------ 2 LHS2243 WFPC2 IMAGE PC1 F814W CLOCKS=YES 1 2000S ------------------------------------------------------------------------------------------------------------------------------------ 3 LHS2243 WFPC2 IMAGE PC1 F814W CLOCKS=YES 1 300S ------------------------------------------------------------------------------------------------------------------------------------ 6345( 3) - 12/08/95 10:18 - [ 11] Visit: 07 Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 LHS2397A WFPC2 IMAGE PC1 F814W 1 2S ------------------------------------------------------------------------------------------------------------------------------------ 2 LHS2397A WFPC2 IMAGE PC1 F814W CLOCKS=YES 1 2000S ------------------------------------------------------------------------------------------------------------------------------------ 3 LHS2397A WFPC2 IMAGE PC1 F814W CLOCKS=YES 1 300S ------------------------------------------------------------------------------------------------------------------------------------ 6345( 3) - 12/08/95 10:18 - [ 12] Visit: 08 Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 BRI1222- WFPC2 IMAGE PC1 F814W 1 2S 1222 ------------------------------------------------------------------------------------------------------------------------------------ 2 BRI1222- WFPC2 IMAGE PC1 F814W CLOCKS=YES 1 2000S 1222 ------------------------------------------------------------------------------------------------------------------------------------ 3 BRI1222- WFPC2 IMAGE PC1 F814W CLOCKS=YES 1 300S 1222 ------------------------------------------------------------------------------------------------------------------------------------ 6345( 3) - 12/08/95 10:18 - [ 13] Visit: 09 Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 LHS2924 WFPC2 IMAGE PC1 F814W 1 2S ------------------------------------------------------------------------------------------------------------------------------------ 2 LHS2924 WFPC2 IMAGE PC1 F814W CLOCKS=YES 1 2000S ------------------------------------------------------------------------------------------------------------------------------------ 3 LHS2924 WFPC2 IMAGE PC1 F814W CLOCKS=YES 1 300S ------------------------------------------------------------------------------------------------------------------------------------ 6345( 3) - 12/08/95 10:18 - [ 14] Visit: 10 Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 TVLM513- WFPC2 IMAGE PC1 F814W 1 2S 46546 ------------------------------------------------------------------------------------------------------------------------------------ 2 TVLM513- WFPC2 IMAGE PC1 F814W CLOCKS=YES 1 2000S 46546 ------------------------------------------------------------------------------------------------------------------------------------ 3 TVLM513- WFPC2 IMAGE PC1 F814W CLOCKS=YES 1 300S 46546 ------------------------------------------------------------------------------------------------------------------------------------ 6345( 3) - 12/08/95 10:18 - [ 15] Visit: 11 Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 TVLM868- WFPC2 IMAGE PC1 F814W 1 2S 110639 ------------------------------------------------------------------------------------------------------------------------------------ 2 TVLM868- WFPC2 IMAGE PC1 F814W CLOCKS=YES 1 2000S 110639 ------------------------------------------------------------------------------------------------------------------------------------ 3 TVLM868- WFPC2 IMAGE PC1 F814W CLOCKS=YES 1 300S 110639 ------------------------------------------------------------------------------------------------------------------------------------ 6345( 3) - 12/08/95 10:18 - [ 16] Summary Form for Proposal 6345 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFPC2 ------------------------------------------------------------------------------------------------------------------------------------ Opmodes IMAGE ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CLOCKS=YES ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category GO ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category CS ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F814W ------------------------------------------------------------------------------------------------------------------------------------ Target Names BRI0021-0214 RG0050-2722 LP412-31 LP944-20 LHS2065 LHS2243 LHS2397A BRI1222-1222 LHS2924 TVLM513-46546 TVLM868-110639 ------------------------------------------------------------------------------------------------------------------------------------