6764( 9) - 08/07/96 15:58 - [ 1] PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID: 6764 Version: 9 Check-in Date: 07-Aug-1996 15:52:56 1.Proposal Title: Detection and Mass Determination of Low- mass Companions to Nearby M Dwarfs - Continuation ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Cycle COOL STARS GO 6 ------------------------------------------------------------------------------------ 5. Investigators Contact? PI: G. Fritz Benedict UNIVERSITY OF TEXAS CoI: J. Davy Kirkpatrick IPAC-Caltech N CoI: William Cochran McDonald Observatory-University of Texas N CoI: Otto Franz Lowell Observatory N CoI: Todd Henry Space Telescope Science Institute N ------------------------------------------------------------------------------------ 6. Abstract This is a continuation proposal. We know of 188 M dwarfs within 10 parsecs, yet there are very few mass determinations for these faintest and most common stellar constituents of our Galaxy. Additional low-mass binaries are badly needed to determine better the mass-luminosity relation at the lower end of the main sequence. Furthermore, no unambiguous brown dwarfs have been identified, though theory would predict that they exist in great numbers. Nearby M dwarfs provide an ideal hunting ground for low-mass secondaries, whether they are stellar or substellar. Companions can be detected in short- period orbits that can be mapped with a small investment of telescope time, allowing each object's mass to be determined. The identification and follow-up of brown dwarfs and very low mass stars provides insight into such diverse problems as the (purported) galactic missing mass and the formation of stellar and planetary systems. Using HST\ Fine Guidance Sensor 3, we will acquire POS and TRANS mode observations of one M dwarf primaries with suspected, very low- mass secondaries. TRANS mode observations (0sec point010 resolution) will either confirm these companions or allow more stringent upper mass estimates to be made for unresolved companions. POS mode observations for the targets will provide more precise determinations of astrometric perturbations and will, in fact, be capable of detecting companions down to ~0.01 Msun, the regime of high-mass planets. ------------------------------------------------------------------------------------ 6764( 9) - 08/07/96 15:58 - [ 2] Observations Description ------------------------ o Using a combination of TRANS and POS modes, we will observe GL 791.2 six times during Cycle 6. A POS mode observation set will consist of multiple runs through this sequence: target, drift check star, reference stars, target, drift check star. The number of repeats in one orbit will depend on the magnitudes of the reference stars. Each of the 15 POS mode observation sets will require one orbit. Real Time Justification ----------------------- Important complementary observations of these low mass systems will be accomplished from the ground using two- dimensional infrared speckle imaging. We will also obtain radial velocity measurements with which to determine sin i, the inclination factor, allowing absolute masses to be determined. Calibration Justification ------------------------- LTSTABS must continue. Additional Comments ------------------- ------------------------------------------------------------------------------------ Data Distribution Media: 8MM Blocking Factor: 10 Ship To: GF Benedict / McDonald Obs/UTEXAS/Austin, TX 78712 Ship Via: UPS Email: fritz@dorrit.as.utexas.edu , ------------------------------------------------------------------------------------ 6764( 9) - 08/07/96 15:58 - [ 3] TARGET LIST a) Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 GL791 STAR RA=307.4500000D +/- 0.00014D, J2000 V = 13.05+/-0.1 DEC= 9.6883056D +/- 0.00014D Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 1995.6 0.04557 0.1213 0.114 2 GL791-2-REF CALIBRATION,ASTROMETRIC RA=307.4682083D +/- 0.00014D, J2000 V = 11.7+/-0.2 , DEC= 9.6913528D +/- 0.00014D Comments: STAR 181 IN GFB LIST 3 GL791-3-REF CALIBRATION,ASTROMETRIC RA=307.4594458D +/- 0.00014D, J2000 V = 14.6+/-0.2 , DEC= 9.6848833D +/- 0.00014D Comments: STAR 169 IN GFB LIST 4 GL791-4-REF CALIBRATION,ASTROMETRIC RA=307.437175D +/- 0.00014D, J2000 V = 14.8+/-0.2 , DEC= 9.6833056D +/- 0.00014D Comments: STAR 146 IN GFB LIST 6764( 9) - 08/07/96 15:58 - [ 4] Visit: 01 Visit Requirements: AFTER 6 BY 25D TO 35D 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 ------------------------------------------------------------------------------------------------------------------------------------ 10 GL791 FGS POS 3 F583W 1 52 S POS TARG 0.0, 0.0;MAX DUR 52S SEQ 10-92 NON-INT Comments: OBSERVATION MAY BE TRUNCATED TO SATISFY MONITORING SPACING REQUIREMENTS; FINE LOCK GUIDING ------------------------------------------------------------------------------------------------------------------------------------ 20 GL791-2-REF FGS POS 3 F583W 1 32 S MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 30 GL791-3-REF FGS POS 3 F583W 1 52 S MAX DUR 52S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 40 GL791-4-REF FGS POS 3 F583W 1 32 S MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 51 GL791 FGS TRANS 3 F583W SCANS=30,STEP-SIZE=1 1 600 S Comments: FINE LOCK GUIDING ------------------------------------------------------------------------------------------------------------------------------------ 60 GL791 FGS POS 3 F583W 1 52 S MAX DUR 52S Comments: FINE LOCK GUIDING ------------------------------------------------------------------------------------------------------------------------------------ 70 GL791-2-REF FGS POS 3 F583W 1 32 S MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 80 GL791-3-REF FGS POS 3 F583W 1 52 S MAX DUR 52S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 90 GL791-4-REF FGS POS 3 F583W 1 32 S MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 91 GL791-2-REF FGS POS 3 F583W 1 32 S MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 92 GL791 FGS POS 3 F583W 1 52 S MAX DUR 52S Comments: FINE LOCK GUIDING ------------------------------------------------------------------------------------------------------------------------------------ 6764( 9) - 08/07/96 15:58 - [ 5] Visit: 02 Visit Requirements: BETWEEN 10-Sep-1996:00:00:00 AND 20-Sep-1996:23:22:27 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 ------------------------------------------------------------------------------------------------------------------------------------ 10 GL791 FGS POS 3 F583W 1 52 S POS TARG 0.0, 0.0; MAX DUR 52S; SEQ 10-92 NON-INT Comments: FINE LOCK GUIDING ------------------------------------------------------------------------------------------------------------------------------------ 20 GL791-2-REF FGS POS 3 F583W 1 32 S MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 30 GL791-3-REF FGS POS 3 F583W 1 52 S MAX DUR 52S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 40 GL791-4-REF FGS POS 3 F583W 1 32 S MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 51 GL791 FGS TRANS 3 F583W SCANS=30,STEP-SIZE=1 1 10 M Comments: FINE LOCK GUIDING ------------------------------------------------------------------------------------------------------------------------------------ 60 GL791 FGS POS 3 F583W 1 52 S MAX DUR 52S Comments: FINE LOCK GUIDING ------------------------------------------------------------------------------------------------------------------------------------ 70 GL791-2-REF FGS POS 3 F583W 1 32 S MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 80 GL791-3-REF FGS POS 3 F583W 1 52 S MAX DUR 52S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 90 GL791-4-REF FGS POS 3 F583W 1 32 S MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 91 GL791-2-REF FGS POS 3 F583W 1 32 S MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 92 GL791 FGS POS 3 F583W 1 52 S MAX DUR 52S Comments: FINE LOCK GUIDING ------------------------------------------------------------------------------------------------------------------------------------ 6764( 9) - 08/07/96 15:58 - [ 6] Visit: 03 Visit Requirements: AFTER 2 BY 25D to 35D 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 ------------------------------------------------------------------------------------------------------------------------------------ 10 GL791 FGS POS 3 F583W 1 52 S POS TARG 0.0, 0.0; MAX DUR 52S; SEQ 10-92 NON-INT Comments: FINE LOCK GUIDING ------------------------------------------------------------------------------------------------------------------------------------ 20 GL791-2-REF FGS POS 3 F583W 1 32 S MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 30 GL791-3-REF FGS POS 3 F583W 1 52 S MAX DUR 52S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 40 GL791-4-REF FGS POS 3 F583W 1 32 S MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 51 GL791 FGS TRANS 3 F583W SCANS=30,STEP-SIZE=1 1 10 M Comments: FINE LOCK GUIDING ------------------------------------------------------------------------------------------------------------------------------------ 60 GL791 FGS POS 3 F583W 1 52 S MAX DUR 52S Comments: FINE LOCK GUIDING ------------------------------------------------------------------------------------------------------------------------------------ 70 GL791-2-REF FGS POS 3 F583W 1 32 S MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 80 GL791-3-REF FGS POS 3 F583W 1 52 S MAX DUR 52S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 90 GL791-4-REF FGS POS 3 F583W 1 32 S MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 91 GL791-2-REF FGS POS 3 F583W 1 32 S MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 92 GL791 FGS POS 3 F583W 1 52 S MAX DUR 52S Comments: FINE LOCK GUIDING ------------------------------------------------------------------------------------------------------------------------------------ 6764( 9) - 08/07/96 15:58 - [ 7] Visit: 04 Visit Requirements: AFTER 3 BY 25D to 35D 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 ------------------------------------------------------------------------------------------------------------------------------------ 10 GL791 FGS POS 3 F583W 1 52 S POS TARG 0.0, 0.0; MAX DUR 52S; SEQ 10-92 NON-INT Comments: FINE LOCK GUIDING ------------------------------------------------------------------------------------------------------------------------------------ 20 GL791-2-REF FGS POS 3 F583W 1 32 S MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 30 GL791-3-REF FGS POS 3 F583W 1 52 S MAX DUR 52S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 40 GL791-4-REF FGS POS 3 F583W 1 32 S MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 51 GL791 FGS TRANS 3 F583W SCANS=30,STEP-SIZE=1 1 10 M Comments: FINE LOCK GUIDING ------------------------------------------------------------------------------------------------------------------------------------ 60 GL791 FGS POS 3 F583W 1 52 S MAX DUR 52S Comments: FINE LOCK GUIDING ------------------------------------------------------------------------------------------------------------------------------------ 70 GL791-2-REF FGS POS 3 F583W 1 32 S MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 80 GL791-3-REF FGS POS 3 F583W 1 52 S MAX DUR 52S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 90 GL791-4-REF FGS POS 3 F583W 1 32 S MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 91 GL791-2-REF FGS POS 3 F583W 1 32 S MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 92 GL791 FGS POS 3 F583W 1 52 S MAX DUR 52S Comments: FINE LOCK GUIDING ------------------------------------------------------------------------------------------------------------------------------------ 6764( 9) - 08/07/96 15:58 - [ 8] Visit: 05 Visit Requirements: AFTER 4 BY 25D to 35D 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 ------------------------------------------------------------------------------------------------------------------------------------ 10 GL791 FGS POS 3 F583W 1 52 S POS TARG 0.0, 0.0; MAX DUR 52S; SEQ 10-92 NON-INT Comments: FINE LOCK GUIDING ------------------------------------------------------------------------------------------------------------------------------------ 20 GL791-2-REF FGS POS 3 F583W 1 32 S MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 30 GL791-3-REF FGS POS 3 F583W 1 52 S MAX DUR 52S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 40 GL791-4-REF FGS POS 3 F583W 1 32 S MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 51 GL791 FGS TRANS 3 F583W SCANS=30,STEP-SIZE=1 1 10 M Comments: FINE LOCK GUIDING ------------------------------------------------------------------------------------------------------------------------------------ 60 GL791 FGS POS 3 F583W 1 52 S MAX DUR 52S Comments: FINE LOCK GUIDING ------------------------------------------------------------------------------------------------------------------------------------ 70 GL791-2-REF FGS POS 3 F583W 1 32 S MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 80 GL791-3-REF FGS POS 3 F583W 1 52 S MAX DUR 52S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 90 GL791-4-REF FGS POS 3 F583W 1 32 S MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 91 GL791-2-REF FGS POS 3 F583W 1 32 S MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 92 GL791 FGS POS 3 F583W 1 52 S MAX DUR 52S Comments: FINE LOCK GUIDING ------------------------------------------------------------------------------------------------------------------------------------ 6764( 9) - 08/07/96 15:58 - [ 9] Visit: 06 Visit Requirements: BETWEEN 17-MAR-1997 and 30-APR-1997 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 ------------------------------------------------------------------------------------------------------------------------------------ 10 GL791 FGS POS 3 F583W 1 52 S POS TARG 0.0, 0.0; MAX DUR 52S; SEQ 10-92 NON-INT Comments: FINE LOCK GUIDING ------------------------------------------------------------------------------------------------------------------------------------ 20 GL791-2-REF FGS POS 3 F583W 1 32 S MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 30 GL791-3-REF FGS POS 3 F583W 1 52 S MAX DUR 52S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 40 GL791-4-REF FGS POS 3 F583W 1 32 S MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 51 GL791 FGS TRANS 3 F583W SCANS=30,STEP-SIZE=1 1 10 M Comments: FINE LOCK GUIDING ------------------------------------------------------------------------------------------------------------------------------------ 60 GL791 FGS POS 3 F583W 1 52 S MAX DUR 52S Comments: FINE LOCK GUIDING ------------------------------------------------------------------------------------------------------------------------------------ 70 GL791-2-REF FGS POS 3 F583W 1 32 S MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 80 GL791-3-REF FGS POS 3 F583W 1 52 S MAX DUR 52S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 90 GL791-4-REF FGS POS 3 F583W 1 32 S MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 91 GL791-2-REF FGS POS 3 F583W 1 32 S MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 92 GL791 FGS POS 3 F583W 1 52 S MAX DUR 52S Comments: FINE LOCK GUIDING ------------------------------------------------------------------------------------------------------------------------------------ 6764( 9) - 08/07/96 15:58 - [ 10] Summary Form for Proposal 6764 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations FGS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes POS TRANS ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters SCANS=30 STEP-SIZE=1 ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category GO ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category COOL STARS ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements AFTER 6 BY 25D TO 35D POS TARG 0.0, 0.0;MAX DUR 52S SEQ 10-92 NON-INT MAX DUR 32S MAX DUR 52S BETWEEN 10-Sep-1996 00 00 00 AND 20-Sep-1996 23 22 27 POS TARG 0.0, 0.0; MAX DUR 52S; SEQ 10-92 NON-INT AFTER 2 BY 25D to 35D AFTER 3 BY 25D to 35D AFTER 4 BY 25D to 35D BETWEEN 17-MAR-1997 and 30-APR-1997 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F583W ------------------------------------------------------------------------------------------------------------------------------------ Target Names GL791 GL791-2-REF GL791-3-REF GL791-4-REF ------------------------------------------------------------------------------------------------------------------------------------