11840( 4) - 06-Aug-2009 13:17:55 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 11840 Version: 4 Check-in Time: 06-Aug-2009 13:17:55 STScI Edit Number: 0 Title Identifying the host galaxies for optically dark gamma-ray bursts ------------------------------------------------------------------------------------ Type Cycle GO 17 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Andrew J. Levan The University of Warwick CoI: Dr. Nial R. Tanvir University of Leicester N CoI: Dr. Jens Hjorth University of Copenhagen, Niels Bohr N Institute CoI: Dr. Andrew S. Fruchter Space Telescope Science Institute N CoI: Dr. Darach Watson University of Copenhagen, Niels Bohr N Institute CoI: Dr. Pall Jakobsson University of Hertfordshire N CoI: Dr. Robert S. Priddey University of Hertfordshire N CoI: Dr. Paul T. O'Brien University of Leicester N CoI: Dr. Peter J. Wheatley The University of Warwick N CoI: Dr. Karl Svensson The University of Warwick N ------------------------------------------------------------------------------------ Abstract We propose to use the high spatial resolution of Chandra to obtain precise positions for a sample of Gamma-Ray Bursts (GRBs) with no optical afterglows, where the optical light is suppressed relative to the X-ray flux. These bursts are likely to be highly obscured and may have different environments from the optically bright GRBs. Our Chandra observations will (unlike Swift XRT positions) allow for the unique identification of a host galaxy. To locate these host galaxies we will follow up our Chandra positions with deep optical and IR observations with HST. The ultimate aim is to understand any differences between the host galaxies of optically dark and bright GRBs, and how these affect the use of GRBs as tracers of starformation and galaxy evolution at high redshift. ------------------------------------------------------------------------------------ Observations Description ------------------------ We will observe the host galaxies of dark gamma-ray bursts in two filters utilizing ACS/WFC F606W and WFC3/IR F160W. In each filter we will obtain a one orbit observation, split into a 4 point dither for PSF recovery. Our aim is to detect the hosts, and characterize their luminosity, colours and morphology. We will subsequently constrast these with those of the larger sample of GRBs which exhibit bright optical afterglows. Our targets will become available over the course of the next Chandra cycle (roughly Dec 2008-Dec 2009), we will activate individual visits as the co-ordinates are known. As the targets are host galaxies and not afterglows these observations are not ToOs and can be scheduled at any time after the positions are known. Real Time Justification 11840( 4) - 06-Aug-2009 13:17:55 - [ 2] ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 11840( 4) - 06-Aug-2009 13:17:55 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 6 GRB090113 GALAXY, HIGH REDSHIFT RA=02H08M13.7100S +/- 0.5", J2000 V = 26 +/- 1 GALAXY DEC=+33D25'42.20" +/- 0.5" Reference Frame: Other: Chandra Comments: ------------------------------------------------------------------------------------------------------------------------------------ 7 GRB090404 GALAXY, HIGH REDSHIFT RA=15H56M57.5000S +/- 1.5", J2000 V = 27 +/- 1 GALAXY DEC=+35D30'58.10" +/- 1.5" Reference Frame: Other: Chandra Comments: ------------------------------------------------------------------------------------------------------------------------------------ 8 GRB090407 GALAXY, HIGH REDSHIFT RA=04H35M54.9800S +/- 1.2", J2000 V = 27 +/- 1 GALAXY DEC=-12D40'45.50" +/- 1.2" Reference Frame: Other: Chandra Comments: ------------------------------------------------------------------------------------------------------------------------------------ 9 GRB090417B GALAXY, HIGH REDSHIFT RA=13H58M46.6200S +/- 1.0", J2000 V = 21.6 +/- 0.2 GALAXY DEC=+47D01'5.40" +/- 1.0" Reference Frame: Other: Chandra Comments: ------------------------------------------------------------------------------------------------------------------------------------ 11840( 4) - 06-Aug-2009 13:17:55 - [ 4] TARGET LIST Generic Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Selection Criteria | Flux data No | Name | Description | | ------------------------------------------------------------------------------------------------------------------------------------ 1 DARKGRB1 GALAXY, HIGH REDSHIFT ON HOLD FOR CHANDRA OBSERVATIONS V = 25 +/- 1 GALAXY ------------------------------------------------------------------------------------------------------------------------------------ 11840( 4) - 06-Aug-2009 13:17:55 - [ 5] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type ACS-WFC-DITHER-BOX Pattern_Purpose DITHER Number_Of_Points 4 Point_Spacing 0.265 Line_Spacing 0.187 Coordinate_Frame POS-TARG Pattern_Orient 20.67 Angle_Between_Sides 69.05 Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 2 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-IR-DITHER-BOX-MIN Pattern_Purpose DITHER Number_Of_Points 4 Point_Spacing 0.572 Line_Spacing 0.365 Coordinate_Frame POS-TARG Pattern_Orient 18.528 Angle_Between_Sides 74.653 Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ 11840( 4) - 06-Aug-2009 13:17:55 - [ 6] Visit: A1 Visit Requirements: ORIENT 53.2D TO 123.2 D; ORIENT 143.2D TO 213.2 D; ORIENT 233.2D TO 303.2 D; ORIENT 323.2D TO 33.2 D 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 GRB090113 ACS/WFC ACCUM WFC1 F606W 1 500 S PATTERN 1 1 see below ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ GRB090113 1 ACS/WFC ACCUM WFC1 F606W 1 none none none 1 552.0 S GRB090113 1 ACS/WFC ACCUM WFC1 F606W 2 none none none 1 552.0 S GRB090113 1 ACS/WFC ACCUM WFC1 F606W 3 none none none 1 552.0 S GRB090113 1 ACS/WFC ACCUM WFC1 F606W 4 none none none 1 552.0 S 11840( 4) - 06-Aug-2009 13:17:55 - [ 7] Visit: A2 Visit Requirements: ORIENT 24.6D TO 56.9 D; ORIENT 81.7D TO 94.6 D; ORIENT 114.6D TO 146.9 D; ORIENT 171.7D TO 184.6 D; ORIENT 204.6D TO 236.9 D; ORIENT 261.7D TO 274.6 D; ORIENT 294.6D TO 326.9 D; ORIENT 351.7D TO 4.6 D 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 GRB090404 ACS/WFC ACCUM WFC1 F606W 1 500 S PATTERN 1 1 see below ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ GRB090404 1 ACS/WFC ACCUM WFC1 F606W 1 none none none 1 552.0 S GRB090404 1 ACS/WFC ACCUM WFC1 F606W 2 none none none 1 552.0 S GRB090404 1 ACS/WFC ACCUM WFC1 F606W 3 none none none 1 552.0 S GRB090404 1 ACS/WFC ACCUM WFC1 F606W 4 none none none 1 552.0 S 11840( 4) - 06-Aug-2009 13:17:55 - [ 8] Visit: A3 Visit Requirements: ORIENT 66D TO 103.7 D; ORIENT 156D TO 193.7 D; ORIENT 246D TO 283.7 D; ORIENT 336D TO 13.7 D 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 GRB090407 ACS/WFC ACCUM WFC1 F606W 1 500 S PATTERN 1 1 see below ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ GRB090407 1 ACS/WFC ACCUM WFC1 F606W 1 none none none 1 552.0 S GRB090407 1 ACS/WFC ACCUM WFC1 F606W 2 none none none 1 552.0 S GRB090407 1 ACS/WFC ACCUM WFC1 F606W 3 none none none 1 552.0 S GRB090407 1 ACS/WFC ACCUM WFC1 F606W 4 none none none 1 552.0 S 11840( 4) - 06-Aug-2009 13:17:55 - [ 9] Visit: A4 Visit Requirements: 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 GRB090417B ACS/WFC ACCUM WFC1 F606W 1 500 S PATTERN 1 1 see below ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ GRB090417B 1 ACS/WFC ACCUM WFC1 F606W 1 none none none 1 552.0 S GRB090417B 1 ACS/WFC ACCUM WFC1 F606W 2 none none none 1 552.0 S GRB090417B 1 ACS/WFC ACCUM WFC1 F606W 3 none none none 1 552.0 S GRB090417B 1 ACS/WFC ACCUM WFC1 F606W 4 none none none 1 552.0 S 11840( 4) - 06-Aug-2009 13:17:55 - [ 10] Visit: A5 Visit Requirements: ON HOLD On Hold Comments: Visit will be activated once a position for the burst is known. 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 DARKGRB1 ACS/WFC ACCUM WFC1 F606W 1 500 S PATTERN 1 1 see below ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ DARKGRB1 1 ACS/WFC ACCUM WFC1 F606W 1 none none none 1 552.0 S DARKGRB1 1 ACS/WFC ACCUM WFC1 F606W 2 none none none 1 552.0 S DARKGRB1 1 ACS/WFC ACCUM WFC1 F606W 3 none none none 1 552.0 S DARKGRB1 1 ACS/WFC ACCUM WFC1 F606W 4 none none none 1 552.0 S 11840( 4) - 06-Aug-2009 13:17:55 - [ 11] Visit: W1 Visit Requirements: ORIENT 53.2D TO 123.2 D; ORIENT 143.2D TO 213.2 D; ORIENT 233.2D TO 303.2 D; ORIENT 323.2D TO 33.2 D 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 GRB090113 WFC3/IR MULTIAC IR F160W NSAMP=14, SAMP-SEQ=SPARS50 1 DEF PATTERN 2 1 CUM ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ GRB090113 1 WFC3/IR MULTIAC IR F160W 1 none none none 1 N/A CUM GRB090113 1 WFC3/IR MULTIAC IR F160W 2 none none none 1 N/A CUM GRB090113 1 WFC3/IR MULTIAC IR F160W 3 none none none 1 N/A CUM GRB090113 1 WFC3/IR MULTIAC IR F160W 4 none none none 1 N/A CUM 11840( 4) - 06-Aug-2009 13:17:55 - [ 12] Visit: W2 Visit Requirements: ORIENT 24.6D TO 56.9 D; ORIENT 81.7D TO 94.6 D; ORIENT 114.6D TO 146.9 D; ORIENT 171.7D TO 184.6 D; ORIENT 204.6D TO 236.9 D; ORIENT 261.7D TO 274.6 D; ORIENT 294.6D TO 326.9 D; ORIENT 351.7D TO 4.6 D 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 GRB090404 WFC3/IR MULTIAC IR F160W NSAMP=14, SAMP-SEQ=SPARS50 1 DEF PATTERN 2 1 CUM ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ GRB090404 1 WFC3/IR MULTIAC IR F160W 1 none none none 1 N/A CUM GRB090404 1 WFC3/IR MULTIAC IR F160W 2 none none none 1 N/A CUM GRB090404 1 WFC3/IR MULTIAC IR F160W 3 none none none 1 N/A CUM GRB090404 1 WFC3/IR MULTIAC IR F160W 4 none none none 1 N/A CUM 11840( 4) - 06-Aug-2009 13:17:55 - [ 13] Visit: W3 Visit Requirements: ORIENT 66D TO 103.7 D; ORIENT 156D TO 193.7 D; ORIENT 246D TO 283.7 D; ORIENT 0336D TO 13.7 D 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 GRB090407 WFC3/IR MULTIAC IR F160W NSAMP=14, SAMP-SEQ=SPARS50 1 DEF PATTERN 2 1 CUM ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ GRB090407 1 WFC3/IR MULTIAC IR F160W 1 none none none 1 N/A CUM GRB090407 1 WFC3/IR MULTIAC IR F160W 2 none none none 1 N/A CUM GRB090407 1 WFC3/IR MULTIAC IR F160W 3 none none none 1 N/A CUM GRB090407 1 WFC3/IR MULTIAC IR F160W 4 none none none 1 N/A CUM 11840( 4) - 06-Aug-2009 13:17:55 - [ 14] Visit: W4 Visit Requirements: 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 GRB090417B WFC3/IR MULTIAC IR F160W NSAMP=14, SAMP-SEQ=SPARS50 1 DEF PATTERN 2 1 CUM ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ GRB090417B 1 WFC3/IR MULTIAC IR F160W 1 none none none 1 N/A CUM GRB090417B 1 WFC3/IR MULTIAC IR F160W 2 none none none 1 N/A CUM GRB090417B 1 WFC3/IR MULTIAC IR F160W 3 none none none 1 N/A CUM GRB090417B 1 WFC3/IR MULTIAC IR F160W 4 none none none 1 N/A CUM 11840( 4) - 06-Aug-2009 13:17:55 - [ 15] Visit: W5 Visit Requirements: ON HOLD On Hold Comments: Awaiting Dark GRB position from Chandra 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 DARKGRB1 WFC3/IR MULTIAC IR F160W NSAMP=14, SAMP-SEQ=SPARS50 1 DEF PATTERN 2 1 CUM ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ DARKGRB1 1 WFC3/IR MULTIAC IR F160W 1 none none none 1 N/A CUM DARKGRB1 1 WFC3/IR MULTIAC IR F160W 2 none none none 1 N/A CUM DARKGRB1 1 WFC3/IR MULTIAC IR F160W 3 none none none 1 N/A CUM DARKGRB1 1 WFC3/IR MULTIAC IR F160W 4 none none none 1 N/A CUM 11840( 4) - 06-Aug-2009 13:17:55 - [ 16] Summary Form for Proposal 11840 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures IR, WFC1 ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/WFC, WFC3/IR ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, MULTIACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters NSAMP=14, SAMP-SEQ=SPARS50 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ON HOLD , ORIENT 0336D TO 13.7 D, ORIENT 114.6D TO 146.9 D, ORIENT 143.2D TO 213.2 D, ORIENT 156D TO 193.7 D, ORIENT 171.7D TO 184.6 D, ORIENT 204.6D TO 236.9 D, ORIENT 233.2D TO 303.2 D, ORIENT 24.6D TO 56.9 D, ORIENT 246D TO 283.7 D, ORIENT 261.7D TO 274.6 D, ORIENT 294.6D TO 326.9 D, ORIENT 323.2D TO 33.2 D, ORIENT 336D TO 13.7 D, ORIENT 351.7D TO 4.6 D, ORIENT 53.2D TO 123.2 D, ORIENT 66D TO 103.7 D, ORIENT 81.7D TO 94.6 D, PATTERN 1 1, PATTERN 2 1 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F160W, F606W ------------------------------------------------------------------------------------------------------------------------------------ Target Names DARKGRB1, GRB090113, GRB090404, GRB090407, GRB090417B ------------------------------------------------------------------------------------------------------------------------------------