0 Assigned ID: 3061 ----- Attempting Submission 1 (Wed Aug 29 13:59:17 GMT 2012) ----- chandar Be very careful mixing POS TARG and Center_Pattern = Yes Submission with postarg change for GRB 130131 1378718561 ----- Attempting Submission 1 (Thu Oct 11 12:59:13 GMT 2012) ----- ----- Attempting Submission 2 (Thu Oct 31 22:13:06 GMT 2013) ----- HST Phase II Proposal 13117 (dark_4.apt) successfully submitted. ----- Attempting Submission 3 (Thu Oct 31 22:13:52 GMT 2013) ----- HST Phase II Proposal 13117 (dark_4.apt) successfully submitted. ----- Attempting Submission 5 (Fri Nov 01 22:54:54 GMT 2013) ----- ----- Attempting Submission 8 (Fri Dec 06 23:57:47 GMT 2013) ----- ----- Attempting Submission 9 (Mon Dec 09 15:05:23 GMT 2013) ----- ----- Attempting Submission 10 (Wed Dec 11 17:08:45 GMT 2013) ----- HST Phase II Proposal 13117 (13117_Dec10th.apt) successfully submitted. ----- Attempting Submission 11 (Wed Dec 11 17:26:52 GMT 2013) ----- ----- Attempting Submission 12 (Fri Dec 13 22:02:01 GMT 2013) ----- ----- Attempting Submission 13 (Thu Dec 19 13:41:03 GMT 2013) ----- ----- Attempting Submission 15 (Mon Apr 14 18:39:18 GMT 2014) ----- HST Phase II Proposal 13117 (13117_new.apt) successfully submitted. ----- Attempting Submission 16 (Tue Apr 15 19:00:07 GMT 2014) ----- We are aware of the POS TARG issue. We are moving the target to the corner of the chip to reduce CTE. A Chandra/HST survey of dark gamma-ray bursts and their hosts Dark gamma-ray bursts (GRBs) -- where the optical emission is apparently suppressed -- can only be reliably localized by their X-ray afterglows. Here we propose to continue a survey using the sensitivity and point spread function of Chandra to precisely pinpoint the GRB locations, and HST to locate and study the host galaxies. Our results to date are suggestive of most dark GRBs originating in more luminous galaxies than "bright" GRBs. Our new observations will increase the statistical certainty of this result, while simultaneously allowing us to more precisely identify the minority of dark GRBs which most likely originate from the highest redshifts. We propose to obtain optical and IR observations of a sample of the host galaxies of dark gamma-ray bursts, where the optical light was suppressed relative to the X-ray afterglow. Formally we require that the X-ray to optical spectral slope (beta_OX) be less than 0.5. Depending on information available from the ground we will use either a one or two orbit observation per host. For brighter galaxies we will use a 3-point dither in each of WFC3 UVIS(F606W) and IR(F160W) channels, split over a single orbit. For fainter targets we will use one orbit in each of F606W and F160W with a four point dither patten executed in each orbit. At present we do not know the locations of the bursts as they will become available during the coming ~year. We will remove the on-hold status and implement the final targets as they become available. COSMOLOGY 12 false false 0.0 0.0 false false false SUPPORTED GALAXY HIGH REDSHIFT GALAXY STAR FORMING REGION STARBURST J2000 GALAXY HIGH REDSHIFT GALAXY STAR FORMING REGION STARBURST J2000 GALAXY HIGH REDSHIFT GALAXY STAR FORMING REGION STARBURST J2000 GALAXY HIGH REDSHIFT GALAXY STAR FORMING REGION STARBURST J2000 UNIDENTIFIED X-RAY EMITTER J2000 WFC3/IR Imaging No No F160W WFC3/UVIS Imaging No No F606W WFC3/IR Imaging No No F160W WFC3/UVIS Imaging No No F606W WFC3/IR Imaging No No F160W WFC3/UVIS Imaging No No F606W WFC3/IR Imaging No No F160W WFC3/UVIS Imaging No No F606W POS-TARG DITHER 0.173 LINE 0.112 false false 81.785 4 23.884 WFC3-UVIS-DITHER-BOX 5 false POS-TARG DITHER DITHER 2 5.183 WFC3-IR-DITHER-LINE false true 0.636 2 41.859 POS-TARG WFC3-IR-DITHER-BLOB 41.788 6 true POS-TARG DITHER 0.605 LINE false false 3 41.788 WFC3-IR-DITHER-LINE-3PT 7 false POS-TARG DITHER 0.135 LINE false false 3 46.84 WFC3-UVIS-DITHER-LINE-3PT 8 false The scheduling data was generated by CASM 22.0. CASM was run in Phase II mode. /Users/levan/Documents/OP-cache/13117_new-v01.xml (Tic-Visit :proposal-id 13117 :visit-id "01" :proposal-version -1 :trans-version "20131031" :date "14-Apr-2014 15:43:03.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 1388512 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13117 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13117 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2865 :al-overhead-at-end 116 :internal-dur-at-end 668 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3229 :pcs-gap 0 ) true 1 0 Awaiting GRB positio The scheduling data was generated by CASM 22.0. CASM was run in Phase II mode. /Users/levan/Documents/OP-cache/13117_new-v05.xml (Tic-Visit :proposal-id 13117 :visit-id "05" :proposal-version -1 :trans-version "20131031" :date "14-Apr-2014 15:44:49.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 1336288 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13117 :visit-id "05" :obset-id "05" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13117 :visit-id "05" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2691 :al-overhead-at-end 116 :internal-dur-at-end 668 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3024 :pcs-gap 0 ) false 1 0 Awaiting GRB positio The scheduling data was generated by CASM 22.0. CASM was run in Phase II mode. /Users/levan/Documents/OP-cache/13117_new-v06.xml (Tic-Visit :proposal-id 13117 :visit-id "06" :proposal-version -1 :trans-version "20131031" :date "14-Apr-2014 15:43:12.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 1388512 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13117 :visit-id "06" :obset-id "06" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13117 :visit-id "06" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2865 :al-overhead-at-end 116 :internal-dur-at-end 668 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3229 :pcs-gap 0 ) true 1 0 Awaiting GRB positio The scheduling data was generated by CASM 22.0. CASM was run in Phase II mode. /Users/levan/Documents/OP-cache/13117_new-v02.xml 1388396061000 142.0 (Tic-Visit :proposal-id 13117 :visit-id "02" :proposal-version -1 :trans-version "20131031" :date "14-Apr-2014 15:43:14.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 2129888 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13117 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13117 :visit-id "02" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2646 :al-overhead-at-end 0 :internal-dur-at-end 65 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3073 :pcs-gap 0 ) (Tic-Orbit :proposal-id 13117 :visit-id "02" :orbit-number 2 :pcs-time 222 :si-vis-utilization 2792 :al-overhead-at-end 116 :internal-dur-at-end 668 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3073 :pcs-gap 0 ) true 2 0 Awaiting GRB position The scheduling data was generated by CASM 22.0. CASM was run in Phase II mode. /Users/levan/Documents/OP-cache/13117_new-v04.xml (Tic-Visit :proposal-id 13117 :visit-id "04" :proposal-version -1 :trans-version "20131031" :date "14-Apr-2014 15:43:20.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 3 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 3518432 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13117 :visit-id "04" :obset-id "04" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13117 :visit-id "04" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2646 :al-overhead-at-end 0 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3013 :pcs-gap 0 ) (Tic-Orbit :proposal-id 13117 :visit-id "04" :orbit-number 2 :pcs-time 222 :si-vis-utilization 2790 :al-overhead-at-end 116 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3013 :pcs-gap 0 ) (Tic-Orbit :proposal-id 13117 :visit-id "04" :orbit-number 3 :pcs-time 222 :si-vis-utilization 2788 :al-overhead-at-end 116 :internal-dur-at-end 668 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3013 :pcs-gap 0 ) true 3 0