Please find attached our mid-cycle proposal for observations of GRB 190829A. -1525936348 Assigned ID: 1155 ----- Attempting Submission 1 (Fri Sep 27 21:48:07 GMT 2019) ----- Please find attached our submission of GO16042 for observations of GRB190829A at late times. Please let us know in case of any questions. Best Wishes, Andrew changed to a sequence 01-03, and added FGS3 on visits 01-03 changed the aperture on visit 03, exp. 2 to UVIS1 (instead of UVIS 2) added a timing window to visit 03, and slightly altered those for visits 01 and 02. -634891742 ----- Attempting Submission 1 (Fri Dec 06 07:32:23 GMT 2019) ----- ----- Attempting Submission 2 (Fri Dec 06 15:13:38 GMT 2019) ----- ----- Attempting Submission 3 (Tue Dec 17 14:31:59 GMT 2019) ----- ----- Attempting Submission 4 (Thu Jan 23 21:32:03 GMT 2020) ----- Do collapsars make the heavy elements: A sensitive search in a nearby gamma-ray burst? The origin of half of the elements heavier than iron -- the so-called r-process elements -- is a central unsolved mystery in astrophysics. These atoms include both precious metals (e.g. gold) as well as radioactive elements required for geophysical processes on the Earth (e.g. thorium) and even some which are necessary on Earth for advanced life (e.g. iodine). Recent observations with both light and gravitational waves have demonstrated that at least some of these elements are formed through the merger of two neutron stars, but such a population struggles to reproduce the enrichment patterns seen in stars within the Milky Way as well apparent early enrichment in some dwarf galaxies. Instead, recent work implies that the accretion disks formed in the stellar collapse that powers a long duration gamma-ray burst could in-fact be a dominant site. If this is true we should be able to observe r-process synthesis in the associated supernovae. The presence of lanthanides in r-process material creates strong opacity, such that the signature of their synthesis should be a late time infrared component visible in the supernova light. Here we propose sensitive HST observations that will search for both spectroscopic and photometric evidence of the r-process, providing the opportunity to test, for the first time, if collapsars are responsible for heavy element production. This proposal seeks to obtain late time observations of GRB190829A with the aim of understanding if it creates heavy r-process elements. Our observational strategy has been chosen to map to observations taken at early times in terms of filters and so uses F140W rather than F160W as stated in the phase1. With this programme we seek 3 epochs of observations. The first will be taken in Feb/March 2020. It will obtain grism spectroscopy (2 orbits) in both G102 and G141. It will also obtain deep imaging in F606W and F140W. A second epoch of observations will be taken once the source emerges from the Sun in June 2020. This will consist only of F140W and F606W imaging. A third epoch should be taken in August/September 2020 and will also consist only of F606W/F140W imaging. The team submitting this proposal has a great deal of expertise in studies of the transient Universe. The PI has led a total of 32 successful HST proposals that address the nature of gamma-ray bursts, supernovae, tidal disruption events and gravitational wave sources. These proposals have led to a large number of refereed papers reporting the observations. The CoIs also include experts on studies of supernovae and gamma-ray bursts, many of whom have significant HST experience. We also maintain a large scale follow-up operations with ground based facilities (in particular the VLT), and will supplement the data obtained here with ground based observations when the source is sufficiently bright. However, the observations that we propose are impractical from the ground. In addition to the previous expertise, we also have the currently available resources (individual time, postdoctoral support etc) to enable the timely analysis and publication of the observations obtained here. Stellar Physics 6 false false false false false false false SUPPORTED UNIDENTIFIED X-RAY EMITTER J2000 WFC3/IR Spectroscopic No No G141 WFC3/IR Imaging No No F140W WFC3/IR Spectroscopic No No G102 WFC3/IR Imaging No No F110W WFC3/UVIS Imaging No No F606W WFC3/IR Imaging No No F160W POS-TARG DITHER 0.605 LINE false false 3 41.788 WFC3-IR-DITHER-LINE-3PT 1 false POS-TARG DITHER 0.135 LINE false false 3 46.84 WFC3-UVIS-DITHER-LINE-3PT 2 false Timing link suitability includes constraints ([Sequence (01 02 03) within 7.0 days]) The scheduling data was generated by CASM 28.0. CASM was run in Phase II mode. /private/var/folders/9d/znlr3gj56k5gg7kstwq1rs1w0000gn/T/OPVisit13597743004735652216.xml (Tic-Visit :proposal-id 16042 :visit-id "01" :proposal-version -1 :trans-version "20191203" :date "23-Jan-2020 22:25:10.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1897536 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 16042 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 16042 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2650 :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 3145 :pcs-gap 0 ) (Tic-Orbit :proposal-id 16042 :visit-id "01" :orbit-number 2 :pcs-time 302 :si-vis-utilization 2578 :al-overhead-at-end 0 :internal-dur-at-end 709 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3145 :pcs-gap 0 ) true 2 0 Timing link suitability includes constraints ([Sequence (01 02 03) within 7.0 days]) The scheduling data was generated by CASM 28.0. CASM was run in Phase II mode. /private/var/folders/9d/znlr3gj56k5gg7kstwq1rs1w0000gn/T/OPVisit6725615053677639555.xml (Tic-Visit :proposal-id 16042 :visit-id "02" :proposal-version -1 :trans-version "20191203" :date "23-Jan-2020 22:25:12.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1897536 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 16042 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 16042 :visit-id "02" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2651 :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 3145 :pcs-gap 0 ) (Tic-Orbit :proposal-id 16042 :visit-id "02" :orbit-number 2 :pcs-time 302 :si-vis-utilization 2578 :al-overhead-at-end 0 :internal-dur-at-end 709 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3145 :pcs-gap 0 ) true 2 0 Timing link suitability includes constraints ([Sequence (01 02 03) within 7.0 days]) The scheduling data was generated by CASM 28.0. CASM was run in Phase II mode. /private/var/folders/9d/znlr3gj56k5gg7kstwq1rs1w0000gn/T/OPVisit13593653367759206414.xml (Tic-Visit :proposal-id 16042 :visit-id "03" :proposal-version -1 :trans-version "20191203" :date "23-Jan-2020 22:25:13.0" :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 1440736 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 16042 :visit-id "03" :obset-id "03" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 16042 :visit-id "03" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2772 :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 3145 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 28.0. CASM was run in Phase II mode. /private/var/folders/9d/znlr3gj56k5gg7kstwq1rs1w0000gn/T/OPVisit2410028541857018526.xml (Tic-Visit :proposal-id 16042 :visit-id "04" :proposal-version -1 :trans-version "20191203" :date "23-Jan-2020 22:25:14.0" :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 1440736 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 16042 :visit-id "04" :obset-id "04" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 16042 :visit-id "04" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2772 :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 3145 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 28.0. CASM was run in Phase II mode. /private/var/folders/9d/znlr3gj56k5gg7kstwq1rs1w0000gn/T/OPVisit906647686411557295.xml (Tic-Visit :proposal-id 16042 :visit-id "05" :proposal-version -1 :trans-version "20191203" :date "23-Jan-2020 22:25:15.0" :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 1440736 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 16042 :visit-id "05" :obset-id "05" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 16042 :visit-id "05" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2772 :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 3145 :pcs-gap 0 ) true 1 0