Unsupported characters were found in Abstract and replaced with |*| Proposal PDF Attachment is a required field. 0 Thank you for all your support 2140758383 ----- Attempting Submission 1 (Fri Jul 28 01:13:45 GMT 2023) ----- Revealing the progenitor of the dirty fireball gamma-ray burst AT 2023lcr through its supernova component AT2023lcr is a transient at redshift 1.0272 with multi-wavelength observations consistent with an on-axis gamma-ray burst (GRB) afterglow with narrow jet. However, no gamma-ray prompt emission was detected in the direction of the transient making it the best dirty fireball candidate observed to date. Dirty fireballs are GRB with sub-relativistic jet unable to create the typical bright flash of gamma-ray radiation, known as GRB prompt emission, seen in typical GRBs. We propose using JWST's NIRCam and NIRSpec as well as HST's NIR camera, to study photometrically and spectroscopically the supernova (SN) component associated to this rare GRB case confirming its collapsar nature, with a total of 4.75 hours of JWST observations and 3 orbits of HST observations. The relatively high-redshift of this target makes the expected SN peak at around 1.2-1.4 microns. Additionally, the expected magnitudes of the SN component fall below the limits for ground-based telescopes, making JWST and HST uniquely suited for this detailed study. The SN spectral observations will reveal crucial information regarding the progenitor and its circumstellar environment. These data will allow us to determine, for the first time, if dirty fireballs come from progenitors similar to typical GRBs, improving our understanding of the role played by mildly relativistic jets during stellar collapse and how these rare cases fit in the full diversity of stellar explosions. TBD The members of the team have large experience analysing, modelling and publishing JWST and HST data from gamma-ray bursts and associated compents such as kilonovae and supernovae. The team consists of a mixed group of observationallis and theoretical experts on the field. Stellar Physics and Stellar Types 0 false SUPPORTED STAR GAMMA RAY BURSTER SUPERNOVA NO We do not have a proper V-magnitude estimation of the brightness, however we have good J-band (AB) estimates. During the proposal we consider a worse case scenario where the expected magnitudes of the source would be 26.2, 26.57 and 26.98 for each epoch. Based on recent observations we could expect up to 1 magnitude brighter than this. J2000 J2000 The scheduling data was generated by CASM 31.0. CASM was run in Phase I mode. WFC3/IR Imaging No No F125W WFC3/IR Imaging No No F160W The scheduling data was generated by CASM 31.0. CASM was run in Phase I mode. WFC3/IR Imaging No No F125W WFC3/IR Imaging No No F160W The scheduling data was generated by CASM 31.0. CASM was run in Phase I mode. WFC3/IR Imaging No No F125W WFC3/IR Imaging No No F160W POS-TARG DITHER 0.605 LINE false false 3 41.788 WFC3-IR-DITHER-LINE-3PT 1 false /Users/acarrillo/Library/CloudStorage/GoogleDrive-antonio.martin-carrillo@ucd.ie/My Drive/workspace/at2023lcr/ZTF23aaoohpy/OP-cache/17396-v01.xml Timing link suitability includes constraints ([02 After 01 by 7.0 to 9.0 days]) The scheduling data was generated by CASM 31.0. CASM was run in Phase II mode. (Tic-Visit :proposal-id 17396 :visit-id "01" :proposal-version -1 :trans-version "20230418" :date "28-Jul-2023 03:07:45.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1044528 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 17396 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 17396 :visit-id "01" :orbit-number 1 :pcs-time 383 :si-vis-utilization 2770 :al-overhead-at-end 0 :internal-dur-at-end 614 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3165 :pcs-gap 0 ) true 1 0 /Users/acarrillo/Library/CloudStorage/GoogleDrive-antonio.martin-carrillo@ucd.ie/My Drive/workspace/at2023lcr/ZTF23aaoohpy/OP-cache/17396-v02.xml Timing link suitability includes constraints ([02 After 01 by 7.0 to 9.0 days] [03 After 02 by 7.0 to 9.0 days]) The scheduling data was generated by CASM 31.0. CASM was run in Phase II mode. (Tic-Visit :proposal-id 17396 :visit-id "02" :proposal-version -1 :trans-version "20230418" :date "28-Jul-2023 03:07:46.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1044528 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 17396 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 17396 :visit-id "02" :orbit-number 1 :pcs-time 383 :si-vis-utilization 2770 :al-overhead-at-end 0 :internal-dur-at-end 614 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3165 :pcs-gap 0 ) true 1 0 /Users/acarrillo/Library/CloudStorage/GoogleDrive-antonio.martin-carrillo@ucd.ie/My Drive/workspace/at2023lcr/ZTF23aaoohpy/OP-cache/17396-v03.xml Timing link suitability includes constraints ([03 After 02 by 7.0 to 9.0 days]) The scheduling data was generated by CASM 31.0. CASM was run in Phase II mode. (Tic-Visit :proposal-id 17396 :visit-id "03" :proposal-version -1 :trans-version "20230418" :date "28-Jul-2023 03:07:46.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1044528 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 17396 :visit-id "03" :obset-id "03" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 17396 :visit-id "03" :orbit-number 1 :pcs-time 383 :si-vis-utilization 2770 :al-overhead-at-end 0 :internal-dur-at-end 614 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3165 :pcs-gap 0 ) true 1 0