0 Assigned ID: 1858 ----- Attempting Submission 1 (Fri Apr 09 09:07:51 GMT 2021) ----- HST Phase I Proposal 1858 successfully submitted. Receipt: # 1858-1 ----- Attempting Submission 2 (Fri Apr 09 22:50:26 GMT 2021) ----- This target is not used in this proposal. This target is not used in this proposal. This target is not used in this proposal. This target is not used in this proposal. The phase 1 proposal for this program uses the target of opportunity requirement, but this program has not specified the TARGET OF OPPORTUNITY RESPONSE TIME special requirement. Please add this special requirement to each target of opportunity visit. Illegal use of Generic Target or ANY target. See full description for details Illegal use of Generic Target or ANY target. See full description for details Illegal use of Generic Target or ANY target. See full description for details Illegal use of Generic Target or ANY target. See full description for details Exposure Time is a required field. Illegal use of Generic Target or ANY target. See full description for details Illegal use of Generic Target or ANY target. See full description for details Illegal use of Generic Target or ANY target. See full description for details Illegal use of Generic Target or ANY target. See full description for details Exposure Time is a required field. Illegal use of Generic Target or ANY target. See full description for details Illegal use of Generic Target or ANY target. See full description for details Illegal use of Generic Target or ANY target. See full description for details Illegal use of Generic Target or ANY target. See full description for details Illegal use of Generic Target or ANY target. See full description for details Exposure Time is a required field. Illegal use of Generic Target or ANY target. See full description for details Illegal use of Generic Target or ANY target. See full description for details Illegal use of Generic Target or ANY target. See full description for details Illegal use of Generic Target or ANY target. See full description for details Illegal use of Generic Target or ANY target. See full description for details Exposure Time is a required field. Illegal use of Generic Target or ANY target. See full description for details Illegal use of Generic Target or ANY target. See full description for details Illegal use of Generic Target or ANY target. See full description for details Illegal use of Generic Target or ANY target. See full description for details Illegal use of Generic Target or ANY target. See full description for details Exposure Time is a required field. Updated visit 05 for SN 2022uiv -890747657 ----- Attempting Submission 1 (Thu Jul 29 15:48:08 GMT 2021) ----- HST Phase II Proposal 16690 successfully submitted. Receipt: # 16690-1 ----- Attempting Submission 2 (Thu Jul 29 18:53:43 GMT 2021) ----- ----- Attempting Submission 3 (Mon Mar 14 01:52:21 GMT 2022) ----- HST Phase II Proposal 16690 successfully submitted. Receipt: # 16690-3 ----- Attempting Submission 4 (Tue Mar 15 17:35:45 GMT 2022) ----- HST Phase II Proposal 16690 successfully submitted. Receipt: # 16690-4 ----- Attempting Submission 5 (Tue Mar 15 18:43:36 GMT 2022) ----- HST Phase II Proposal 16690 successfully submitted. Receipt: # 16690-5 ----- Attempting Submission 6 (Tue Mar 15 20:44:34 GMT 2022) ----- ----- Attempting Submission 9 (Tue Mar 29 00:59:23 GMT 2022) ----- HST Phase II Proposal 16690 successfully submitted. Receipt: # 16690-9 ----- Attempting Submission 11 (Sat Apr 16 22:02:09 GMT 2022) ----- ----- Attempting Submission 12 (Tue Sep 20 18:51:50 GMT 2022) ----- These steps aren't necessary yet since this is a TOO program Measuring the Effect of Progenitor Metallicity on Type Ia Supernova Distance Estimates Despite using Type Ia supernovae (SN Ia) to precisely measure cosmological parameters, we still do not know basic facts about the progenitor systems and explosions. Theory suggests that SN Ia progenitor metallicity is correlated with peak luminosity, but not how quickly it fades, which we use to calibrate the luminosity and measure distances. This effect should lead to an increased Hubble scatter, reducing the precision with which we measure distances. If the mean progenitor metallicity changes with redshift or population, cosmological measurements such as the dark energy equation-of-state parameter and the Hubble constant could be biased. Models also indicate that changing progenitor metallicity will have little effect on the appearance of optical/NIR SN data, but significantly alter UV spectra. These data can only be obtained with HST. Previous HST observations of 2 "twin" SN (having nearly identical optical spectra and light-curve shapes) with different UV spectra and peak optical luminosities indicate progenitor metallicity differences consistent with models. To determine the overall impact of progenitor metallicity on cosmological measurements, we must increase the sample. The community now discovers ~20 SN Ia each year >2 weeks before peak. With the increased discovery rate of young SN, we can increase the sample of SN Ia with UV spectra near peak by 50% in a single Cycle. UV observations are critical to the understanding of SN Ia explosions and progenitors and constraining fundamental parameters such as the Hubble constant. This is our best opportunity to further our understanding of SN Ia while directly improving the utility of SN Ia for cosmology. There are 8 separate TOO targets, each will obtain a single spectrum. 4 targets will be bright enough for a single orbit, while half will require 2 orbits. Fast turn around is key, and we will work closely to speed this process up. Some tweaking to the visits will be required for each trigger. PI Foley and his team have led several previous HST programs to obtain UV spectra of Type Ia supernovae. Foley has published 59 journal articles using HST data, including 10 on this topic. Foley, Brown, Dimitriadis, Filippenko, Fox, Jones, Kirshner, Pan, Rojas-Bravo, Siebert, Taubenberger, and Wheeler are all established supernova observers. They will contribute observational resources from several observatories to this study. Roepke, Sim, and Wheeler are accomplished supernova theorists who will produce models for this study. Large Scale Structure of the Universe Stellar Populations and the Interstellar Medium 6 false true true false false false 0.45 true SUPPORTED EXT-STAR SUPERNOVA TYPE IA NO Rising SN Ia currently 17.0 J2000 EXT-STAR SUPERNOVA TYPE IA NO Rising SN Ia currently 19.7 J2000 EXT-STAR SUPERNOVA TYPE IA NO Rising SN Ia currently 15.0 J2000 EXT-STAR SUPERNOVA TYPE IA NO Rising SN Ia currently 17.6 J2000 EXT-STAR SUPERNOVA TYPE IA TOO EXT-STAR SUPERNOVA TYPE IA TOO EXT-STAR SUPERNOVA TYPE IA TOO EXT-STAR SUPERNOVA TYPE IA TOO EXT-STAR SUPERNOVA TYPE IA TOO EXT-STAR SUPERNOVA TYPE IA TOO EXT-STAR SUPERNOVA TYPE IA TOO EXT-STAR SUPERNOVA TYPE IA TOO STIS/NUV-MAMA Spectroscopic No No G230L 2376 STIS/CCD Spectroscopic No No G430L 4300 STIS/CCD Spectroscopic No No G750L 7751 STIS/NUV-MAMA Spectroscopic No No G230L 2376 STIS/CCD Spectroscopic No No G430L 4300 STIS/CCD Spectroscopic No No G750L 7751 STIS/NUV-MAMA Spectroscopic No No G230L 2376 STIS/CCD Spectroscopic No No G430L 4300 STIS/CCD Spectroscopic No No G750L 7751 STIS/NUV-MAMA Spectroscopic No No G230L 2376 STIS/CCD Spectroscopic No No G430L 4300 STIS/CCD Spectroscopic No No G750L 7751 STIS/NUV-MAMA Spectroscopic No No G230L 2376 STIS/CCD Spectroscopic No No G430L 4300 STIS/CCD Spectroscopic No No G750L 7751 STIS/NUV-MAMA Spectroscopic No No G230L 2376 STIS/CCD Spectroscopic No No G430L 4300 STIS/CCD Spectroscopic No No G750L 7751 STIS/NUV-MAMA Spectroscopic No No G230L 2376 STIS/CCD Spectroscopic No No G430L 4300 STIS/CCD Spectroscopic No No G750L 7751 STIS/NUV-MAMA Spectroscopic No No G230L 2376 STIS/CCD Spectroscopic No No G430L 4300 STIS/CCD Spectroscopic No No G750L 7751 The scheduling data was generated by CASM 30.1. CASM was run in Phase II mode. 1649777591000 166.0280617029007 (Tic-Visit :proposal-id 16690 :visit-id "01" :proposal-version -1 :trans-version "20211222" :date "28-Mar-2022 17:57:30.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "24" :si-bright-earth-limb-angle 20.0 :data-volume 234656 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 16690 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 16690 :visit-id "01" :orbit-number 1 :pcs-time 393 :si-vis-utilization 3018 :al-overhead-at-end 0 :internal-dur-at-end 680 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3411 :pcs-gap 0 ) false 1 0 The scheduling data was generated by CASM 30.1. CASM was run in Phase II mode. 1651457366000 137.4436305050986 (Tic-Visit :proposal-id 16690 :visit-id "02" :proposal-version -1 :trans-version "20211222" :date "16-Apr-2022 14:58:39.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "24" :si-bright-earth-limb-angle 20.0 :data-volume 234656 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 16690 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 16690 :visit-id "02" :orbit-number 1 :pcs-time 393 :si-vis-utilization 2756 :al-overhead-at-end 0 :internal-dur-at-end 680 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3149 :pcs-gap 0 ) false 1 0 false -1 -1 false -1 -1 The scheduling data was generated by CASM 30.3. CASM was run in Phase II mode. (Tic-Visit :proposal-id 16690 :visit-id "05" :proposal-version -1 :trans-version "20220516" :date "20-Sep-2022 14:30:46.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "24" :si-bright-earth-limb-angle 20.0 :data-volume 321648 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 16690 :visit-id "05" :obset-id "05" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 16690 :visit-id "05" :orbit-number 1 :pcs-time 393 :si-vis-utilization 2787 :al-overhead-at-end 0 :internal-dur-at-end 113 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3180 :pcs-gap 0 ) (Tic-Orbit :proposal-id 16690 :visit-id "05" :orbit-number 2 :pcs-time 392 :si-vis-utilization 2788 :al-overhead-at-end 0 :internal-dur-at-end 620 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3180 :pcs-gap 0 ) false 2 0 false -1 -1 false -1 -1 false -1 -1