Measuring the Effect of Progenitor Metallicity on Type Ia Supernova Distance Estimates

0 Assigned ID: 502 ----- Attempting Submission 1 (Fri Mar 06 15:14:41 GMT 2020) ----- HST Phase I Proposal 502 successfully submitted. Receipt: # 502-1 ----- Attempting Submission 2 (Sat Mar 07 00:41:54 GMT 2020) ----- 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. 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. This target is not used in this proposal. This target is not used in this proposal. This target is not used in this proposal. Updated coordinates of SN 2022aaiq -8723956 ----- Attempting Submission 1 (Mon Jun 22 17:23:00 GMT 2020) ----- ----- Attempting Submission 2 (Mon Oct 05 19:59:32 GMT 2020) ----- ----- Attempting Submission 3 (Tue Oct 06 16:57:16 GMT 2020) ----- ----- Attempting Submission 4 (Thu Oct 22 23:52:51 GMT 2020) ----- ----- Attempting Submission 5 (Mon Nov 09 16:51:41 GMT 2020) ----- ----- Attempting Submission 6 (Mon Jan 04 18:16:28 GMT 2021) ----- ----- Attempting Submission 7 (Tue Feb 23 01:01:42 GMT 2021) ----- Your proposal could not be saved. Submission aborted. ----- Attempting Submission 9 (Tue Feb 23 22:30:44 GMT 2021) ----- ----- Attempting Submission 10 (Thu Mar 18 20:14:23 GMT 2021) ----- ----- Attempting Submission 11 (Thu Apr 01 18:34:01 GMT 2021) ----- ----- Attempting Submission 12 (Fri Apr 02 20:38:55 GMT 2021) ----- ----- Attempting Submission 13 (Fri Apr 02 21:05:58 GMT 2021) ----- Your proposal could not be saved. Submission aborted. ----- Attempting Submission 14 (Mon Apr 05 15:30:04 GMT 2021) ----- ----- Attempting Submission 16 (Tue Apr 13 00:43:46 GMT 2021) ----- ----- Attempting Submission 17 (Tue Apr 13 18:55:21 GMT 2021) ----- HST Phase II Proposal 16238 successfully submitted. Receipt: # 16238-17 ----- Attempting Submission 18 (Tue Apr 13 21:23:40 GMT 2021) ----- HST Phase II Proposal 16238 successfully submitted. Receipt: # 16238-18 ----- Attempting Submission 19 (Fri Jun 11 20:34:53 GMT 2021) ----- ----- Attempting Submission 20 (Tue Jun 15 18:48:00 GMT 2021) ----- ----- Attempting Submission 21 (Fri Sep 24 15:40:51 GMT 2021) ----- ----- Attempting Submission 22 (Fri Sep 24 22:32:39 GMT 2021) ----- ----- Attempting Submission 23 (Mon Sep 27 22:36:47 GMT 2021) ----- ----- Attempting Submission 24 (Sun Nov 14 04:16:55 GMT 2021) ----- ----- Attempting Submission 25 (Mon Jun 13 21:34:43 GMT 2022) ----- HST Phase II Proposal 16238 successfully submitted. Receipt: # 16238-25 ----- Attempting Submission 26 (Tue Jun 14 21:55:31 GMT 2022) ----- ----- Attempting Submission 27 (Thu Nov 17 21:29:19 GMT 2022) ----- HST Phase II Proposal 16238 successfully submitted. Receipt: # 16238-27 ----- Attempting Submission 28 (Fri Nov 18 20:32:19 GMT 2022) ----- Overruns are for placeholder visits. Unused targets are generic placeholders now covered by real targets. 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 its 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 (and announces) ~20 SN Ia each year >2 weeks before peak. With the increased discovery rate of young SN, we can double the sample of SN Ia with UV spectra near peak 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 Physics and Stellar Types 6 false true true false false false 0.45 true SUPPORTED EXT-STAR SUPERNOVA TYPE IA NO Rising SN. J2000 EXT-STAR SUPERNOVA TYPE IA NO Rising SN Ia. J2000 EXT-STAR SUPERNOVA TYPE IA NO Rising SN Ia. J2000 EXT-STAR SUPERNOVA TYPE IA Currently r = 17.8 and rising very quickly. Should reach r ~ 14 mag at peak. This will be slightly fainter than previous targets (thus a 2-orbit allocation). J2000 EXT-STAR SUPERNOVA TYPE IA NO Rising SN Ia currently 15.9 mag J2000 EXT-STAR SUPERNOVA TYPE IA NO Rising SN Ia currently 15.9 mag J2000 EXT-STAR SUPERNOVA TYPE IA NO Rising SN Ia currently 18.1 mag J2000 EXT-STAR SUPERNOVA TYPE IA NO Rising SN Ia currently 13.2 mag J2000 EXT-STAR SUPERNOVA TYPE IA NO Rising SN Ia currently 17 mag J2000 EXT-STAR SUPERNOVA TYPE IA Rising SN Ia currently 15.6 mag J2000 EXT-STAR SUPERNOVA TYPE IA Rising SN Ia currently 18.0 mag J2000 EXT-STAR SUPERNOVA TYPE IA Rising SN Ia currently 16.0 mag 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 28.2. CASM was run in Phase II mode. 1609783841649 1603459937000 100.47802685613811 (Tic-Visit :proposal-id 16238 :visit-id "01" :proposal-version -1 :trans-version "20200619" :date "04-Jan-2021 10:10:41.0" :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 16238 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 16238 :visit-id "01" :orbit-number 1 :pcs-time 301 :si-vis-utilization 2626 :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 2927 :pcs-gap 0 ) false 1 0 The scheduling data was generated by CASM 28.2. CASM was run in Phase II mode. 1609783834985 1606611480000 79.5255175439462 (Tic-Visit :proposal-id 16238 :visit-id "02" :proposal-version -1 :trans-version "20200619" :date "04-Jan-2021 10:10:34.0" :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 16238 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 16238 :visit-id "02" :orbit-number 1 :pcs-time 301 :si-vis-utilization 2528 :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 2929 :pcs-gap 0 ) false 1 0 ToO The scheduling data was generated by CASM 28.2. CASM was run in Phase II mode. 1609784003953 1611183274000 275.14615247504753 (Tic-Visit :proposal-id 16238 :visit-id "03" :proposal-version -1 :trans-version "20200619" :date "04-Jan-2021 10:13:23.0" :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 16238 :visit-id "03" :obset-id "03" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 16238 :visit-id "03" :orbit-number 1 :pcs-time 301 :si-vis-utilization 2626 :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 2927 :pcs-gap 0 ) false 1 0 The scheduling data was generated by CASM 29.0. CASM was run in Phase II mode. 1617397447198 1618870223000 129.24 (Tic-Visit :proposal-id 16238 :visit-id "04" :proposal-version -1 :trans-version "20200619" :date "02-Apr-2021 14:04:07.0" :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 16238 :visit-id "04" :obset-id "04" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 16238 :visit-id "04" :orbit-number 1 :pcs-time 393 :si-vis-utilization 2529 :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 2922 :pcs-gap 0 ) false 1 0 ToO The scheduling data was generated by CASM 29.0. CASM was run in Phase II mode. 1614540211793 1615666801000 95.0 (Tic-Visit :proposal-id 16238 :visit-id "05" :proposal-version -1 :trans-version "20200619" :date "28-Feb-2021 14:23:31.0" :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 16238 :visit-id "05" :obset-id "05" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 16238 :visit-id "05" :orbit-number 1 :pcs-time 393 :si-vis-utilization 2524 :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 2918 :pcs-gap 0 ) (Tic-Orbit :proposal-id 16238 :visit-id "05" :orbit-number 2 :pcs-time 392 :si-vis-utilization 2525 :al-overhead-at-end 0 :internal-dur-at-end 660 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2918 :pcs-gap 0 ) false 2 0 ToO ).1 for 14th mag star yields a s/n ~50 Time to saturation is 15 seconds. The scheduling data was generated by CASM 29.0. CASM was run in Phase II mode. 1632344169440 1619571758000 122.95732879837487 (Tic-Visit :proposal-id 16238 :visit-id "06" :proposal-version -1 :trans-version "20210514" :date "22-Sep-2021 13:56:09.0" :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 16238 :visit-id "06" :obset-id "06" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 16238 :visit-id "06" :orbit-number 1 :pcs-time 393 :si-vis-utilization 2536 :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 2929 :pcs-gap 0 ) (Tic-Orbit :proposal-id 16238 :visit-id "06" :orbit-number 2 :pcs-time 392 :si-vis-utilization 2537 :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 2929 :pcs-gap 0 ) false 2 0 ToO ).1 for 14th mag star yields a s/n ~50 Time to saturation is 15 seconds. The scheduling data was generated by CASM 30.1. CASM was run in Phase II mode. 1655243632715 1657293142000 109.47630026519619 (Tic-Visit :proposal-id 16238 :visit-id "07" :proposal-version -1 :trans-version "20211222" :date "14-Jun-2022 14:53:52.0" :trans-errors '(:WARNINGS 0 :ERRORS 1 :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 16238 :visit-id "07" :obset-id "07" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 16238 :visit-id "07" :orbit-number 1 :pcs-time 393 :si-vis-utilization 2534 :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 2927 :pcs-gap 0 ) (Tic-Orbit :proposal-id 16238 :visit-id "07" :orbit-number 2 :pcs-time 392 :si-vis-utilization 2535 :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 2927 :pcs-gap 0 ) false 2 0 ToO ).1 for 14th mag star yields a s/n ~50 Time to saturation is 15 seconds. The scheduling data was generated by CASM 30.3. CASM was run in Phase II mode. 1668803318604 /private/var/folders/h2/k647pjbx2x54qcxj9q1xrvyr0005g7/T/OPVisit14003916171028487066.xml (Tic-Visit :proposal-id 16238 :visit-id "Z7" :proposal-version -1 :trans-version "20220630" :date "18-Nov-2022 15:28:19.0" :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 16238 :visit-id "Z7" :obset-id "Z7" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 16238 :visit-id "Z7" :orbit-number 1 :pcs-time 393 :si-vis-utilization 2557 :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 2950 :pcs-gap 0 ) (Tic-Orbit :proposal-id 16238 :visit-id "Z7" :orbit-number 2 :pcs-time 392 :si-vis-utilization 2558 :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 2950 :pcs-gap 0 ) true 2 0 ToO ).1 for 14th mag star yields a s/n ~50 Time to saturation is 15 seconds. The scheduling data was generated by CASM 29.2. CASM was run in Phase II mode. 1632782155709 1633952630000 90.0025894255291 (Tic-Visit :proposal-id 16238 :visit-id "08" :proposal-version -1 :trans-version "20210514" :date "27-Sep-2021 15:35:55.0" :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 16238 :visit-id "08" :obset-id "08" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 16238 :visit-id "08" :orbit-number 1 :pcs-time 393 :si-vis-utilization 2534 :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 2927 :pcs-gap 0 ) (Tic-Orbit :proposal-id 16238 :visit-id "08" :orbit-number 2 :pcs-time 392 :si-vis-utilization 2535 :al-overhead-at-end 0 :internal-dur-at-end 660 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2927 :pcs-gap 0 ) false 2 0 ToO ).1 for 14th mag star yields a s/n ~50 Time to saturation is 15 seconds. 1632782155709 (Tic-Visit :proposal-id 16238 :visit-id "08" :proposal-version -1 :trans-version "20210514" :date "27-Sep-2021 15:35:55.0" :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 16238 :visit-id "08" :obset-id "08" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 16238 :visit-id "08" :orbit-number 1 :pcs-time 393 :si-vis-utilization 2534 :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 2927 :pcs-gap 0 ) (Tic-Orbit :proposal-id 16238 :visit-id "08" :orbit-number 2 :pcs-time 392 :si-vis-utilization 2535 :al-overhead-at-end 0 :internal-dur-at-end 660 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2927 :pcs-gap 0 ) false 2 0 ToO ).1 for 14th mag star yields a s/n ~50 Time to saturation is 15 seconds.