0 Assigned ID: 87 ----- Attempting Submission 1 (Tue Apr 04 03:22:47 GMT 2017) ----- HST Phase I Proposal 87 (draft.apt) successfully submitted. Receipt: # 87-1 ----- Attempting Submission 2 (Thu Apr 06 07:44:22 GMT 2017) ----- HST Phase I Proposal 87 (draft.apt.2017_04_04_08_02.aptbackup) successfully submitted. Receipt: # 87-2 ----- Attempting Submission 3 (Thu Apr 06 07:56:08 GMT 2017) ----- HST Phase I Proposal 87 (draft.apt.2017_04_04_08_02.aptbackup) successfully submitted. Receipt: # 87-3 ----- Attempting Submission 4 (Thu Apr 06 12:54:33 GMT 2017) ----- In this re-submission (May 24 2018), the TA exposure times of visits 3, 4, and 5 were modified following the recommendations of Bethan James. For visit 4, we now use MIRRORA, following Bethan James's advice. In this re-submission (March 17 2018), the TA exposure time was increased to 2.6 s. This re-submission adds uncertainties to the RA and DEC positions. I have updated the TA exposure time for visit 6. Five of our eight targets are duplications which are justified by the acquisition of LyA for the first time for all repeated targets. For those five targets, we use the previous COS coordinates, as we want the same pointings. For targets without previous COS observations, we use the coordinates of ULXs in Tab. 3 of Preswitch+13, when available, as this has proven successful in HST PID 14679, or SDSS coordinates. For targets 5 and 8, we have verified the coordinates using WFC3 UVIS images. 1911719827 ----- Attempting Submission 1 (Thu Jul 20 04:20:09 GMT 2017) ----- HST Phase II Proposal 15220 (p2.apt.2017_07_20_01_59.aptbackup.2017_07_20_02_10.aptbackup.2017_07_20_02_11.aptbackup) successfully submitted. Receipt: # 15220-1 ----- Attempting Submission 2 (Thu Jul 20 16:51:25 GMT 2017) ----- HST Phase II Proposal 15220 (p2.apt.2017_07_20_01_59.aptbackup.2017_07_20_02_10.aptbackup.2017_07_20_02_11.aptbackup.2017_07_20_04_25.aptbackup.2017_07_20_04_32.aptbackup) successfully submitted. Receipt: # 15220-2 ----- Attempting Submission 3 (Thu Feb 01 23:11:12 GMT 2018) ----- ----- Attempting Submission 5 (Wed Mar 07 20:53:49 GMT 2018) ----- ----- Attempting Submission 6 (Tue Mar 20 21:04:44 GMT 2018) ----- ----- Attempting Submission 7 (Fri May 25 04:08:01 GMT 2018) ----- Stars and gas in the most metal-deficient galaxies in the Universe. Improving our understanding of star formation at low metallicity is of large relevance for a variety of fields in astrophysics since it relates to multiple topical questions. These range from understanding the properties of galaxies that contributed to cosmic reionization to the evolution of metal poor massive stars that give rise to the formation of heavy binary black holes. Crucial are observational constraints for the theoretical predictions, which can be obtained from rest-frame UV spectra of local star-forming dwarf galaxies with ionized-gas oxygen abundances at the low-metallicity threshold of the nearby Universe. While samples of UV spectra exist for galaxies in the metallicity range above 1/20 solar, only two useful spectra covering from H I Lyman-alpha (LyA, 1216 Ang) to C III] 1909 are available at lower metallicites. We propose COS G140L observations of eight extremely-metal poor galaxies (XMPGs) with He II emission that will: i) provide three more spectra with 12+log(O/H)=<7.4 (suitable targets at such low Z are hard to find), and ii) leverage existing WFC3 and Chandra images which are useful for discrimintating among different sources of ionization. Combining this dataset with existing spectra at similar and higher metallicity will allow us to address three questions: 1) How does metallicity determine galaxy properties?, 2) Is narrow He II emission a good tracer of peculiar massive stars?, and 3) Can we probe star-formation at high redshift with UV lines other than LyA? Our study will provide valuable clues for interpreting rest-frame UV spectra of high-z galaxies that will challenge our understanding of star formation at low Z. We will use COS for our obsevations. Target acquisition. We will acquire de the targets via acq/image exposures of bandpass = 1700 - 3200 Ang. and pixel-scale=0.024" / pixel, using the NUV channel, PSA, and either mirror A or B, depending on the target's brightness. We require S/N = 5. Spectroscopy. We request G140L spectroscopy with cenwave = 1105 in order to cover the observed-frame wavelength range ~1121 to ~2148 Ang. at a spectral resolution of FWHM = 0.82 Ang. or 150 km/s at 1640 Ang. We plan to use: four focal plane positions in order to ensure the highest possible SNR; the flash = yes setting, and the time-tag mode. Orbits. We request one pointing per target. The number of orbits is driven by the requirement that SNR = 5 at 1640 * (1 + z), which corresponds to the observed wavelength of the He II 1640 line. This amounts to 9 orbits of HST. For the four targets with available G140L or G160M data, we calculate the number of orbits based on these data. For the rest of targets, we use a starburst99 (s99) model spectrum (SSP, 3 Myr, Z=0.001, no-rotation, high-mass loss) normalized to the AB magnitude in the U-band of SDSS DR12, or if available, the NUV AB magnitude of GALEX. The AB magnitudes correspond to similar pointings and apertures than COS. To each s99 model, we add a He II 1640 emission line with 10 times the reddening-corrected flux measured for the He II 4686 emission line using SDSS DR12 data. We then apply to s99 models the redshift and foreground reddening of the target. We use our spectra and standard background levels as input to the target acquisition and spectroscopic ETCs. For each target, the number of orbits equals the sum of the science exposure time, guide star + target acquisition times, and overhead time. This number takes into consideration the visibility times given in table 6.1 of HST's primer, which depend on the declination of the targets. In addition, for the first orbit of each visit, it includes: 6 min of guide star acquisition + 3 min of image target acquisition + 5 min of overhead for the first science exposure = 840 s. For subsequent orbits in the visit it includes: 4 min of guide star re-acquisition + 2 min for science exposures = 360 s. Galaxies and the IGM Galaxies and the IGM 6 false false true false false false false SUPPORTED GALAXY DWARF COMPACT STARBURST NO We give the same coordinates as for the COS G140L observations of PID 13312. GALEXJ104457.8+035313 J2000 J2000 F1500 (COS) = 1.5e-15 erg/s/cm2 GALAXY DWARF COMPACT STARBURST NO We give the same coordinates as for the COS G160M observations of PID 14168. RC2-A1228+12 GALEXJ123048.6+120243 J2000 J2000 F1650 (COS) = 1.5e-15 erg/s/cm2 GALAXY DWARF COMPACT NO We give the same coordinates as for the COS G160M observations of PID 14679. SBS-1129+576 J2000 J2000 NUV (GALEX) AB = 17.29 GALAXY DWARF COMPACT STARBURST NO We give SDSS coordinates SBS-0940+544 GALEXJ094416.9+541129 J2000 J2000 U (SLOAN) AB = 19.41 GALAXY DWARF COMPACT STARBURST NO We give coordinates of the ULX in Tab.3 of Preswitch+13. We verified the coordinates on WFC3 images. RC2-A1116+51 GALEXASC-J111934.25+513012.2 J2000 J2000 U (SLOAN) AB = 17.18 GALAXY DWARF COMPACT NO We give the same coordinates as for the COS G140L observations of PID 13312. SHOC-357 J2000 J2000 F1500 (COS) =0.5e-15 erg/s/cm2 GALAXY DWARF COMPACT STARBURST NO We give the same coordinates as for the COS G160M observations of PID 14120. KUG-1013+381 GALEX-J101624.4+375445 J2000 J2000 F1680 (COS) = 0.5e-14 erg/s/cm2 GALAXY DWARF COMPACT NO This object was generated by the targetselector and retrieved from the GALEX database. GALEX-J223036.8-000636 J2000 J2000 NUV (GALEX) AB = 18.59 COS/FUV Spectroscopic No No G140L 1105 COS/FUV Spectroscopic No No G140L 1105 COS/FUV Spectroscopic No No G140L 1105 COS/FUV Spectroscopic No No G140L 1105 COS/FUV Spectroscopic No No G140L 1105 COS/FUV Spectroscopic No No G140L 1105 COS/FUV Spectroscopic No No G140L 1105 COS/FUV Spectroscopic No No G140L 1105 /private/var/folders/x8/7f2vrd511t1_btfhlffzz3h80000gn/T/OPVisit4157843809776305812.xml The scheduling data was generated by CASM 26.0. CASM was run in Phase II mode. 1522656293000 94.0 (Tic-Visit :proposal-id 15220 :visit-id "01" :proposal-version -1 :trans-version "20180409" :date "24-May-2018 21:03:03.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 52416 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15220 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15220 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2863 :al-overhead-at-end 0 :internal-dur-at-end 331 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3202 :pcs-gap 0 ) true 1 0 /private/var/folders/x8/7f2vrd511t1_btfhlffzz3h80000gn/T/OPVisit578768962746294681.xml The scheduling data was generated by CASM 26.0. CASM was run in Phase II mode. 1524710664000 121.23075091641022 (Tic-Visit :proposal-id 15220 :visit-id "02" :proposal-version -1 :trans-version "20180409" :date "24-May-2018 21:03:04.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 52416 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15220 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15220 :visit-id "02" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2869 :al-overhead-at-end 0 :internal-dur-at-end 331 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3209 :pcs-gap 0 ) true 1 0 /private/var/folders/x8/7f2vrd511t1_btfhlffzz3h80000gn/T/OPVisit7990798240392483684.xml The scheduling data was generated by CASM 26.0. CASM was run in Phase II mode. (Tic-Visit :proposal-id 15220 :visit-id "03" :proposal-version -1 :trans-version "20180409" :date "24-May-2018 21:03:06.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 87168 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15220 :visit-id "03" :obset-id "03" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15220 :visit-id "03" :orbit-number 1 :pcs-time 333 :si-vis-utilization 3113 :al-overhead-at-end 0 :internal-dur-at-end 341 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3449 :pcs-gap 0 ) true 1 0 /private/var/folders/x8/7f2vrd511t1_btfhlffzz3h80000gn/T/OPVisit1292739826488661418.xml The scheduling data was generated by CASM 26.0. CASM was run in Phase II mode. (Tic-Visit :proposal-id 15220 :visit-id "04" :proposal-version -1 :trans-version "20180409" :date "24-May-2018 21:03:08.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 52416 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15220 :visit-id "04" :obset-id "04" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15220 :visit-id "04" :orbit-number 1 :pcs-time 333 :si-vis-utilization 3059 :al-overhead-at-end 0 :internal-dur-at-end 331 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3393 :pcs-gap 0 ) true 1 0 /private/var/folders/x8/7f2vrd511t1_btfhlffzz3h80000gn/T/OPVisit1396945949614296049.xml The scheduling data was generated by CASM 26.0. CASM was run in Phase II mode. (Tic-Visit :proposal-id 15220 :visit-id "05" :proposal-version -1 :trans-version "20180409" :date "24-May-2018 21:03:09.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 87168 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15220 :visit-id "05" :obset-id "05" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15220 :visit-id "05" :orbit-number 1 :pcs-time 333 :si-vis-utilization 3057 :al-overhead-at-end 0 :internal-dur-at-end 341 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3393 :pcs-gap 0 ) true 1 0 /private/var/folders/x8/7f2vrd511t1_btfhlffzz3h80000gn/T/OPVisit8707632663546970907.xml The scheduling data was generated by CASM 26.0. CASM was run in Phase II mode. 1526323858000 114.99273362396337 (Tic-Visit :proposal-id 15220 :visit-id "06" :proposal-version -1 :trans-version "20180409" :date "24-May-2018 21:03:11.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 52416 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15220 :visit-id "06" :obset-id "06" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15220 :visit-id "06" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2867 :al-overhead-at-end 0 :internal-dur-at-end 38 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3202 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15220 :visit-id "06" :orbit-number 2 :pcs-time 222 :si-vis-utilization 2979 :al-overhead-at-end 0 :internal-dur-at-end 331 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3202 :pcs-gap 0 ) true 2 0 /private/var/folders/x8/7f2vrd511t1_btfhlffzz3h80000gn/T/OPVisit7235114238578094012.xml The scheduling data was generated by CASM 26.0. CASM was run in Phase II mode. 1521214255000 145.5089724683985 (Tic-Visit :proposal-id 15220 :visit-id "07" :proposal-version -1 :trans-version "20180409" :date "24-May-2018 21:03:13.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 52416 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15220 :visit-id "07" :obset-id "07" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15220 :visit-id "07" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2921 :al-overhead-at-end 0 :internal-dur-at-end 331 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3260 :pcs-gap 0 ) true 1 0 /private/var/folders/x8/7f2vrd511t1_btfhlffzz3h80000gn/T/OPVisit357696531512037825.xml The scheduling data was generated by CASM 26.0. CASM was run in Phase II mode. 1525061878000 253.07928795426795 (Tic-Visit :proposal-id 15220 :visit-id "08" :proposal-version -1 :trans-version "20180409" :date "24-May-2018 21:03:14.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 52416 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15220 :visit-id "08" :obset-id "08" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15220 :visit-id "08" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2867 :al-overhead-at-end 0 :internal-dur-at-end 331 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3202 :pcs-gap 0 ) true 1 0