15831( 2) - 19-Jul-2019 19:50:45 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 15831 Version: 2 Check-in Time: 19-Jul-2019 19:50:45 STScI Edit Number: 0 Title Measuring the Stellar Populations In a Strongly Lensed X-ray Emitting Dwarf Starburst at Cosmic Noon ------------------------------------------------------------------------------------ Type Cycle GO 27 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Matthew Bayliss University of Cincinnati Main Campus Y CoI: Prof. Michael D. Gladders University of Chicago N CoI: Prof. Keren Sharon University of Michigan N CoI: Dr. Guillaume Mahler University of Michigan N CoI: Dr. Haakon Dahle University of Oslo N CoI: Dr. T. Emil Rivera-Thorsen University of Oslo N CoI: Dr. Katherine E. Whitaker University of Connecticut N CoI: Prof. Michael A. McDonald Massachusetts Institute of Technology N CoI: Prof. Steven W. Allen Stanford University N CoI: Dr. Jane R. Rigby NASA Goddard Space Flight Center N CoI: Dr. Michael Florian NASA Goddard Space Flight Center N CoI: Mr. Gourav Khullar University of Chicago N ------------------------------------------------------------------------------------ Abstract We propose a pioneering study of the X-ray emission from star-forming stellar populations in a dwarf galaxy during the epoch of peak star-formation in the Universe (Cosmic Noon). Extreme, but short-lived, X-ray sources in young stellar populations can inject significant mechanical feedback into their local star--forming environments, and may even play a crucial role in clearing out the interstellar medium, allowing ionizing radiation to escape galaxies. Understanding these sources and the stellar populations that host them is an essential piece of accurately modeling star formation across cosmic history. The goal of this proposal is to take full advantage of an extraordinarily highly magnified X-ray emitting dwarf starburst galaxy to study the connection between star-formation, stellar populations, and HMXBs at Cosmic Noon. Doing so requires precision measurements of the continuum emission spanning the rest-frame optical spanning the 4000 angstrom break in this galaxy. Our proposed observations will allow us to constrain the rest-frame optical properties of the stellar populations in this galaxy. We will measure the stellar populations of two spatially resolved UV-bright star-forming clumps (one X-ray bright and one not) in a distant (z=1.52) strongly lensed X-ray emitting star-forming galaxy. This small program would, for the first time, extend our ability to perform spatially resolved studies of the X-ray emission from star-forming stellar populations beyond the local universe, out to Cosmic Noon. ------------------------------------------------------------------------------------ Observations Description ------------------------ The purpose of these observations is to obtain photometry in for WFC3/IR bands (F098M, F125W, F140W, and F160W) of the field containing a strongly lensed dwarf star-forming galaxy at z=1.52 that has an X-ray detection in existing Chandra data. The four WFC3/IR bands be combined with existing optical detections (ACS/WFC F475W and F775W data) to measure the spectral energy 15831( 2) - 19-Jul-2019 19:50:45 - [ 2] distribution between rest-frame ~1700-6700 angstroms for 1) the total integrated light from lensed galaxy, and 2) for individual, spatially resolved (due to the high lensing magnification) star-forming regions-one with the X-ray emission, one without-in the lensed galaxy. We will use the WFC3/IR photometry to constrain the properties of the stellar populations in the X-ray emitting dwarf galaxy as a whole (as it would be observed in a typical deep field survey), and of the individual star-forming clumps within the galaxy. The observations are designed primarily to yield good signal-to-noise detections of the individual star-forming clumps in each band. Following the scheduling instructions for Cycle 27, we have split the for orbits in this program into two separate visits of 2 orbits each. We have designed the two visits to be identical, so that each visit will, on its own, provide four dithered images (for good PSF reconstruction) in each of the four bands. This design ensures scientifically useful data even in the event that only one of the visits executes successfully. ------------------------------------------------------------------------------------ 15831( 2) - 19-Jul-2019 19:50:45 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 PHOENIX-XRAY GALAXY, GRAVITATIONAL RA=23H44M44.1000S, J2000 V = 24.3 -ARC-POS1 LENS, STARBURST DEC=-42D43'9.70" Reference Frame: Other: SIMBAD Extended: YES Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 0.0 0.0 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 2 PHOENIX-XRAY GALAXY, GRAVITATIONAL RA=23H44M44.1000S, J2000 V = 24.3 -ARC-POS2 LENS, STARBURST DEC=-42D43'4.00" Reference Frame: Other: SIMBAD Extended: YES Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 0.0 0.0 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 15831( 2) - 19-Jul-2019 19:50:45 - [ 4] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 3 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-IR-DITHER-LINE Pattern_Purpose DITHER Number_Of_Points 2 Point_Spacing 0.636 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 41.788 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ 15831( 2) - 19-Jul-2019 19:50:45 - [ 5] Visit: 01 Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 PHOENIX-XRA WFC3/IR MULTIAC IR-FIX F125W SAMP-SEQ=SPARS25, NSAMP=9 1 DEF PATTERN 3 1 Y-ARC-POS1 CUM (405.873 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 PHOENIX-XRA WFC3/IR MULTIAC IR-FIX F160W SAMP-SEQ=SPARS50, NSAMP=11 1 DEF PATTERN 3 2 Y-ARC-POS1 CUM (1005.874 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 PHOENIX-XRA WFC3/IR MULTIAC IR-FIX F140W SAMP-SEQ=SPARS25, NSAMP=10 1 DEF PATTERN 3 3 Y-ARC-POS1 CUM (455.874 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 PHOENIX-XRA WFC3/IR MULTIAC IR-FIX F098M SAMP-SEQ=SPARS25, NSAMP=12 1 DEF PATTERN 3 4 Y-ARC-POS1 CUM (555.876 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 PHOENIX-XRA WFC3/IR MULTIAC IR-FIX F098M SAMP-SEQ=SPARS25, NSAMP=12 1 DEF PATTERN 3 5 Y-ARC-POS2 CUM (555.876 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 PHOENIX-XRA WFC3/IR MULTIAC IR-FIX F160W SAMP-SEQ=SPARS50, NSAMP=11 1 DEF PATTERN 3 6 Y-ARC-POS2 CUM (1005.874 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 PHOENIX-XRA WFC3/IR MULTIAC IR-FIX F125W SAMP-SEQ=SPARS25, NSAMP=9 1 DEF PATTERN 3 7 Y-ARC-POS2 CUM (405.873 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 PHOENIX-XRA WFC3/IR MULTIAC IR-FIX F140W SAMP-SEQ=SPARS25, NSAMP=10 1 DEF PATTERN 3 8 Y-ARC-POS2 CUM (455.874 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ PHOENIX-XRAY-ARC-PO 1 WFC3/IR MULTIAC IR-FIX F125W 1 none none none 1 N/A S1 CUM PHOENIX-XRAY-ARC-PO 1 WFC3/IR MULTIAC IR-FIX F125W 2 none none none 1 N/A S1 CUM 15831( 2) - 19-Jul-2019 19:50:45 - [ 6] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ PHOENIX-XRAY-ARC-PO 2 WFC3/IR MULTIAC IR-FIX F160W 1 none none none 1 N/A S1 CUM PHOENIX-XRAY-ARC-PO 2 WFC3/IR MULTIAC IR-FIX F160W 2 none none none 1 N/A S1 CUM PHOENIX-XRAY-ARC-PO 3 WFC3/IR MULTIAC IR-FIX F140W 1 none none none 1 N/A S1 CUM PHOENIX-XRAY-ARC-PO 3 WFC3/IR MULTIAC IR-FIX F140W 2 none none none 1 N/A S1 CUM PHOENIX-XRAY-ARC-PO 4 WFC3/IR MULTIAC IR-FIX F098M 1 none none none 1 N/A S1 CUM PHOENIX-XRAY-ARC-PO 4 WFC3/IR MULTIAC IR-FIX F098M 2 none none none 1 N/A S1 CUM PHOENIX-XRAY-ARC-PO 5 WFC3/IR MULTIAC IR-FIX F098M 1 none none none 2 N/A S2 CUM PHOENIX-XRAY-ARC-PO 5 WFC3/IR MULTIAC IR-FIX F098M 2 none none none 2 N/A S2 CUM PHOENIX-XRAY-ARC-PO 6 WFC3/IR MULTIAC IR-FIX F160W 1 none none none 2 N/A S2 CUM PHOENIX-XRAY-ARC-PO 6 WFC3/IR MULTIAC IR-FIX F160W 2 none none none 2 N/A S2 CUM PHOENIX-XRAY-ARC-PO 7 WFC3/IR MULTIAC IR-FIX F125W 1 none none none 2 N/A S2 CUM PHOENIX-XRAY-ARC-PO 7 WFC3/IR MULTIAC IR-FIX F125W 2 none none none 2 N/A S2 CUM PHOENIX-XRAY-ARC-PO 8 WFC3/IR MULTIAC IR-FIX F140W 1 none none none 2 N/A S2 CUM PHOENIX-XRAY-ARC-PO 8 WFC3/IR MULTIAC IR-FIX F140W 2 none none none 2 N/A S2 CUM 15831( 2) - 19-Jul-2019 19:50:45 - [ 7] Visit: 02 Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 PHOENIX-XRA WFC3/IR MULTIAC IR-FIX F140W SAMP-SEQ=SPARS25, NSAMP=9 1 DEF PATTERN 3 1 Y-ARC-POS1 CUM (405.873 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 PHOENIX-XRA WFC3/IR MULTIAC IR-FIX F160W SAMP-SEQ=SPARS50, NSAMP=11 1 DEF PATTERN 3 2 Y-ARC-POS1 CUM (1005.874 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 PHOENIX-XRA WFC3/IR MULTIAC IR-FIX F125W SAMP-SEQ=SPARS25, NSAMP=10 1 DEF PATTERN 3 3 Y-ARC-POS1 CUM (455.874 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 PHOENIX-XRA WFC3/IR MULTIAC IR-FIX F098M SAMP-SEQ=SPARS25, NSAMP=12 1 DEF PATTERN 3 4 Y-ARC-POS1 CUM (555.876 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 PHOENIX-XRA WFC3/IR MULTIAC IR-FIX F098M SAMP-SEQ=SPARS25, NSAMP=12 1 DEF PATTERN 3 5 Y-ARC-POS2 CUM (555.876 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 PHOENIX-XRA WFC3/IR MULTIAC IR-FIX F160W SAMP-SEQ=SPARS50, NSAMP=11 1 DEF PATTERN 3 6 Y-ARC-POS2 CUM (1005.874 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 PHOENIX-XRA WFC3/IR MULTIAC IR-FIX F125W SAMP-SEQ=SPARS25, NSAMP=9 1 DEF PATTERN 3 7 Y-ARC-POS2 CUM (405.873 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 PHOENIX-XRA WFC3/IR MULTIAC IR-FIX F140W SAMP-SEQ=SPARS25, NSAMP=10 1 DEF PATTERN 3 8 Y-ARC-POS2 CUM (455.874 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ PHOENIX-XRAY-ARC-PO 1 WFC3/IR MULTIAC IR-FIX F140W 1 none none none 1 N/A S1 CUM PHOENIX-XRAY-ARC-PO 1 WFC3/IR MULTIAC IR-FIX F140W 2 none none none 1 N/A S1 CUM 15831( 2) - 19-Jul-2019 19:50:45 - [ 8] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ PHOENIX-XRAY-ARC-PO 2 WFC3/IR MULTIAC IR-FIX F160W 1 none none none 1 N/A S1 CUM PHOENIX-XRAY-ARC-PO 2 WFC3/IR MULTIAC IR-FIX F160W 2 none none none 1 N/A S1 CUM PHOENIX-XRAY-ARC-PO 3 WFC3/IR MULTIAC IR-FIX F125W 1 none none none 1 N/A S1 CUM PHOENIX-XRAY-ARC-PO 3 WFC3/IR MULTIAC IR-FIX F125W 2 none none none 1 N/A S1 CUM PHOENIX-XRAY-ARC-PO 4 WFC3/IR MULTIAC IR-FIX F098M 1 none none none 1 N/A S1 CUM PHOENIX-XRAY-ARC-PO 4 WFC3/IR MULTIAC IR-FIX F098M 2 none none none 1 N/A S1 CUM PHOENIX-XRAY-ARC-PO 5 WFC3/IR MULTIAC IR-FIX F098M 1 none none none 2 N/A S2 CUM PHOENIX-XRAY-ARC-PO 5 WFC3/IR MULTIAC IR-FIX F098M 2 none none none 2 N/A S2 CUM PHOENIX-XRAY-ARC-PO 6 WFC3/IR MULTIAC IR-FIX F160W 1 none none none 2 N/A S2 CUM PHOENIX-XRAY-ARC-PO 6 WFC3/IR MULTIAC IR-FIX F160W 2 none none none 2 N/A S2 CUM PHOENIX-XRAY-ARC-PO 7 WFC3/IR MULTIAC IR-FIX F125W 1 none none none 2 N/A S2 CUM PHOENIX-XRAY-ARC-PO 7 WFC3/IR MULTIAC IR-FIX F125W 2 none none none 2 N/A S2 CUM PHOENIX-XRAY-ARC-PO 8 WFC3/IR MULTIAC IR-FIX F140W 1 none none none 2 N/A S2 CUM PHOENIX-XRAY-ARC-PO 8 WFC3/IR MULTIAC IR-FIX F140W 2 none none none 2 N/A S2 CUM 15831( 2) - 19-Jul-2019 19:50:45 - [ 9] Summary Form for Proposal 15831 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures IR-FIX ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/IR ------------------------------------------------------------------------------------------------------------------------------------ Opmodes MULTIACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters NSAMP=10, NSAMP=11, NSAMP=12, NSAMP=9, SAMP-SEQ=SPARS25, SAMP-SEQ=SPARS50 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements PATTERN 3 1, PATTERN 3 2, PATTERN 3 3, PATTERN 3 4, PATTERN 3 5, PATTERN 3 6, PATTERN 3 7, PATTERN 3 8 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F098M, F125W, F140W, F160W ------------------------------------------------------------------------------------------------------------------------------------ Target Names PHOENIX-XRAY-ARC-POS1, PHOENIX-XRAY-ARC-POS2 ------------------------------------------------------------------------------------------------------------------------------------