17458( 2) - 13-Sep-2023 15:17:19 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 17458 Version: 2 Check-in Time: 13-Sep-2023 15:17:19 STScI Edit Number: 0 Title Spatially Resolving the Baryon Cycle at z~2-3 ------------------------------------------------------------------------------------ Type Cycle GO 31 ------------------------------------------------------------------------------------ Investigators Contact? PI: Prof. Dawn K. Erb University of Wisconsin - Milwaukee Y CoI: Dr. Matthew Auger University of Cambridge N CoI: Dr. Danielle Berg University of Texas at Austin N CoI: Dr. Annalisa Citro University of Minnesota - Twin Cities N CoI: Dr. Bethan Lesley James Space Telescope Science Institute - ESA - N JWST CoI: Prof. Max Pettini University of Cambridge N ------------------------------------------------------------------------------------ Abstract Galactic outflows powered by star formation are a key driver of the baryon cycle, regulating star formation in galaxies and the gaseous content of the circumgalactic medium across cosmic time. We propose to combine high resolution, spatially resolved stellar population measurements from broadband HST imaging with spatially resolved measurements of gas flows from the Keck Cosmic Web Imager (KCWI; all data is already in hand), in order to assess the relationships between star-formation-driven outflows, galactic structure and stellar populations at the peak epoch of star formation. Our sample consists of ten gravitationally lensed galaxies at z~2-3, including some of the brightest lensed galaxies known. We have already obtained and analyzed the necessary HST imaging for three objects in the sample, and this combined archival + GO proposal completes the wavelength coverage with five orbits of new WFC3 imaging and extensive leverage of the archive for the remaining galaxies. The exquisite spatial resolution of HST combined with both the magnification of gravitational lensing and the power of Keck to probe the rest-frame UV will provide important new constraints on the baryon cycle, enabling us to discriminate between local outflows that depend on the properties of individual star-forming regions and global outflows that cover the entire source. The proposed new observations will also increase the legacy value of the existing data for these template galaxies. ------------------------------------------------------------------------------------ Observations Description ------------------------ The goal of this proposal is to use WFC3-UVIS/IR to obtain both broadband imaging of four gravitationally lensed galaxies. The program consists of 5 orbits, with each orbit observing with either the UVIS or IR instrument. When the IR instrument is used, observations in two filters will be obtained. We will use the UVIS-C1K1C-CTE aperture for the WFC3-UVIS F606W and F814W observations. We will employ the UVIS-DITHER-BOX pattern in order to enable rejection of cosmic rays and detector artifacts. For the F814W observations the ETC predicts 19 background e- for a 596s exposure, and we therefore add FLASH=1 to reach the recommended level of 20. Note that this differs from the APT 17458( 2) - 13-Sep-2023 15:17:19 - [ 2] background prediction, which is lower and therefore recommends more FLASH. As advised by the APT warning, we use the ETC predictions. We will also use a four-point box dither for the IR observations in F125W and F160W. Both filters will be observed in the same orbit, and we employ the SPARS25 sampling sequence to maximise exposure times. Impacts of reduced gyro operations on this program are relatively minimal, since this is a short and simple imaging program with no orient or timing constraints and one target per orbit. ------------------------------------------------------------------------------------ 17458( 2) - 13-Sep-2023 15:17:19 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 J0201+3228 GALAXY, GRAVITATIONAL RA=02H01M21.3900S, J2000 V = 20.5 LENS DEC=+32D28'29.70" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 2 J0918+5104 GALAXY, GRAVITATIONAL RA=09H18M59.2100S, J2000 V = 20.5 LENS DEC=+51D04'52.60" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 3 J1429+1202 GALAXY, GRAVITATIONAL RA=14H29M54.8000S, J2000 V = 20.5 LENS DEC=+12D02'35.60" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 4 J1514+3636 GALAXY, GRAVITATIONAL RA=15H14M22.2700S, J2000 V = 20.5 LENS DEC=+36D36'25.20" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 17458( 2) - 13-Sep-2023 15:17:19 - [ 4] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-UVIS-DITHER-BOX Pattern_Purpose DITHER Number_Of_Points 4 Point_Spacing 0.173 Line_Spacing 0.112 Coordinate_Frame POS-TARG Pattern_Orient 23.884 Angle_Between_Sides 81.785 Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 2 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-IR-DITHER-BOX-MIN Pattern_Purpose DITHER Number_Of_Points 4 Point_Spacing 0.572 Line_Spacing 0.365 Coordinate_Frame POS-TARG Pattern_Orient 18.528 Angle_Between_Sides 74.653 Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ 17458( 2) - 13-Sep-2023 15:17:19 - [ 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 J0201+3228 WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=1 1 590 S PATTERN 1 1 S 1C-CTE see below (2372 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 | ------------------------------------------------------------------------------------------------------------------------------------ J0201+3228 1 WFC3/UVI ACCUM UVIS2-C1 F814W 1 none none none 1 593.0 S S K1C-CTE J0201+3228 1 WFC3/UVI ACCUM UVIS2-C1 F814W 2 none none none 1 593.0 S S K1C-CTE J0201+3228 1 WFC3/UVI ACCUM UVIS2-C1 F814W 3 none none none 1 593.0 S S K1C-CTE J0201+3228 1 WFC3/UVI ACCUM UVIS2-C1 F814W 4 none none none 1 593.0 S S K1C-CTE 17458( 2) - 13-Sep-2023 15:17:19 - [ 6] 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 J0201+3228 WFC3/IR MULTIAC IR-FIX F125W NSAMP=12, SAMP-SEQ=SPARS25 1 DEF PATTERN 2 1 CUM (1111.752 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 J0201+3228 WFC3/IR MULTIAC IR-FIX F160W NSAMP=12, SAMP-SEQ=SPARS25 1 DEF PATTERN 2 2 CUM (1111.752 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 | ------------------------------------------------------------------------------------------------------------------------------------ J0201+3228 1 WFC3/IR MULTIAC IR-FIX F125W 1 none none none 1 N/A CUM J0201+3228 1 WFC3/IR MULTIAC IR-FIX F125W 2 none none none 1 N/A CUM J0201+3228 1 WFC3/IR MULTIAC IR-FIX F125W 3 none none none 1 N/A CUM J0201+3228 1 WFC3/IR MULTIAC IR-FIX F125W 4 none none none 1 N/A CUM J0201+3228 2 WFC3/IR MULTIAC IR-FIX F160W 1 none none none 1 N/A CUM J0201+3228 2 WFC3/IR MULTIAC IR-FIX F160W 2 none none none 1 N/A CUM J0201+3228 2 WFC3/IR MULTIAC IR-FIX F160W 3 none none none 1 N/A CUM J0201+3228 2 WFC3/IR MULTIAC IR-FIX F160W 4 none none none 1 N/A CUM 17458( 2) - 13-Sep-2023 15:17:19 - [ 7] Visit: 03 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 J0918+5104 WFC3/IR MULTIAC IR-FIX F125W NSAMP=13, SAMP-SEQ=SPARS25 1 DEF PATTERN 2 1 CUM (1211.754 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 J0918+5104 WFC3/IR MULTIAC IR-FIX F160W NSAMP=13, SAMP-SEQ=SPARS25 1 DEF PATTERN 2 2 CUM (1211.754 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 | ------------------------------------------------------------------------------------------------------------------------------------ J0918+5104 1 WFC3/IR MULTIAC IR-FIX F125W 1 none none none 1 N/A CUM J0918+5104 1 WFC3/IR MULTIAC IR-FIX F125W 2 none none none 1 N/A CUM J0918+5104 1 WFC3/IR MULTIAC IR-FIX F125W 3 none none none 1 N/A CUM J0918+5104 1 WFC3/IR MULTIAC IR-FIX F125W 4 none none none 1 N/A CUM J0918+5104 2 WFC3/IR MULTIAC IR-FIX F160W 1 none none none 1 N/A CUM J0918+5104 2 WFC3/IR MULTIAC IR-FIX F160W 2 none none none 1 N/A CUM J0918+5104 2 WFC3/IR MULTIAC IR-FIX F160W 3 none none none 1 N/A CUM J0918+5104 2 WFC3/IR MULTIAC IR-FIX F160W 4 none none none 1 N/A CUM 17458( 2) - 13-Sep-2023 15:17:19 - [ 8] Visit: 04 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 J1429+1202 WFC3/UVI ACCUM UVIS2-C1K F606W 1 596 S PATTERN 1 1 S 1C-CTE see below (2360 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 | ------------------------------------------------------------------------------------------------------------------------------------ J1429+1202 1 WFC3/UVI ACCUM UVIS2-C1 F606W 1 none none none 1 590.0 S S K1C-CTE J1429+1202 1 WFC3/UVI ACCUM UVIS2-C1 F606W 2 none none none 1 590.0 S S K1C-CTE J1429+1202 1 WFC3/UVI ACCUM UVIS2-C1 F606W 3 none none none 1 590.0 S S K1C-CTE J1429+1202 1 WFC3/UVI ACCUM UVIS2-C1 F606W 4 none none none 1 590.0 S S K1C-CTE 17458( 2) - 13-Sep-2023 15:17:19 - [ 9] Visit: 05 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 J1514+3636 WFC3/IR MULTIAC IR-FIX F125W NSAMP=12, SAMP-SEQ=SPARS25 1 DEF PATTERN 2 1 CUM (1111.752 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 J1514+3636 WFC3/IR MULTIAC IR-FIX F160W NSAMP=12, SAMP-SEQ=SPARS25 1 DEF PATTERN 2 2 CUM (1111.752 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 | ------------------------------------------------------------------------------------------------------------------------------------ J1514+3636 1 WFC3/IR MULTIAC IR-FIX F125W 1 none none none 1 N/A CUM J1514+3636 1 WFC3/IR MULTIAC IR-FIX F125W 2 none none none 1 N/A CUM J1514+3636 1 WFC3/IR MULTIAC IR-FIX F125W 3 none none none 1 N/A CUM J1514+3636 1 WFC3/IR MULTIAC IR-FIX F125W 4 none none none 1 N/A CUM J1514+3636 2 WFC3/IR MULTIAC IR-FIX F160W 1 none none none 1 N/A CUM J1514+3636 2 WFC3/IR MULTIAC IR-FIX F160W 2 none none none 1 N/A CUM J1514+3636 2 WFC3/IR MULTIAC IR-FIX F160W 3 none none none 1 N/A CUM J1514+3636 2 WFC3/IR MULTIAC IR-FIX F160W 4 none none none 1 N/A CUM 17458( 2) - 13-Sep-2023 15:17:19 - [ 10] Summary Form for Proposal 17458 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures IR-FIX, UVIS2-C1K1C-CTE ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/IR, WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, MULTIACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters FLASH=1, NSAMP=12, NSAMP=13, SAMP-SEQ=SPARS25 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements PATTERN 1 1, PATTERN 2 1, PATTERN 2 2 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F125W, F160W, F606W, F814W ------------------------------------------------------------------------------------------------------------------------------------ Target Names J0201+3228, J0918+5104, J1429+1202, J1514+3636 ------------------------------------------------------------------------------------------------------------------------------------