15920( 4) - 07-Aug-2019 21:13:11 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 15920 Version: 4 Check-in Time: 07-Aug-2019 21:13:11 STScI Edit Number: 0 Title RELICS: Unveiling the Most Distant Lensed Arc at z~10 ------------------------------------------------------------------------------------ Type Cycle GO 27 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Brett Salmon Space Telescope Science Institute Y CoI: Dr. Dan Coe Space Telescope Science Institute - ESA Y CoI: Dr. Larry Bradley Space Telescope Science Institute Y CoI: Prof. Marusa Bradac University of California - Davis N CoI: Prof. Michele Trenti University of Melbourne N CoI: Prof. Pascal Oesch Observatoire de Geneve N CoI: Prof. Keren Sharon University of Michigan N CoI: Prof. Daniel P. Stark University of Arizona N CoI: Dr. Rachel Paterno-Mahler Claremont McKenna N CoI: Dr. Steve Rodney University of South Carolina Research N Foundation CoI: Dr. Adi Zitrin Ben Gurion University of the Negev N CoI: Dr. William Anthony Dawson Lawrence Livermore National Laboratory N CoI: Roberto Avila Space Telescope Science Institute N CoI: Ms. Sara Ogaz Space Telescope Science Institute N CoI: Mr. Austin Hoag University of California - Los Angeles N CoI: Prof. Brenda Louise Frye University of Arizona N CoI: Ramesh Mainali University of Arizona N CoI: Dr. Masami Ouchi University of Tokyo, Institute of Cosmic N Ray Research CoI: Victoria Strait University of California - Davis N CoI: Dr. Guillaume Mahler University of Michigan N CoI: Ana Acebron Ben Gurion University of the Negev N CoI: Dr. Takuya Hashimoto Osaka Sangyo University N CoI: Dr. Yoichi Tamura University of Tokyo, Institute of N Astronomy CoI: Prof. Akio Inoue Osaka Sangyo University N CoI: Dr. Erik Zackrisson Uppsala University N ------------------------------------------------------------------------------------ Abstract We propose 6 orbits of follow-up infrared imaging on one of the most exciting discoveries to come from the 188-orbit HST Treasury program RELICS: a candidate z~10 galaxy strongly lensed into a bright arc. Out of all of the existing HST and Spitzer imaging programs searching for distant galaxies, this z~10 candidate is unique by its large lensed size, offering the rare chance to resolve spatial structure in a galaxy just 500 Myr after the big bang. A recent ALMA search discovered a tentative 4-sigma detection of the [OIII] 88\micron\ fine structure line at z~10.2 (private communication), although deeper data are needed. However, the distinct spatial features and the two predicted lensed counter images are not discernible in the shallow HST RELICS discovery images. Here we propose a total of 6 orbits of deeper WFC3/IR imaging (1 each in F105W and 15920( 4) - 07-Aug-2019 21:13:11 - [ 2] F125W, 2 each in F140W and F160W) to: (1) reveal the extended arc morphology in more detail (2) detect one or both lensed counter images, improving the lens model and producing geometric verification of the arc redshift (3) deepen the imaging on the large number of lensed z~6-8 candidates (26 candidates, 2nd highest among all 41 RELICS cluster fields), improving constraints on the faint-end of the rest-UV luminosity function This prolific lensing cluster and the z~10 arc promises to be favorite targets for JWST observations in Cycle 1 and beyond. This discovery of a z~10 galaxy bright enough for detailed and resolved study required a large search area of many lensing clusters and may not be replicated in JWST's lifetime. ------------------------------------------------------------------------------------ Observations Description ------------------------ This program will obtain 6 orbits of WFC3/IR imaging of the galaxy cluster SPT0615-57. The imaging mostly overlaps the existing RELICS imaging, but is shifted to search for the z~10 counterimage. We divide our 6 orbits among 4 IR filters: F105W: 1 orbit F125W: 1 orbit F140W: 2 orbits F160W: 2 orbits Within each orbit, we will obtain 4 images in a single filter, using small dithers to optimally sample the PSF. The orients were chosen to best overlap the existing RELICS HST imaging. However, EARLY SCHEDULING prior to the JWST call for proposal deadline is our priority, if possible. Therefore, we are willing to relax our orient contraints if necessary to obtain earlier schedulability. ------------------------------------------------------------------------------------ 15920( 4) - 07-Aug-2019 21:13:11 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 SPT0615-JD CLUSTER OF GALAXIES, RA=06H15M52.1604S, J2000 V = 18 GRAVITATIONAL LENS, DEC=-57D46'50.50" RICH CLUSTER Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 15920( 4) - 07-Aug-2019 21:13:11 - [ 4] Visit: 01 (F105W-F125W) Visit Requirements: SCHED 30% 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 SPT0615-JD WFC3/IR MULTIAC IR-FIX F105W NSAMP=15, SAMP-SEQ=SPARS50 1 DEF CUM (702.939 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 SPT0615-JD WFC3/IR MULTIAC IR-FIX F105W NSAMP=15, SAMP-SEQ=SPARS50 1 DEF POS TARG -0.20325, CUM (702.939 0.30275 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 SPT0615-JD WFC3/IR MULTIAC IR-FIX F105W NSAMP=15, SAMP-SEQ=SPARS50 1 DEF POS TARG 7.317, 0.90825 CUM (702.939 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 SPT0615-JD WFC3/IR MULTIAC IR-FIX F105W NSAMP=15, SAMP-SEQ=SPARS50 1 DEF POS TARG 7.11375, 1.211 CUM (702.939 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 SPT0615-JD WFC3/IR MULTIAC IR-FIX F125W NSAMP=15, SAMP-SEQ=SPARS50 1 DEF CUM (702.939 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 SPT0615-JD WFC3/IR MULTIAC IR-FIX F125W NSAMP=15, SAMP-SEQ=SPARS50 1 DEF POS TARG -0.20325, CUM (702.939 0.30275 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 SPT0615-JD WFC3/IR MULTIAC IR-FIX F125W NSAMP=15, SAMP-SEQ=SPARS50 1 DEF POS TARG 7.317, 0.90825 CUM (702.939 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 SPT0615-JD WFC3/IR MULTIAC IR-FIX F125W NSAMP=15, SAMP-SEQ=SPARS50 1 DEF POS TARG 7.11375, 1.211 CUM (702.939 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 | ------------------------------------------------------------------------------------------------------------------------------------ SPT0615-JD 1 WFC3/IR MULTIAC IR-FIX F105W none none none none 1 N/A CUM SPT0615-JD 2 WFC3/IR MULTIAC IR-FIX F105W none none none none 1 N/A CUM 15920( 4) - 07-Aug-2019 21:13:11 - [ 5] 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 | ------------------------------------------------------------------------------------------------------------------------------------ SPT0615-JD 3 WFC3/IR MULTIAC IR-FIX F105W none none none none 1 N/A CUM SPT0615-JD 4 WFC3/IR MULTIAC IR-FIX F105W none none none none 1 N/A CUM SPT0615-JD 5 WFC3/IR MULTIAC IR-FIX F125W none none none none 2 N/A CUM SPT0615-JD 6 WFC3/IR MULTIAC IR-FIX F125W none none none none 2 N/A CUM SPT0615-JD 7 WFC3/IR MULTIAC IR-FIX F125W none none none none 2 N/A CUM SPT0615-JD 8 WFC3/IR MULTIAC IR-FIX F125W none none none none 2 N/A CUM 15920( 4) - 07-Aug-2019 21:13:11 - [ 6] Visit: 02 (F140W) Visit Requirements: SCHED 30%; SAME ORIENT AS 01 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 SPT0615-JD WFC3/IR MULTIAC IR-FIX F140W NSAMP=15, SAMP-SEQ=SPARS50 1 DEF CUM (702.939 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 SPT0615-JD WFC3/IR MULTIAC IR-FIX F140W NSAMP=15, SAMP-SEQ=SPARS50 1 DEF POS TARG 0.542, 0.18165 CUM (702.939 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 SPT0615-JD WFC3/IR MULTIAC IR-FIX F140W NSAMP=15, SAMP-SEQ=SPARS50 1 DEF POS TARG 0.33875, 0.4844 CUM (702.939 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 SPT0615-JD WFC3/IR MULTIAC IR-FIX F140W NSAMP=15, SAMP-SEQ=SPARS50 1 DEF POS TARG -0.20325, CUM (702.939 0.30275 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 SPT0615-JD WFC3/IR MULTIAC IR-FIX F140W NSAMP=15, SAMP-SEQ=SPARS50 1 DEF POS TARG 7.317, 0.90825 CUM (702.939 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 SPT0615-JD WFC3/IR MULTIAC IR-FIX F140W NSAMP=15, SAMP-SEQ=SPARS50 1 DEF POS TARG 7.859, 1.0899 CUM (702.939 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 SPT0615-JD WFC3/IR MULTIAC IR-FIX F140W NSAMP=15, SAMP-SEQ=SPARS50 1 DEF POS TARG 7.65575, CUM (702.939 1.39265 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 SPT0615-JD WFC3/IR MULTIAC IR-FIX F140W NSAMP=15, SAMP-SEQ=SPARS50 1 DEF POS TARG 7.11375, 1.211 CUM (702.939 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 | ------------------------------------------------------------------------------------------------------------------------------------ SPT0615-JD 1 WFC3/IR MULTIAC IR-FIX F140W none none none none 1 N/A CUM SPT0615-JD 2 WFC3/IR MULTIAC IR-FIX F140W none none none none 1 N/A CUM 15920( 4) - 07-Aug-2019 21:13:11 - [ 7] 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 | ------------------------------------------------------------------------------------------------------------------------------------ SPT0615-JD 3 WFC3/IR MULTIAC IR-FIX F140W none none none none 1 N/A CUM SPT0615-JD 4 WFC3/IR MULTIAC IR-FIX F140W none none none none 1 N/A CUM SPT0615-JD 5 WFC3/IR MULTIAC IR-FIX F140W none none none none 2 N/A CUM SPT0615-JD 6 WFC3/IR MULTIAC IR-FIX F140W none none none none 2 N/A CUM SPT0615-JD 7 WFC3/IR MULTIAC IR-FIX F140W none none none none 2 N/A CUM SPT0615-JD 8 WFC3/IR MULTIAC IR-FIX F140W none none none none 2 N/A CUM 15920( 4) - 07-Aug-2019 21:13:11 - [ 8] Visit: 03 (F160W) Visit Requirements: SCHED 30%; SAME ORIENT AS 01 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 SPT0615-JD WFC3/IR MULTIAC IR-FIX F160W NSAMP=15, SAMP-SEQ=SPARS50 1 DEF CUM (702.939 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 SPT0615-JD WFC3/IR MULTIAC IR-FIX F160W NSAMP=15, SAMP-SEQ=SPARS50 1 DEF POS TARG 0.542, 0.18165 CUM (702.939 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 SPT0615-JD WFC3/IR MULTIAC IR-FIX F160W NSAMP=15, SAMP-SEQ=SPARS50 1 DEF POS TARG 0.33875, 0.4844 CUM (702.939 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 SPT0615-JD WFC3/IR MULTIAC IR-FIX F160W NSAMP=15, SAMP-SEQ=SPARS50 1 DEF POS TARG -0.20325, CUM (702.939 0.30275 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 SPT0615-JD WFC3/IR MULTIAC IR-FIX F160W NSAMP=15, SAMP-SEQ=SPARS50 1 DEF POS TARG 7.317, 0.90825 CUM (702.939 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 SPT0615-JD WFC3/IR MULTIAC IR-FIX F160W NSAMP=15, SAMP-SEQ=SPARS50 1 DEF POS TARG 7.859, 1.0899 CUM (702.939 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 SPT0615-JD WFC3/IR MULTIAC IR-FIX F160W NSAMP=15, SAMP-SEQ=SPARS50 1 DEF POS TARG 7.65575, CUM (702.939 1.39265 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 SPT0615-JD WFC3/IR MULTIAC IR-FIX F160W NSAMP=15, SAMP-SEQ=SPARS50 1 DEF POS TARG 7.11375, 1.211 CUM (702.939 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 | ------------------------------------------------------------------------------------------------------------------------------------ SPT0615-JD 1 WFC3/IR MULTIAC IR-FIX F160W none none none none 1 N/A CUM SPT0615-JD 2 WFC3/IR MULTIAC IR-FIX F160W none none none none 1 N/A CUM 15920( 4) - 07-Aug-2019 21:13:11 - [ 9] 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 | ------------------------------------------------------------------------------------------------------------------------------------ SPT0615-JD 3 WFC3/IR MULTIAC IR-FIX F160W none none none none 1 N/A CUM SPT0615-JD 4 WFC3/IR MULTIAC IR-FIX F160W none none none none 1 N/A CUM SPT0615-JD 5 WFC3/IR MULTIAC IR-FIX F160W none none none none 2 N/A CUM SPT0615-JD 6 WFC3/IR MULTIAC IR-FIX F160W none none none none 2 N/A CUM SPT0615-JD 7 WFC3/IR MULTIAC IR-FIX F160W none none none none 2 N/A CUM SPT0615-JD 8 WFC3/IR MULTIAC IR-FIX F160W none none none none 2 N/A CUM 15920( 4) - 07-Aug-2019 21:13:11 - [ 10] Summary Form for Proposal 15920 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures IR-FIX ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/IR ------------------------------------------------------------------------------------------------------------------------------------ Opmodes MULTIACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters NSAMP=15, SAMP-SEQ=SPARS50 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements POS TARG -0.20325, 0.30275, POS TARG 0.33875, 0.4844, POS TARG 0.542, 0.18165, POS TARG 7.11375, 1.211, POS TARG 7.317, 0.90825, POS TARG 7.65575, 1.39265, POS TARG 7.859, 1.0899, SAME ORIENT AS 01, SCHED 30% ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F105W, F125W, F140W, F160W ------------------------------------------------------------------------------------------------------------------------------------ Target Names SPT0615-JD ------------------------------------------------------------------------------------------------------------------------------------