17599( 11) - 03-Jul-2024 17:09:50 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 17599 Version: 11 Check-in Time: 03-Jul-2024 17:09:50 STScI Edit Number: 8 Title The optical emission of the highest redshift lens system ------------------------------------------------------------------------------------ Type Cycle GO 31 ------------------------------------------------------------------------------------ Investigators Contact? PI: Prof. Pieter van Dokkum Yale University Y CoI: Dr. Gabriel Brammer University of Copenhagen, Niels Bohr N Institute CoI: Dr. Bingjie Wang The Pennsylvania State University N CoI: Dr. Joel Leja The Pennsylvania State University N CoI: Prof. Charlie Conroy Harvard University N ------------------------------------------------------------------------------------ Abstract Extensive studies with HST have shown that the most massive galaxies at z~2 are very compact. These compact massive galaxies are thought to be the cores of today's giant ellipticals, observed prior to growing their outer envelopes through a succession of minor mergers. Recently one of these galaxies was serendipitously found to have a complete Einstein ring in JWST images. It is the first JWST-discovered Einstein ring and also the highest redshift lens known to date. Currently there are only ground-based images of this system below 0.8 micron, making it impossible to separate the lens from the ring at optical wavelengths. Here we propose to complement the 4-band NIRCAM near-IR data for this system with 5-band UVIS imaging. The main goal is to disentangle the currently-blended optical emission sources. This will yield the redshift of the ring from the location of the Lyman break and provide much improved constraints on the stellar populations of both the lens and the ring. Given the expected interest in these data we waive the proprietary time. ------------------------------------------------------------------------------------ Observations Description ------------------------ Images are taken in 5 medium band filters. The exposure time is the same for all filters: there are 4 exposure in 2 orbits, in 1 visit, for each filter. The exposure time per exposure is about 1300s. The standard box dither pattern is used to improve sampling of the PSF. 5 electrons of FLASH is added to each exposure. There is a discrepancy between the ETC and the APT when it comes to the FLASH requirement: according to the ETC this is only needed for F845M but according to APT it is needed for all filters. Conservatively it is applied to all filters. ------------------------------------------------------------------------------------ 17599( 11) - 03-Jul-2024 17:09:50 - [ 2] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 JWST-ER1 GALAXY, EINSTEIN RING, RA=10H00M24.1736S, J2000 V = 25 GRAVITATIONAL LENS, DEC=+01D53'34.17" HIGH REDSHIFT GALAXY Reference Frame: ICRS Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17599( 11) - 03-Jul-2024 17:09:50 - [ 3] 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 ------------------------------------------------------------------------------------------------------------------------------------ 17599( 11) - 03-Jul-2024 17:09:50 - [ 4] 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 JWST-ER1 WFC3/UVI ACCUM UVIS2-C1K F547M 1 1250 S GS ACQ SCENARIO BASE1B3; S 1C-SUB see below PATTERN 1 1 (5308 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 | ------------------------------------------------------------------------------------------------------------------------------------ JWST-ER1 1 WFC3/UVI ACCUM UVIS2-C1 F547M 1 none none none 1 1329.0 S S K1C-SUB JWST-ER1 1 WFC3/UVI ACCUM UVIS2-C1 F547M 2 none none none 1 1329.0 S S K1C-SUB JWST-ER1 1 WFC3/UVI ACCUM UVIS2-C1 F547M 3 none none none 2 1325.0 S S K1C-SUB JWST-ER1 1 WFC3/UVI ACCUM UVIS2-C1 F547M 4 none none none 2 1325.0 S S K1C-SUB 17599( 11) - 03-Jul-2024 17:09:50 - [ 5] 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 JWST-ER1 WFC3/UVI ACCUM UVIS2-C1K F621M 1 1250 S GS ACQ SCENARIO BASE1B3; S 1C-SUB see below PATTERN 1 1 (5308 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 | ------------------------------------------------------------------------------------------------------------------------------------ JWST-ER1 1 WFC3/UVI ACCUM UVIS2-C1 F621M 1 none none none 1 1329.0 S S K1C-SUB JWST-ER1 1 WFC3/UVI ACCUM UVIS2-C1 F621M 2 none none none 1 1329.0 S S K1C-SUB JWST-ER1 1 WFC3/UVI ACCUM UVIS2-C1 F621M 3 none none none 2 1325.0 S S K1C-SUB JWST-ER1 1 WFC3/UVI ACCUM UVIS2-C1 F621M 4 none none none 2 1325.0 S S K1C-SUB 17599( 11) - 03-Jul-2024 17:09:50 - [ 6] 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 JWST-ER1 WFC3/UVI ACCUM UVIS2-C1K F689M 1 1250 S GS ACQ SCENARIO BASE1B3; S 1C-SUB see below PATTERN 1 1 (5308 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 | ------------------------------------------------------------------------------------------------------------------------------------ JWST-ER1 1 WFC3/UVI ACCUM UVIS2-C1 F689M 1 none none none 1 1329.0 S S K1C-SUB JWST-ER1 1 WFC3/UVI ACCUM UVIS2-C1 F689M 2 none none none 1 1329.0 S S K1C-SUB JWST-ER1 1 WFC3/UVI ACCUM UVIS2-C1 F689M 3 none none none 2 1325.0 S S K1C-SUB JWST-ER1 1 WFC3/UVI ACCUM UVIS2-C1 F689M 4 none none none 2 1325.0 S S K1C-SUB 17599( 11) - 03-Jul-2024 17:09:50 - [ 7] 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 JWST-ER1 WFC3/UVI ACCUM UVIS2-C1K F763M 1 1250 S GS ACQ SCENARIO BASE1B3; S 1C-SUB see below PATTERN 1 1 (5308 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 | ------------------------------------------------------------------------------------------------------------------------------------ JWST-ER1 1 WFC3/UVI ACCUM UVIS2-C1 F763M 1 none none none 1 1329.0 S S K1C-SUB JWST-ER1 1 WFC3/UVI ACCUM UVIS2-C1 F763M 2 none none none 1 1329.0 S S K1C-SUB JWST-ER1 1 WFC3/UVI ACCUM UVIS2-C1 F763M 3 none none none 2 1325.0 S S K1C-SUB JWST-ER1 1 WFC3/UVI ACCUM UVIS2-C1 F763M 4 none none none 2 1325.0 S S K1C-SUB 17599( 11) - 03-Jul-2024 17:09:50 - [ 8] 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 JWST-ER1 WFC3/UVI ACCUM UVIS2-C1K F845M FLASH=5 1 1250 S GS ACQ SCENARIO BASE1B3; S 1C-SUB see below PATTERN 1 1 (5298 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 | ------------------------------------------------------------------------------------------------------------------------------------ JWST-ER1 1 WFC3/UVI ACCUM UVIS2-C1 F845M 1 none none none 1 1327.0 S S K1C-SUB JWST-ER1 1 WFC3/UVI ACCUM UVIS2-C1 F845M 2 none none none 1 1327.0 S S K1C-SUB JWST-ER1 1 WFC3/UVI ACCUM UVIS2-C1 F845M 3 none none none 2 1322.0 S S K1C-SUB JWST-ER1 1 WFC3/UVI ACCUM UVIS2-C1 F845M 4 none none none 2 1322.0 S S K1C-SUB 17599( 11) - 03-Jul-2024 17:09:50 - [ 9] Visit: 54 Visit Requirements: On Hold Comments: Additional Comments: HOPR repeat of visit 04. Only first obit is being repeated. POS-TARGs have been used to define the first to dither positions. Exp 1 x= 0.00, y= 0.00 Exp 2 x= 4.00, y= 1.50 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 JWST-ER1 WFC3/UVI ACCUM UVIS2-C1K F763M 1 1250 S POS TARG 0.00, 0.00; GS S 1C-SUB see below ACQ SCENARIO BASE1O3 (1303 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 JWST-ER1 WFC3/UVI ACCUM UVIS2-C1K F763M 1 1250 S POS TARG 4.00, 1.50 S 1C-SUB see below (1224 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 | ------------------------------------------------------------------------------------------------------------------------------------ JWST-ER1 1 WFC3/UVI ACCUM UVIS2-C1 F763M none none none none 1 1303.0 S S K1C-SUB JWST-ER1 2 WFC3/UVI ACCUM UVIS2-C1 F763M none none none none 1 1224.0 S S K1C-SUB 17599( 11) - 03-Jul-2024 17:09:50 - [ 10] Summary Form for Proposal 17599 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures UVIS2-C1K1C-SUB ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters FLASH=5 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements GS ACQ SCENARIO BASE1B3, GS ACQ SCENARIO BASE1O3, PATTERN 1 1, POS TARG 0.00, 0.00, POS TARG 4.00, 1.50 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F547M, F621M, F689M, F763M, F845M ------------------------------------------------------------------------------------------------------------------------------------ Target Names JWST-ER1 ------------------------------------------------------------------------------------------------------------------------------------