14252( 2) - 20-Jul-2015 13:35:00 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 14252 Version: 2 Check-in Time: 20-Jul-2015 13:35:00 STScI Edit Number: 0 Title Environmental signatures on galaxy populations in the most massive clusters at z~1.5 ------------------------------------------------------------------------------------ Type Cycle GO 23 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Veronica Strazzullo Universitats-Sternwarte Munchen Y CoI: Dr. Joseph Mohr Universitats-Sternwarte Munchen N CoI: Alexandro Saro Universitats-Sternwarte Munchen N CoI: Dr. Maurilio Pannella Max-Planck-Institut fur extraterrestrische N Physik CoI: Dr. Spencer Adam Stanford University of California - Davis N CoI: Prof. Mark Brodwin University of Missouri - Kansas City N CoI: Dr. Michael McDonald Massachusetts Institute of Technology N CoI: Mr. I-Non Chiu Universitats-Sternwarte Munchen N CoI: Dr. Joerg Dietrich Universitats-Sternwarte Munchen N CoI: Sebastian Bocquet Universitats-Sternwarte Munchen N CoI: Raffaella Capasso Universitats-Sternwarte Munchen N CoI: Prof. Bodo Ziegler University of Vienna N CoI: Dr. Ulrike Kuchner University of Vienna N ------------------------------------------------------------------------------------ Abstract We propose to obtain ACS/F814W and WFC3/F140W imaging of a complete sample of the five highest redshift clusters discovered in the SPT-SZ survey. This will enable a first uniform statistical study of galaxy populations in the most massive structures at z>1.4. This redshift is a crucial transition time for massive galaxies in cluster environments. It bridges the major star formation events at z~2 that built most of the stars in massive cluster early-types, and the z~1 regime largely characterized by passive evolution in cluster cores. Massive clusters at this time are still very rare. Cluster galaxies at this redshift have thus been investigated in only a handful of clusters selected in different ways that may well bias galaxy population studies. As an important next step beyond these initial studies, this project explores central questions that still remain controversial: How efficient is quenching of star formation in the most massive structures at z~1.5? How common are highly star-forming galaxies in the densest cluster-core environments? What are the morphologies of massive cluster galaxies, and how different is their structural evolution in clusters and in the field? How is the link between old stellar populations and bulge-dominated structure established so early? Answering these questions requires deep high-resolution observations to probe stellar populations and morphologies, and a statistically significant, unbiased, uniform sample of cluster galaxies in very massive structures, where environmental signatures are expected to be more evident. The combination of HST capabilities with a unique cluster sample now allows a first, timely and necessary step forward. ------------------------------------------------------------------------------------ Observations Description ------------------------ This is a standard WFC3/IR and ACS/WFC deep imaging program of 5 SPT-selected 14252( 2) - 20-Jul-2015 13:35:00 - [ 2] galaxy clusters at z>1.4: SPT-CLJ2040-4451, SPT-CLJ0607-4448, SPT-CLJ0459-4947, SPT-CLJ0421-4845, SPT-CLJ0446-4606. All clusters are imaged with ACS/F814W for 2 orbits each (on source exposure time ~4700-4800s). SPT-CLJ0607-4448, SPT-CLJ0459-4947, SPT-CLJ0421-4845, SPT-CLJ0446-4606 are also imaged with WFC3/F140W for 1 orbit each (on source time ~ 2424s). WFC3/F140W observations of each cluster are acquired with 8 dithered exposures (on a dither-blob + dither-box-min pattern). ACS/F814W observations are acquired with 8 dithered exposures (on a dither-line + dither-box pattern). For all observations, sufficient dithering is required not only for artifact and cosmic ray removal but also for appropriate PSF reconstruction, in view of the morphological analysis to be carried out on these data. The adopted dithering for ACS observations also fills the gap between the two WFC detectors. ------------------------------------------------------------------------------------ 14252( 2) - 20-Jul-2015 13:35:00 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 SPT-CLJ2040- CLUSTER OF GALAXIES, RA=20H40M59.1170S, J2000 Z = 1.44 Target cluster galaxies have 4451 HIGH REDSHIFT CLUSTER DEC=-44D51'31.88" F814W<25.8, F140W<23.3 AB mag. Brightest source around (within ~4' box) has J~15.4, r~13.5 mag (Vega). Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 2 SPT-CLJ0607- CLUSTER OF GALAXIES, RA=06H07M34.5460S, J2000 Z = 1.4 Target cluster galaxies have 4448 HIGH REDSHIFT CLUSTER DEC=-44D48'12.86" F814W<25.8, F140W<23.3 AB mag. Brightest source around (within ~4' box) has J~13.3, r~12.2 mag (Vega). Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 3 SPT-CLJ0459- CLUSTER OF GALAXIES, RA=04H59M41.8900S, J2000 Z = 1.5 Target cluster galaxies have 4947 HIGH REDSHIFT CLUSTER DEC=-49D47'10.19" F814W<25.8, F140W<23.3 AB mag.Brightest source around (within ~4' box) has J~15.5, r~14.5 mag (Vega). Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 4 SPT-CLJ0421- CLUSTER OF GALAXIES, RA=04H21M18.1330S, J2000 Z = 1.4 Target cluster galaxies have 4845 HIGH REDSHIFT CLUSTER DEC=-48D45'38.20" F814W<25.8, F140W<23.3 AB mag.Brightest source around (within ~4' box) has J~14.6, r~13.3 mag (Vega). Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 5 SPT-CLJ0446- CLUSTER OF GALAXIES, RA=04H46M55.4680S, J2000 Z = 1.5 Target cluster galaxies have 4606 HIGH REDSHIFT CLUSTER DEC=-46D06'0.87" F814W<25.8, F140W<23.3 AB mag.Brightest source around (within ~4' box) has J~15.4, r~14.4 mag (Vega). Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 14252( 2) - 20-Jul-2015 13:35:00 - [ 4] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 4 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-IR-DITHER-BLOB WFC3-IR-DITHER-BOX-MIN Pattern_Purpose DITHER DITHER Number_Of_Points 2 4 Point_Spacing 5.183 0.572 Line_Spacing 0.365 Coordinate_Frame POS-TARG POS-TARG Pattern_Orient 41.859 18.528 Angle_Between_Sides 74.653 Center_Pattern YES NO ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 5 Primary_Pattern Secondary_Pattern Pattern_Type ACS-WFC-DITHER-LINE ACS-WFC-DITHER-BOX Pattern_Purpose DITHER DITHER Number_Of_Points 2 4 Point_Spacing 3.011 0.265 Line_Spacing 0.187 Coordinate_Frame POS-TARG POS-TARG Pattern_Orient 85.28 20.67 Angle_Between_Sides 69.05 Center_Pattern NO NO ------------------------------------------------------------------------------------------------------------------------------------ 14252( 2) - 20-Jul-2015 13:35:00 - [ 5] Visit: 01 Visit Requirements: On Hold Comments: Additional Comments: 2-orbit ACS/F814 observations of SPT-CLJ2040-4451 (4752s on source). 8 dithers. 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 SPT-CLJ2040 ACS/WFC ACCUM WFC F814W 1 550 S PATTERN 5 1 -4451 see below (4752 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 | ------------------------------------------------------------------------------------------------------------------------------------ SPT-CLJ2040-4451 1 ACS/WFC ACCUM WFC F814W 1 1 none none 1 570.0 S SPT-CLJ2040-4451 1 ACS/WFC ACCUM WFC F814W 1 2 none none 1 570.0 S SPT-CLJ2040-4451 1 ACS/WFC ACCUM WFC F814W 1 3 none none 1 570.0 S SPT-CLJ2040-4451 1 ACS/WFC ACCUM WFC F814W 1 4 none none 1 570.0 S SPT-CLJ2040-4451 1 ACS/WFC ACCUM WFC F814W 2 1 none none 2 618.0 S SPT-CLJ2040-4451 1 ACS/WFC ACCUM WFC F814W 2 2 none none 2 618.0 S SPT-CLJ2040-4451 1 ACS/WFC ACCUM WFC F814W 2 3 none none 2 618.0 S SPT-CLJ2040-4451 1 ACS/WFC ACCUM WFC F814W 2 4 none none 2 618.0 S 14252( 2) - 20-Jul-2015 13:35:00 - [ 6] Visit: 02 Visit Requirements: On Hold Comments: Additional Comments: 2-orbit ACS/F814 (4742s on source) plus 1-orbit WFC3/F140W (2424s on source) observations of SPT-CLJ0607-4448. 8 dithers are used for both the ACS and the WFC3 imaging. 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 SPT-CLJ0607 WFC3/IR MULTIAC IR-FIX F140W SAMP-SEQ=SPARS25, NSAMP=13 1 DEF PATTERN 4 1 -4448 CUM (2423.508 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 SPT-CLJ0607 ACS/WFC ACCUM WFC F814W 1 550 S PATTERN 5 2 -4448 see below (4752 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 | ------------------------------------------------------------------------------------------------------------------------------------ SPT-CLJ0607-4448 1 WFC3/IR MULTIAC IR-FIX F140W 1 1 none none 1 N/A CUM SPT-CLJ0607-4448 1 WFC3/IR MULTIAC IR-FIX F140W 1 2 none none 1 N/A CUM SPT-CLJ0607-4448 1 WFC3/IR MULTIAC IR-FIX F140W 1 3 none none 1 N/A CUM SPT-CLJ0607-4448 1 WFC3/IR MULTIAC IR-FIX F140W 1 4 none none 1 N/A CUM SPT-CLJ0607-4448 1 WFC3/IR MULTIAC IR-FIX F140W 2 1 none none 1 N/A CUM SPT-CLJ0607-4448 1 WFC3/IR MULTIAC IR-FIX F140W 2 2 none none 1 N/A CUM SPT-CLJ0607-4448 1 WFC3/IR MULTIAC IR-FIX F140W 2 3 none none 1 N/A CUM SPT-CLJ0607-4448 1 WFC3/IR MULTIAC IR-FIX F140W 2 4 none none 1 N/A CUM SPT-CLJ0607-4448 2 ACS/WFC ACCUM WFC F814W 1 1 none none 2 570.0 S SPT-CLJ0607-4448 2 ACS/WFC ACCUM WFC F814W 1 2 none none 2 570.0 S SPT-CLJ0607-4448 2 ACS/WFC ACCUM WFC F814W 1 3 none none 2 570.0 S SPT-CLJ0607-4448 2 ACS/WFC ACCUM WFC F814W 1 4 none none 2 570.0 S SPT-CLJ0607-4448 2 ACS/WFC ACCUM WFC F814W 2 1 none none 3 618.0 S SPT-CLJ0607-4448 2 ACS/WFC ACCUM WFC F814W 2 2 none none 3 618.0 S SPT-CLJ0607-4448 2 ACS/WFC ACCUM WFC F814W 2 3 none none 3 618.0 S SPT-CLJ0607-4448 2 ACS/WFC ACCUM WFC F814W 2 4 none none 3 618.0 S 14252( 2) - 20-Jul-2015 13:35:00 - [ 7] Visit: 03 Visit Requirements: On Hold Comments: Additional Comments: 2-orbit ACS/F814 (4840s on source) plus 1-orbit WFC3/F140W (2424s on source) observations of SPT-CLJ0459-4947. 8 dithers are used for both the ACS and the WFC3 imaging. 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 SPT-CLJ0459 WFC3/IR MULTIAC IR-FIX F140W SAMP-SEQ=SPARS25, NSAMP=13 1 DEF PATTERN 4 1 -4947 CUM (2423.508 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 SPT-CLJ0459 ACS/WFC ACCUM WFC F814W 1 550 S PATTERN 5 2 -4947 see below (4840 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 | ------------------------------------------------------------------------------------------------------------------------------------ SPT-CLJ0459-4947 1 WFC3/IR MULTIAC IR-FIX F140W 1 1 none none 1 N/A CUM SPT-CLJ0459-4947 1 WFC3/IR MULTIAC IR-FIX F140W 1 2 none none 1 N/A CUM SPT-CLJ0459-4947 1 WFC3/IR MULTIAC IR-FIX F140W 1 3 none none 1 N/A CUM SPT-CLJ0459-4947 1 WFC3/IR MULTIAC IR-FIX F140W 1 4 none none 1 N/A CUM SPT-CLJ0459-4947 1 WFC3/IR MULTIAC IR-FIX F140W 2 1 none none 1 N/A CUM SPT-CLJ0459-4947 1 WFC3/IR MULTIAC IR-FIX F140W 2 2 none none 1 N/A CUM SPT-CLJ0459-4947 1 WFC3/IR MULTIAC IR-FIX F140W 2 3 none none 1 N/A CUM SPT-CLJ0459-4947 1 WFC3/IR MULTIAC IR-FIX F140W 2 4 none none 1 N/A CUM SPT-CLJ0459-4947 2 ACS/WFC ACCUM WFC F814W 1 1 none none 2 581.0 S SPT-CLJ0459-4947 2 ACS/WFC ACCUM WFC F814W 1 2 none none 2 581.0 S SPT-CLJ0459-4947 2 ACS/WFC ACCUM WFC F814W 1 3 none none 2 581.0 S SPT-CLJ0459-4947 2 ACS/WFC ACCUM WFC F814W 1 4 none none 2 581.0 S SPT-CLJ0459-4947 2 ACS/WFC ACCUM WFC F814W 2 1 none none 3 629.0 S SPT-CLJ0459-4947 2 ACS/WFC ACCUM WFC F814W 2 2 none none 3 629.0 S SPT-CLJ0459-4947 2 ACS/WFC ACCUM WFC F814W 2 3 none none 3 629.0 S SPT-CLJ0459-4947 2 ACS/WFC ACCUM WFC F814W 2 4 none none 3 629.0 S 14252( 2) - 20-Jul-2015 13:35:00 - [ 8] Visit: 04 Visit Requirements: On Hold Comments: Additional Comments: 2-orbit ACS/F814 (4840s on source) plus 1-orbit WFC3/F140W (2424s on source) observations of SPT-CLJ0421-4845. 8 dithers are used for both the ACS and the WFC3 imaging. 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 SPT-CLJ0421 WFC3/IR MULTIAC IR-FIX F140W SAMP-SEQ=SPARS25, NSAMP=13 1 DEF PATTERN 4 1 -4845 CUM (2423.508 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 SPT-CLJ0421 ACS/WFC ACCUM WFC F814W 1 550 S PATTERN 5 2 -4845 see below (4840 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 | ------------------------------------------------------------------------------------------------------------------------------------ SPT-CLJ0421-4845 1 WFC3/IR MULTIAC IR-FIX F140W 1 1 none none 1 N/A CUM SPT-CLJ0421-4845 1 WFC3/IR MULTIAC IR-FIX F140W 1 2 none none 1 N/A CUM SPT-CLJ0421-4845 1 WFC3/IR MULTIAC IR-FIX F140W 1 3 none none 1 N/A CUM SPT-CLJ0421-4845 1 WFC3/IR MULTIAC IR-FIX F140W 1 4 none none 1 N/A CUM SPT-CLJ0421-4845 1 WFC3/IR MULTIAC IR-FIX F140W 2 1 none none 1 N/A CUM SPT-CLJ0421-4845 1 WFC3/IR MULTIAC IR-FIX F140W 2 2 none none 1 N/A CUM SPT-CLJ0421-4845 1 WFC3/IR MULTIAC IR-FIX F140W 2 3 none none 1 N/A CUM SPT-CLJ0421-4845 1 WFC3/IR MULTIAC IR-FIX F140W 2 4 none none 1 N/A CUM SPT-CLJ0421-4845 2 ACS/WFC ACCUM WFC F814W 1 1 none none 2 581.0 S SPT-CLJ0421-4845 2 ACS/WFC ACCUM WFC F814W 1 2 none none 2 581.0 S SPT-CLJ0421-4845 2 ACS/WFC ACCUM WFC F814W 1 3 none none 2 581.0 S SPT-CLJ0421-4845 2 ACS/WFC ACCUM WFC F814W 1 4 none none 2 581.0 S SPT-CLJ0421-4845 2 ACS/WFC ACCUM WFC F814W 2 1 none none 3 629.0 S SPT-CLJ0421-4845 2 ACS/WFC ACCUM WFC F814W 2 2 none none 3 629.0 S SPT-CLJ0421-4845 2 ACS/WFC ACCUM WFC F814W 2 3 none none 3 629.0 S SPT-CLJ0421-4845 2 ACS/WFC ACCUM WFC F814W 2 4 none none 3 629.0 S 14252( 2) - 20-Jul-2015 13:35:00 - [ 9] Visit: 05 Visit Requirements: On Hold Comments: Additional Comments: 2-orbit ACS/F814 (4840s on source) plus 1-orbit WFC3/F140W (2424s on source) observations of SPT-CLJ0446-4606. 8 dithers are used for both the ACS and the WFC3 imaging. 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 SPT-CLJ0446 WFC3/IR MULTIAC IR-FIX F140W SAMP-SEQ=SPARS25, NSAMP=13 1 DEF PATTERN 4 1 -4606 CUM (2423.508 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 SPT-CLJ0446 ACS/WFC ACCUM WFC F814W 1 550 S PATTERN 5 2 -4606 see below (4840 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 | ------------------------------------------------------------------------------------------------------------------------------------ SPT-CLJ0446-4606 1 WFC3/IR MULTIAC IR-FIX F140W 1 1 none none 1 N/A CUM SPT-CLJ0446-4606 1 WFC3/IR MULTIAC IR-FIX F140W 1 2 none none 1 N/A CUM SPT-CLJ0446-4606 1 WFC3/IR MULTIAC IR-FIX F140W 1 3 none none 1 N/A CUM SPT-CLJ0446-4606 1 WFC3/IR MULTIAC IR-FIX F140W 1 4 none none 1 N/A CUM SPT-CLJ0446-4606 1 WFC3/IR MULTIAC IR-FIX F140W 2 1 none none 1 N/A CUM SPT-CLJ0446-4606 1 WFC3/IR MULTIAC IR-FIX F140W 2 2 none none 1 N/A CUM SPT-CLJ0446-4606 1 WFC3/IR MULTIAC IR-FIX F140W 2 3 none none 1 N/A CUM SPT-CLJ0446-4606 1 WFC3/IR MULTIAC IR-FIX F140W 2 4 none none 1 N/A CUM SPT-CLJ0446-4606 2 ACS/WFC ACCUM WFC F814W 1 1 none none 2 581.0 S SPT-CLJ0446-4606 2 ACS/WFC ACCUM WFC F814W 1 2 none none 2 581.0 S SPT-CLJ0446-4606 2 ACS/WFC ACCUM WFC F814W 1 3 none none 2 581.0 S SPT-CLJ0446-4606 2 ACS/WFC ACCUM WFC F814W 1 4 none none 2 581.0 S SPT-CLJ0446-4606 2 ACS/WFC ACCUM WFC F814W 2 1 none none 3 629.0 S SPT-CLJ0446-4606 2 ACS/WFC ACCUM WFC F814W 2 2 none none 3 629.0 S SPT-CLJ0446-4606 2 ACS/WFC ACCUM WFC F814W 2 3 none none 3 629.0 S SPT-CLJ0446-4606 2 ACS/WFC ACCUM WFC F814W 2 4 none none 3 629.0 S 14252( 2) - 20-Jul-2015 13:35:00 - [ 10] Summary Form for Proposal 14252 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures IR-FIX, WFC ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/WFC, WFC3/IR ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, MULTIACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters NSAMP=13, SAMP-SEQ=SPARS25 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements PATTERN 4 1, PATTERN 5 1, PATTERN 5 2 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F140W, F814W ------------------------------------------------------------------------------------------------------------------------------------ Target Names SPT-CLJ0421-4845, SPT-CLJ0446-4606, SPT-CLJ0459-4947, SPT-CLJ0607-4448, SPT-CLJ2040-4451 ------------------------------------------------------------------------------------------------------------------------------------