14652( 5) - 26-Sep-2016 21:05:41 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 14652 Version: 5 Check-in Time: 26-Sep-2016 21:05:41 STScI Edit Number: 1 Title Super-Eight: The brightest z~8 Galaxies ------------------------------------------------------------------------------------ Type Cycle GO 24 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Benne Willem Holwerda Sterrewacht Leiden Y CoI: Dr. Rychard Bouwens Universiteit Leiden N CoI: Prof. Pascal Oesch Observatoire de Geneve N CoI: Prof. Garth D. Illingworth University of California - Santa Cruz N CoI: Dr. Renske Smit Durham Univ. N CoI: Mr. Daniel K. Magee University of California - Santa Cruz N CoI: Dr. Larry Bradley Space Telescope Science Institute N CoI: Dr. Ivo Labbe Universiteit Leiden N CoI: Dr. Valentina Calvi Space Telescope Science Institute N CoI: Mr. Guido Roberts-Borsani University College London (UCL) N CoI: Dr. Gerard Williger University of Louisville Research N Foundation, Inc. ------------------------------------------------------------------------------------ Abstract What are the properties of the most massive z~8 galaxies ("Super-Eights") and how luminous can these galaxies become at that epoch? Answering these questions is challenging due to the rarity of luminous z~8 galaxies and the large field-to-field variations in their volume densities. Indeed, the full wide-area CANDELS program only shows 3 z~8 galaxy candidates brighter than 25.5 mag and all of these candidates conspicuously lie in the same CANDELS field (EGS). One of our strongest new probes for particularly luminous z~8 galaxies are the WFC3 Pure-Parallel (PP) programs. Particularly intriguing are 8 bright z~8 candidates in these observations. These candidates have similar luminosities as the 3 brightest z~8 candidates from CANDELS (all spectroscopically confirmed). However, the uncertain contamination levels at extreme bright end of z~8 selection mean that follow-up observations are critical. We propose highly-efficient pointed HST and Spitzer/IRAC observations to determine if these candidates are indeed at z~8. We estimate that anywhere from 50 to 100% of the targeted sources will be confirmed to be at z~8 based on our results from CANDELS. The estimate is very uncertain due to very large cosmic variance in the CANDELS result and contamination from rare low-redshift sources. When combined with CANDELS, our observations would provide us the strongest current constraints on the volume density of bright, massive galaxies in the early Universe (serving as a guide to models of their build-up) and also provide valuable targets for future spectroscopy (e.g. with JWST), useful for probing the ionization state of the IGM. ------------------------------------------------------------------------------------ Observations Description ------------------------ 14652( 5) - 26-Sep-2016 21:05:41 - [ 2] ACS F814W observations ------------------------------------------------------------------------------------ 14652( 5) - 26-Sep-2016 21:05:41 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 SUPER-8-1 GALAXY, PROTOGALAXY RA=23H50M34.6600S, J2000 V = 28.0 DEC=-43D32'32.50" Reference Frame: ICRS Extended: NO ------------------------------------------------------------------------------------------------------------------------------------ 2 SUPER-8-2 GALAXY, PROTOGALAXY RA=08H35M13.1000S, J2000 V = 28.0 DEC=+24D55'38.10" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 3 SUPER-8-3 GALAXY, PROTOGALAXY RA=15H57M5.7000S, J2000 V = 28.0 DEC=-37D46'55.50" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 4 SUPER-8-4 GALAXY, PROTOGALAXY RA=22H02M50.0000S, J2000 V = 28.0 DEC=+18D51'0.20" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 5 BORG-0116+14 GALAXY, PROTOGALAXY RA=01H16M8.9300S, J2000 V = 28.0 25-747 DEC=+14D24'24.50" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 6 BORG-2229-09 GALAXY, PROTOGALAXY RA=22H28M45.6700S, J2000 V = 28.0 45-548 DEC=-09D44'56.80" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 7 BORG-1152+34 GALAXY, PROTOGALAXY RA=11H51M37.8500S, J2000 V = 28.0 02-912 DEC=+34D02'22.90" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 8 BORG-0853+03 GALAXY, PROTOGALAXY RA=08H52M44.5200S, J2000 V = 28.0 10-145 DEC=+03D08'48.10" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 14652( 5) - 26-Sep-2016 21:05:41 - [ 4] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type ACS-WFC-DITHER-BOX Pattern_Purpose DITHER Number_Of_Points 4 Point_Spacing 0.262 Line_Spacing 0.192 Coordinate_Frame POS-TARG Pattern_Orient 18.39 Angle_Between_Sides 68.14 Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ 14652( 5) - 26-Sep-2016 21:05:41 - [ 5] Visit: 01 (Super-8-1) 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 SUPER-8-1 ACS/WFC ACCUM WFC1-CTE F814W 1 1300 S PATTERN 1 1 see below (5384 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 | ------------------------------------------------------------------------------------------------------------------------------------ SUPER-8-1 1 ACS/WFC ACCUM WFC1-CTE F814W 1 none none none 1 1250.0 S SUPER-8-1 1 ACS/WFC ACCUM WFC1-CTE F814W 2 none none none 1 1346.0 S SUPER-8-1 1 ACS/WFC ACCUM WFC1-CTE F814W 3 none none none 2 1394.0 S SUPER-8-1 1 ACS/WFC ACCUM WFC1-CTE F814W 4 none none none 2 1394.0 S 14652( 5) - 26-Sep-2016 21:05:41 - [ 6] Visit: 02 (Super-8-2) 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 SUPER-8-2 ACS/WFC ACCUM WFC1-CTE F814W 1 1300 S PATTERN 1 1 see below (5215 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 | ------------------------------------------------------------------------------------------------------------------------------------ SUPER-8-2 1 ACS/WFC ACCUM WFC1-CTE F814W 1 none none none 1 1207.0 S SUPER-8-2 1 ACS/WFC ACCUM WFC1-CTE F814W 2 none none none 1 1304.0 S SUPER-8-2 1 ACS/WFC ACCUM WFC1-CTE F814W 3 none none none 2 1352.0 S SUPER-8-2 1 ACS/WFC ACCUM WFC1-CTE F814W 4 none none none 2 1352.0 S 14652( 5) - 26-Sep-2016 21:05:41 - [ 7] Visit: 03 (Super-8-3) 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 SUPER-8-3 ACS/WFC ACCUM WFC1-CTE F814W 1 1300 S PATTERN 1 1 see below (5304 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 | ------------------------------------------------------------------------------------------------------------------------------------ SUPER-8-3 1 ACS/WFC ACCUM WFC1-CTE F814W 1 none none none 1 1230.0 S SUPER-8-3 1 ACS/WFC ACCUM WFC1-CTE F814W 2 none none none 1 1326.0 S SUPER-8-3 1 ACS/WFC ACCUM WFC1-CTE F814W 3 none none none 2 1374.0 S SUPER-8-3 1 ACS/WFC ACCUM WFC1-CTE F814W 4 none none none 2 1374.0 S 14652( 5) - 26-Sep-2016 21:05:41 - [ 8] Visit: 04 (Super-8-4) 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 SUPER-8-4 ACS/WFC ACCUM WFC1-CTE F814W 1 1300 S PATTERN 1 1 see below (5212 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 | ------------------------------------------------------------------------------------------------------------------------------------ SUPER-8-4 1 ACS/WFC ACCUM WFC1-CTE F814W 1 none none none 1 1178.0 S SUPER-8-4 1 ACS/WFC ACCUM WFC1-CTE F814W 2 none none none 1 1332.0 S SUPER-8-4 1 ACS/WFC ACCUM WFC1-CTE F814W 3 none none none 2 1351.0 S SUPER-8-4 1 ACS/WFC ACCUM WFC1-CTE F814W 4 none none none 2 1351.0 S 14652( 5) - 26-Sep-2016 21:05:41 - [ 9] Visit: 05 (BORG-0116+1425-747) 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 BORG-0116+1 ACS/WFC ACCUM WFC1-CTE F814W 1 1300 S PATTERN 1 1 425-747 see below (5207 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 | ------------------------------------------------------------------------------------------------------------------------------------ BORG-0116+1425-747 1 ACS/WFC ACCUM WFC1-CTE F814W 1 none none none 1 1205.0 S BORG-0116+1425-747 1 ACS/WFC ACCUM WFC1-CTE F814W 2 none none none 1 1302.0 S BORG-0116+1425-747 1 ACS/WFC ACCUM WFC1-CTE F814W 3 none none none 2 1350.0 S BORG-0116+1425-747 1 ACS/WFC ACCUM WFC1-CTE F814W 4 none none none 2 1350.0 S 14652( 5) - 26-Sep-2016 21:05:41 - [ 10] Visit: 06 (BORG-2229-0945-548) 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 BORG-2229-0 ACS/WFC ACCUM WFC1-CTE F814W 1 1300 S PATTERN 1 1 945-548 see below (5196 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 | ------------------------------------------------------------------------------------------------------------------------------------ BORG-2229-0945-548 1 ACS/WFC ACCUM WFC1-CTE F814W 1 none none none 1 1203.0 S BORG-2229-0945-548 1 ACS/WFC ACCUM WFC1-CTE F814W 2 none none none 1 1299.0 S BORG-2229-0945-548 1 ACS/WFC ACCUM WFC1-CTE F814W 3 none none none 2 1347.0 S BORG-2229-0945-548 1 ACS/WFC ACCUM WFC1-CTE F814W 4 none none none 2 1347.0 S 14652( 5) - 26-Sep-2016 21:05:41 - [ 11] Visit: 07 (BORG-1152+3402-912) 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 BORG-1152+3 ACS/WFC ACCUM WFC1-CTE F814W 1 1300 S PATTERN 1 1 402-912 see below (5260 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 | ------------------------------------------------------------------------------------------------------------------------------------ BORG-1152+3402-912 1 ACS/WFC ACCUM WFC1-CTE F814W 1 none none none 1 1219.0 S BORG-1152+3402-912 1 ACS/WFC ACCUM WFC1-CTE F814W 2 none none none 1 1315.0 S BORG-1152+3402-912 1 ACS/WFC ACCUM WFC1-CTE F814W 3 none none none 2 1363.0 S BORG-1152+3402-912 1 ACS/WFC ACCUM WFC1-CTE F814W 4 none none none 2 1363.0 S 14652( 5) - 26-Sep-2016 21:05:41 - [ 12] Visit: 08 (BORG-0853+0310-145) 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 BORG-0853+0 ACS/WFC ACCUM WFC1-CTE F814W 1 1300 S PATTERN 1 1 310-145 see below (5191 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 | ------------------------------------------------------------------------------------------------------------------------------------ BORG-0853+0310-145 1 ACS/WFC ACCUM WFC1-CTE F814W 1 none none none 1 1201.0 S BORG-0853+0310-145 1 ACS/WFC ACCUM WFC1-CTE F814W 2 none none none 1 1298.0 S BORG-0853+0310-145 1 ACS/WFC ACCUM WFC1-CTE F814W 3 none none none 2 1346.0 S BORG-0853+0310-145 1 ACS/WFC ACCUM WFC1-CTE F814W 4 none none none 2 1346.0 S 14652( 5) - 26-Sep-2016 21:05:41 - [ 13] Summary Form for Proposal 14652 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures WFC1-CTE ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/WFC ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements PATTERN 1 1 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F814W ------------------------------------------------------------------------------------------------------------------------------------ Target Names BORG-0116+1425-747, BORG-0853+0310-145, BORG-1152+3402-912, BORG-2229-0945-548, SUPER-8-1, SUPER-8-2, SUPER-8-3, SUPER-8-4 ------------------------------------------------------------------------------------------------------------------------------------