12329( 3) - 02-Aug-2010 12:42:01 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 12329 Version: 3 Check-in Time: 02-Aug-2010 12:42:01 STScI Edit Number: 0 Title Physical Properties of Spectroscopically Confirmed Galaxies at 5.7 6 using both space and ground?based telescopes. The Subaru Deep Field (SDF) project has been very successful in searching for high?redshift galaxies. It has spectroscopically identified more than 100 galaxies at z > 5.7 (i.e., the majority of the currently confirmed galaxies at z > 5.7 are in this field), and thus is an ideal field to study physical properties of distant galaxies. Here we propose to carry out deep IRAC imaging of SDF with 12 telescope pointings. When combined with the existing data from our previous program, the new data will cover 90% of the known SDF galaxies at z > 5.7 to a depth of 5?6 hours or 0.12 uJy (3 sigma). As joint Spitzer/HST observations, we also propose to obtain deep HST WFC3 F125W? and F160W?band images of a representative sample of galaxies. The WFC3 data provides rest?frame UV photometry to decipher the properties of young stellar populations, while the IRAC data measure the amplitude of the Balmer break and constrain the properties of mature populations. With the proposed observations we will be able to characterize the physical properties of these highest?redshift galaxies known so far, and obtain accurate information of stellar masses, ages, star formation histories, etc. This helps us to understand the earliest galaxy formation and evolution and the galaxy contribution to cosmic reionization. We will also specifically address the following questions: (1) Do Lyman alpha emitters and Lyman break galaxies represent physically two different galaxy populations at z > 6; (2) Is the Lyman alpha emission systematically suppressed at z > 6 with respect to the continuum emission, or, are we reaching the epoch of cosmic reionization; (3) Do we see any sign of abnormally young stellar population at z > 6. The data obtained through this program will have a legacy value for high?redshift studies in general. ------------------------------------------------------------------------------------ Observations Description ------------------------ Our observing strategy is straightforward. We will observe 20 spectroscopically-confirmed galaxies at z >= 6 in the Subaru Deep Field (13h274m, 27d30m) using five HST pointings. Each pointing will be observed in two WFC3 bands F125W and F160W, with one orbit per band. According to our existing WFC3 data, these galaxies likely span a large magnitude range of 25 < J_AB < 27, but WFC3 is able to detect the faintest one of them with one orbit integration. Therefore we request a total of 10 orbits. These galaxies were chosen so that they can be observed within five HST pointings regardless of 12329( 3) - 02-Aug-2010 12:42:01 - [ 2] rolling angles. We do not have any scheduling constraints or special requirements. Real Time Justification ----------------------- None. Calibration Justification ------------------------- None. Additional Comments ------------------- None. ------------------------------------------------------------------------------------ 12329( 3) - 02-Aug-2010 12:42:01 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 SDF01 GALAXY, HIGH REDSHIFT RA=13H23M46.0000S +/- 0.1", J2000 Z = 6 J_AB=25-27 GALAXY DEC=+27D24'36.00" +/- 0.1" Reference Frame: ICRS Comments: Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 0.0 0 0 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 2 SDF02 GALAXY, HIGH REDSHIFT RA=13H24M31.0000S +/- 0.1", J2000 Z = 6 J_AB=25-27 GALAXY DEC=+27D30'18.00" +/- 0.1" Reference Frame: ICRS Comments: Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 0.0 0 0 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 3 SDF03 GALAXY, HIGH REDSHIFT RA=13H24M17.5000S +/- 0.1", J2000 Z = 6 J_AB=25-27 GALAXY DEC=+27D16'58.00" +/- 0.1" Reference Frame: ICRS Comments: Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 0.0 0 0 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 4 SDF04 GALAXY, HIGH REDSHIFT RA=13H24M41.5000S +/- 0.1", J2000 Z = 6 J_AB=25-27 GALAXY DEC=+27D26'23.00" +/- 0.1" Reference Frame: ICRS Comments: Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 0.0 0 0 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 5 SDF05 GALAXY, HIGH REDSHIFT RA=13H24M57.0000S +/- 0.1", J2000 Z = 6 J_AB=25-27 GALAXY DEC=+27D39'41.00" +/- 0.1" Reference Frame: ICRS Comments: Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 0.0 0 0 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 12329( 3) - 02-Aug-2010 12:42:01 - [ 4] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 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 ------------------------------------------------------------------------------------------------------------------------------------ 12329( 3) - 02-Aug-2010 12:42:01 - [ 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| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 SDF01 WFC3/IR MULTIAC IR-FIX F125W NSAMP=14, SAMP-SEQ=SPARS50 1 DEF PATTERN 1 1 CUM ------------------------------------------------------------------------------------------------------------------------------------ 2 SDF01 WFC3/IR MULTIAC IR-FIX F160W NSAMP=14, SAMP-SEQ=SPARS50 1 DEF PATTERN 1 2 CUM ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDF01 1 WFC3/IR MULTIAC IR-FIX F125W 1 none none none 1 N/A CUM SDF01 1 WFC3/IR MULTIAC IR-FIX F125W 2 none none none 1 N/A CUM SDF01 1 WFC3/IR MULTIAC IR-FIX F125W 3 none none none 1 N/A CUM SDF01 1 WFC3/IR MULTIAC IR-FIX F125W 4 none none none 1 N/A CUM SDF01 2 WFC3/IR MULTIAC IR-FIX F160W 1 none none none 2 N/A CUM SDF01 2 WFC3/IR MULTIAC IR-FIX F160W 2 none none none 2 N/A CUM SDF01 2 WFC3/IR MULTIAC IR-FIX F160W 3 none none none 2 N/A CUM SDF01 2 WFC3/IR MULTIAC IR-FIX F160W 4 none none none 2 N/A CUM 12329( 3) - 02-Aug-2010 12:42:01 - [ 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| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 SDF02 WFC3/IR MULTIAC IR-FIX F125W NSAMP=14, SAMP-SEQ=SPARS50 1 DEF GS ACQ SCENARIO BASE1B3; CUM PATTERN 1 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 SDF02 WFC3/IR MULTIAC IR-FIX F160W NSAMP=14, SAMP-SEQ=SPARS50 1 DEF PATTERN 1 2 CUM ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDF02 1 WFC3/IR MULTIAC IR-FIX F125W 1 none none none 1 N/A CUM SDF02 1 WFC3/IR MULTIAC IR-FIX F125W 2 none none none 1 N/A CUM SDF02 1 WFC3/IR MULTIAC IR-FIX F125W 3 none none none 1 N/A CUM SDF02 1 WFC3/IR MULTIAC IR-FIX F125W 4 none none none 1 N/A CUM SDF02 2 WFC3/IR MULTIAC IR-FIX F160W 1 none none none 2 N/A CUM SDF02 2 WFC3/IR MULTIAC IR-FIX F160W 2 none none none 2 N/A CUM SDF02 2 WFC3/IR MULTIAC IR-FIX F160W 3 none none none 2 N/A CUM SDF02 2 WFC3/IR MULTIAC IR-FIX F160W 4 none none none 2 N/A CUM 12329( 3) - 02-Aug-2010 12:42:01 - [ 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| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 SDF03 WFC3/IR MULTIAC IR-FIX F125W NSAMP=14, SAMP-SEQ=SPARS50 1 DEF PATTERN 1 1 CUM ------------------------------------------------------------------------------------------------------------------------------------ 2 SDF03 WFC3/IR MULTIAC IR-FIX F160W NSAMP=14, SAMP-SEQ=SPARS50 1 DEF PATTERN 1 2 CUM ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDF03 1 WFC3/IR MULTIAC IR-FIX F125W 1 none none none 1 N/A CUM SDF03 1 WFC3/IR MULTIAC IR-FIX F125W 2 none none none 1 N/A CUM SDF03 1 WFC3/IR MULTIAC IR-FIX F125W 3 none none none 1 N/A CUM SDF03 1 WFC3/IR MULTIAC IR-FIX F125W 4 none none none 1 N/A CUM SDF03 2 WFC3/IR MULTIAC IR-FIX F160W 1 none none none 2 N/A CUM SDF03 2 WFC3/IR MULTIAC IR-FIX F160W 2 none none none 2 N/A CUM SDF03 2 WFC3/IR MULTIAC IR-FIX F160W 3 none none none 2 N/A CUM SDF03 2 WFC3/IR MULTIAC IR-FIX F160W 4 none none none 2 N/A CUM 12329( 3) - 02-Aug-2010 12:42:01 - [ 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| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 SDF04 WFC3/IR MULTIAC IR-FIX F125W NSAMP=14, SAMP-SEQ=SPARS50 1 DEF GS ACQ SCENARIO ONEB1B3; CUM PATTERN 1 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 SDF04 WFC3/IR MULTIAC IR-FIX F160W NSAMP=14, SAMP-SEQ=SPARS50 1 DEF PATTERN 1 2 CUM ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDF04 1 WFC3/IR MULTIAC IR-FIX F125W 1 none none none 1 N/A CUM SDF04 1 WFC3/IR MULTIAC IR-FIX F125W 2 none none none 1 N/A CUM SDF04 1 WFC3/IR MULTIAC IR-FIX F125W 3 none none none 1 N/A CUM SDF04 1 WFC3/IR MULTIAC IR-FIX F125W 4 none none none 1 N/A CUM SDF04 2 WFC3/IR MULTIAC IR-FIX F160W 1 none none none 2 N/A CUM SDF04 2 WFC3/IR MULTIAC IR-FIX F160W 2 none none none 2 N/A CUM SDF04 2 WFC3/IR MULTIAC IR-FIX F160W 3 none none none 2 N/A CUM SDF04 2 WFC3/IR MULTIAC IR-FIX F160W 4 none none none 2 N/A CUM 12329( 3) - 02-Aug-2010 12:42:01 - [ 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| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 SDF05 WFC3/IR MULTIAC IR-FIX F125W NSAMP=14, SAMP-SEQ=SPARS50 1 DEF GS ACQ SCENARIO ONEB1B3; CUM PATTERN 1 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 SDF05 WFC3/IR MULTIAC IR-FIX F160W NSAMP=14, SAMP-SEQ=SPARS50 1 DEF PATTERN 1 2 CUM ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDF05 1 WFC3/IR MULTIAC IR-FIX F125W 1 none none none 1 N/A CUM SDF05 1 WFC3/IR MULTIAC IR-FIX F125W 2 none none none 1 N/A CUM SDF05 1 WFC3/IR MULTIAC IR-FIX F125W 3 none none none 1 N/A CUM SDF05 1 WFC3/IR MULTIAC IR-FIX F125W 4 none none none 1 N/A CUM SDF05 2 WFC3/IR MULTIAC IR-FIX F160W 1 none none none 2 N/A CUM SDF05 2 WFC3/IR MULTIAC IR-FIX F160W 2 none none none 2 N/A CUM SDF05 2 WFC3/IR MULTIAC IR-FIX F160W 3 none none none 2 N/A CUM SDF05 2 WFC3/IR MULTIAC IR-FIX F160W 4 none none none 2 N/A CUM 12329( 3) - 02-Aug-2010 12:42:01 - [ 10] Summary Form for Proposal 12329 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures IR-FIX ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/IR ------------------------------------------------------------------------------------------------------------------------------------ Opmodes MULTIACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters NSAMP=14, SAMP-SEQ=SPARS50 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements GS ACQ SCENARIO BASE1B3, GS ACQ SCENARIO ONEB1B3, PATTERN 1 1, PATTERN 1 2 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F125W, F160W ------------------------------------------------------------------------------------------------------------------------------------ Target Names SDF01, SDF02, SDF03, SDF04, SDF05 ------------------------------------------------------------------------------------------------------------------------------------