14083( 3) - 23-Jul-2015 16:30:33 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 14083 Version: 3 Check-in Time: 23-Jul-2015 16:30:33 STScI Edit Number: 0 Title The nature and environment of the most luminous starburst galaxies at redshift > 5 ------------------------------------------------------------------------------------ Type Cycle GO 23 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Ismael Perez-Fournon Instituto de Astrofisica de Canarias Y CoI: Dr. Julie Wardlow University of Copenhagen, Niels Bohr N Institute CoI: Rui Marques-Chaves Instituto de Astrofisica de Canarias N CoI: Paloma Martinez-Navajas Instituto de Astrofisica de Canarias N CoI: Prof. Asantha Cooray University of California - Irvine N CoI: Dr. Alexander Conley University of Colorado at Boulder N CoI: Viktoria Asboth University of British Columbia N CoI: Dr. Dominik A. Riechers Cornell University N CoI: Dr. Dave Clements Imperial College of Science Technology and N Medicine CoI: Dr. Duncan Farrah Virginia Polytechnic Institute and State N University CoI: Dr. Helmut Dannerbauer University of Vienna N CoI: Dr. Hai Fu University of Iowa N CoI: Jae Alyson Calanog University of California - Irvine N CoI: Prof. Rob Ivison Royal Observatory Edinburgh N CoI: Dr. Nicolas Laporte Pontificia Universidad Catolica de Chile N CoI: Dr. Seb Oliver University of Sussex N ------------------------------------------------------------------------------------ Abstract We propose HST WFC3 imaging of the brightest three recently discovered, dusty star forming galaxies at z > 5, selected from the Herschel HerMES survey and with CO redshifts measured with ALMA in a cycle 2 program. Theoretically, the existence of dusty, massive startbursts at such early epochs is difficult to explain and thorough observational constraints on their properties provides a stringent test of galaxy formation models. Our targets have a multitude of far-infrared follow-up data, including SMA and NOEMA observations and the CO spectroscopy in the 3mm ALMA band that revealed their extreme redshifts. However, the currently available ground-based, near-IR observations are shallow and lack the resolution and sensitivity of HST at these wavelengths, which is needed to completely reveal these rare galaxies, and to measure any gravitational lensing amplification. We will use the proposed data to measure the physical properties of these three z > 5 dusty starbursts, including their sizes, stellar masses, and the scale and intensity of the star formation. There is also evidence of gravitational lensing and the HST data are crucial for accurately measuring the lensing amplification and reconstructing the source plane. The wider field data will be used to investigate the environments of these galaxies and determine whether they are protocluster members, as often expected of massive high-redshift galaxies and similarly to some other z ~ 4 - 5 starbursts. We will be able to measure the dark matter halo mass scale and thereby consider the evolution and descendent of these galaxies, particularly in comparison with lower redshift dusty starbursts. 14083( 3) - 23-Jul-2015 16:30:33 - [ 2] ------------------------------------------------------------------------------------ Observations Description ------------------------ We require WFC3 observations with the F105W and F160W filters of three dusty z>5 target galaxies. For all three targets WFC3 observations in each filter will be completed in a single orbit. (Total = 6 WFC3 orbits) For the WFC3 observations we calculate predicted F105W and F160W fluxes of our targets by scaling the SED of Arp220 to the observed farinfrared fluxes, fixed to the CO redshifts. As described in the proposal, there is some exvidence of the targets being marginally resolved in existing low SNR data, and therefore the required WFC3 exposure times are ~4x those calculated from the fluxes alone, and ~4x those in each of the ETC references. There are no constraints on observing date or orientation. ------------------------------------------------------------------------------------ 14083( 3) - 23-Jul-2015 16:30:33 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 RARE-HELMS-3 GALAXY, ULTRALUMINOUS RA=00H22M20.8080S, J2000 V = 25 4 IR GAL DEC=-01D55'20.90" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 2 RARE-HELMS-6 GALAXY, ULTRALUMINOUS RA=00H27M39.2380S, J2000 V = 25 5 IR GAL DEC=-02D07'49.34" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 3 RARE-XMM-30 GALAXY, ULTRALUMINOUS RA=02H26M56.5610S, J2000 V = 25 IR GAL DEC=-03D27'8.69" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 14083( 3) - 23-Jul-2015 16:30:33 - [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 14083( 3) - 23-Jul-2015 16:30:33 - [ 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| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 RARE-HELMS- WFC3/IR MULTIAC IR F160W SAMP-SEQ=SPARS100, NSAMP=7 1 DEF PATTERN 1 1 34 CUM (2411.737 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 RARE-HELMS- WFC3/IR MULTIAC IR F160W NSAMP=7, SAMP-SEQ=SPARS25 1 DEF 34 CUM (152.935 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 RARE-HELMS- WFC3/IR MULTIAC IR F105W NSAMP=7, SAMP-SEQ=SPARS100 1 DEF PATTERN 1 3 34 CUM (2411.737 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 RARE-HELMS- WFC3/IR MULTIAC IR F105W NSAMP=12, SAMP-SEQ=SPARS25 1 DEF 34 CUM (277.938 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 | ------------------------------------------------------------------------------------------------------------------------------------ RARE-HELMS-34 1 WFC3/IR MULTIAC IR F160W 1 none none none 1 N/A CUM RARE-HELMS-34 1 WFC3/IR MULTIAC IR F160W 2 none none none 1 N/A CUM RARE-HELMS-34 1 WFC3/IR MULTIAC IR F160W 3 none none none 1 N/A CUM RARE-HELMS-34 1 WFC3/IR MULTIAC IR F160W 4 none none none 1 N/A CUM RARE-HELMS-34 2 WFC3/IR MULTIAC IR F160W none none none none 1 N/A CUM RARE-HELMS-34 3 WFC3/IR MULTIAC IR F105W 1 none none none 2 N/A CUM RARE-HELMS-34 3 WFC3/IR MULTIAC IR F105W 2 none none none 2 N/A CUM RARE-HELMS-34 3 WFC3/IR MULTIAC IR F105W 3 none none none 2 N/A CUM RARE-HELMS-34 3 WFC3/IR MULTIAC IR F105W 4 none none none 2 N/A CUM RARE-HELMS-34 4 WFC3/IR MULTIAC IR F105W none none none none 2 N/A CUM 14083( 3) - 23-Jul-2015 16:30:33 - [ 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| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 RARE-HELMS- WFC3/IR MULTIAC IR F160W SAMP-SEQ=SPARS100, NSAMP=7 1 DEF PATTERN 1 1 65 CUM (2411.737 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 RARE-HELMS- WFC3/IR MULTIAC IR F160W NSAMP=7, SAMP-SEQ=SPARS25 1 DEF 65 CUM (152.935 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 RARE-HELMS- WFC3/IR MULTIAC IR F105W NSAMP=7, SAMP-SEQ=SPARS100 1 DEF PATTERN 1 3 65 CUM (2411.737 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 RARE-HELMS- WFC3/IR MULTIAC IR F105W NSAMP=12, SAMP-SEQ=SPARS25 1 DEF 65 CUM (277.938 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 | ------------------------------------------------------------------------------------------------------------------------------------ RARE-HELMS-65 1 WFC3/IR MULTIAC IR F160W 1 none none none 1 N/A CUM RARE-HELMS-65 1 WFC3/IR MULTIAC IR F160W 2 none none none 1 N/A CUM RARE-HELMS-65 1 WFC3/IR MULTIAC IR F160W 3 none none none 1 N/A CUM RARE-HELMS-65 1 WFC3/IR MULTIAC IR F160W 4 none none none 1 N/A CUM RARE-HELMS-65 2 WFC3/IR MULTIAC IR F160W none none none none 1 N/A CUM RARE-HELMS-65 3 WFC3/IR MULTIAC IR F105W 1 none none none 2 N/A CUM RARE-HELMS-65 3 WFC3/IR MULTIAC IR F105W 2 none none none 2 N/A CUM RARE-HELMS-65 3 WFC3/IR MULTIAC IR F105W 3 none none none 2 N/A CUM RARE-HELMS-65 3 WFC3/IR MULTIAC IR F105W 4 none none none 2 N/A CUM RARE-HELMS-65 4 WFC3/IR MULTIAC IR F105W none none none none 2 N/A CUM 14083( 3) - 23-Jul-2015 16:30:33 - [ 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| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 RARE-XMM-30 WFC3/IR MULTIAC IR F160W SAMP-SEQ=SPARS100, NSAMP=7 1 DEF PATTERN 1 1 CUM (2411.737 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 RARE-XMM-30 WFC3/IR MULTIAC IR F160W NSAMP=7, SAMP-SEQ=SPARS25 1 DEF CUM (152.935 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 RARE-XMM-30 WFC3/IR MULTIAC IR F105W NSAMP=7, SAMP-SEQ=SPARS100 1 DEF PATTERN 1 3 CUM (2411.737 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 RARE-XMM-30 WFC3/IR MULTIAC IR F105W NSAMP=12, SAMP-SEQ=SPARS25 1 DEF CUM (277.938 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 | ------------------------------------------------------------------------------------------------------------------------------------ RARE-XMM-30 1 WFC3/IR MULTIAC IR F160W 1 none none none 1 N/A CUM RARE-XMM-30 1 WFC3/IR MULTIAC IR F160W 2 none none none 1 N/A CUM RARE-XMM-30 1 WFC3/IR MULTIAC IR F160W 3 none none none 1 N/A CUM RARE-XMM-30 1 WFC3/IR MULTIAC IR F160W 4 none none none 1 N/A CUM RARE-XMM-30 2 WFC3/IR MULTIAC IR F160W none none none none 1 N/A CUM RARE-XMM-30 3 WFC3/IR MULTIAC IR F105W 1 none none none 2 N/A CUM RARE-XMM-30 3 WFC3/IR MULTIAC IR F105W 2 none none none 2 N/A CUM RARE-XMM-30 3 WFC3/IR MULTIAC IR F105W 3 none none none 2 N/A CUM RARE-XMM-30 3 WFC3/IR MULTIAC IR F105W 4 none none none 2 N/A CUM RARE-XMM-30 4 WFC3/IR MULTIAC IR F105W none none none none 2 N/A CUM 14083( 3) - 23-Jul-2015 16:30:33 - [ 8] Summary Form for Proposal 14083 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures IR ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/IR ------------------------------------------------------------------------------------------------------------------------------------ Opmodes MULTIACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters NSAMP=12, NSAMP=7, SAMP-SEQ=SPARS100, SAMP-SEQ=SPARS25 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements PATTERN 1 1, PATTERN 1 3 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F105W, F160W ------------------------------------------------------------------------------------------------------------------------------------ Target Names RARE-HELMS-34, RARE-HELMS-65, RARE-XMM-30 ------------------------------------------------------------------------------------------------------------------------------------