0 Assigned ID: 214 ----- Attempting Submission 1 (Thu Apr 10 17:18:26 GMT 2014) ----- HST Phase I Proposal 214 (hermeshighz.apt) successfully submitted. ----- Attempting Submission 2 (Fri Apr 11 13:43:27 GMT 2014) ----- HST Phase I Proposal 214 (hermeshighz_aptn.apt) successfully submitted. ----- Attempting Submission 3 (Fri Apr 11 22:39:02 GMT 2014) ----- HST Phase I Proposal 214 (hermeshighz_aptn.apt) successfully submitted. ----- Attempting Submission 4 (Fri Apr 11 22:58:12 GMT 2014) ----- Updated WFC3 observations to reflect recommendations from Linda Dressel regarding additional restrictions for zodiacal background, and placing the F105W observations in the center of the orbits to minimise the background. 2109998669 ----- Attempting Submission 2 (Thu Aug 21 14:52:58 GMT 2014) ----- The nature and environment of the earliest dusty starburst galaxies We propose HST ACS and WFC3 imaging of four of the brightest spectroscopically confirmed dusty starburst galaxies at z=4.2 to z=5.3. 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 were selected from the Herschel-HerMES survey and have a multitude of far-infrared follow-up data, including the CO spectroscopy that revealed their extreme redshifts. However, deep optical and near-IR observations are currently lacking and we require the resolution and sensitivity of HST at these wavelengths to completely reveal these rare galaxies. We will use the proposed data to measure the physical properties of four z>4 dusty starbursts, including their sizes, stellar masses, and the scale and mode 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 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. Observing_Description: We require WFC3 observations with the F105W and F160W filters of four dusty z>4 target galaxies. For three of the targets WFC3 observations in both filters will be completed in a single orbit per target. The final target requires two WFC3 orbits. (Total = 5 WFC3 orbits) We also require ACS F435W observations for three of the four targets to definitively identify any foreground galaxies, which may be gravitationally lensing the z>4 starburst galaxies. These observations require one orbit per target. (Total = 3 ACS orbits). For the WFC3 observations we calculate predicted F105W and F160W fluxes of our targets by scaling the SED of Arp220 to the observed far-infrared 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. The z>4 SMGs will be undeteced in the ACS observations (due to the redshift and the lyman limit), instead those observations aim to characterise any foreground lensing galaxies. Therefore, the predicted fluxes in the ACS/F435W images are estimated based on non-dusty galaxy SEDs at z = 2, scaled to the flux of the faintest detected stellar components. As described in the proposal, the possible foreground galaxy in exisiting RARE-LSW-102 observations is also marginally resolved and therefore also requires ~4x the exposure calculated from the fluxes alone and in the ETC reference. There are no constraints on observing date or orientation. COSMOLOGY Default false false false false false SUPPORTED GALAXY HIGH REDSHIFT GALAXY STARBURST F435W flux is estimated for a foreground lens (z=2 assumed) rather than the z~5 target. HLOCK02 1HERMES-S250-J104050.5+560652 J2000 J2000 F435W expected =25.5 ABmag, F105W expected=24.1 ABmag, F160W expected =23.4 ABmag GALAXY HIGH REDSHIFT GALAXY STARBURST FLS107 1HERMES-S250-J170817.6+582845 J2000 J2000 F105W expected = 24.6 ABmag, F160W expected = 23.9 ABmag GALAXY HIGH REDSHIFT GALAXY STARBURST F435W flux is estimated for a foreground lens (z=2 assumed) rather than the z~5 target. J2000 J2000 F435W expected = 26.7 ABmag, F105W expected = 24.0 ABmag, F160W expected= 23.2 ABmag GALAXY HIGH REDSHIFT GALAXY STARBURST F435W flux is estimated for a foreground lens (z=2 assumed) rather than the z~5 target. J2000 J2000 F435W expected = 26.7 ABmag, F105W expected = 24.0 ABmag, F160W expected = 23.2 ABmag WFC3/IR Imaging No No F105W WFC3/IR Imaging No No F160W WFC3/IR Imaging No No F105W WFC3/IR Imaging No No F160W WFC3/IR Imaging No No F105W WFC3/IR Imaging No No F160W WFC3/IR Imaging No No F105W WFC3/IR Imaging No No F160W ACS/WFC Imaging No No F435W ACS/WFC Imaging No No F435W ACS/WFC Imaging No No F435W POS-TARG DITHER 0.572 LINE 0.365 false false 74.653 4 18.528 WFC3-IR-DITHER-BOX-MIN 2 false POS-TARG DITHER 0.265 LINE 0.187 false false 69.05 4 20.67 ACS-WFC-DITHER-BOX 1 false The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. /Users/jwardlow/proposals/hst/cyc22_hermeshighz/OP-cache/phase2_hermeshighz_v2-v01.xml WFC3/F105W and F160W observations of RARE-LSW-102 (Tic-Visit :proposal-id 13718 :visit-id "01" :proposal-version -1 :trans-version "20140605" :date "21-Aug-2014 16:18:29.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1183808 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13718 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13718 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 3100 :al-overhead-at-end 0 :internal-dur-at-end 538 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3470 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. /Users/jwardlow/proposals/hst/cyc22_hermeshighz/OP-cache/phase2_hermeshighz_v2-v02.xml WFC3/F105W and F160W observations of RARE-FLS-1 (Tic-Visit :proposal-id 13718 :visit-id "02" :proposal-version -1 :trans-version "20140605" :date "21-Aug-2014 16:36:38.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1305648 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13718 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13718 :visit-id "02" :orbit-number 1 :pcs-time 333 :si-vis-utilization 3081 :al-overhead-at-end 0 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3470 :pcs-gap 0 ) (Tic-Orbit :proposal-id 13718 :visit-id "02" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3181 :al-overhead-at-end 0 :internal-dur-at-end 576 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3470 :pcs-gap 0 ) true 2 0 The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. /Users/jwardlow/proposals/hst/cyc22_hermeshighz/OP-cache/phase2_hermeshighz_v2-v03.xml WFC3/F105W and F160W observations of RARE-HELMS-10 (Tic-Visit :proposal-id 13718 :visit-id "03" :proposal-version -1 :trans-version "20140605" :date "21-Aug-2014 16:26:49.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1444944 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13718 :visit-id "03" :obset-id "03" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13718 :visit-id "03" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2875 :al-overhead-at-end 0 :internal-dur-at-end 709 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3222 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. /Users/jwardlow/proposals/hst/cyc22_hermeshighz/OP-cache/phase2_hermeshighz_v2-v04.xml WFC3/F105W and F160W observations of RARE-HELMS-28 (Tic-Visit :proposal-id 13718 :visit-id "04" :proposal-version -1 :trans-version "20140605" :date "21-Aug-2014 16:33:11.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1444944 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13718 :visit-id "04" :obset-id "04" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13718 :visit-id "04" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2875 :al-overhead-at-end 0 :internal-dur-at-end 709 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3222 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. /Users/jwardlow/proposals/hst/cyc22_hermeshighz/OP-cache/phase2_hermeshighz_v2-v05.xml ACS/F435W observations of RARE-LSW-102 (Tic-Visit :proposal-id 13718 :visit-id "05" :proposal-version -1 :trans-version "20140605" :date "21-Aug-2014 09:55:04.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "27" :si-bright-earth-limb-angle 20.0 :data-volume 1136896 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13718 :visit-id "05" :obset-id "05" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13718 :visit-id "05" :orbit-number 1 :pcs-time 333 :si-vis-utilization 3134 :al-overhead-at-end 0 :internal-dur-at-end 347 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3470 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. /Users/jwardlow/proposals/hst/cyc22_hermeshighz/OP-cache/phase2_hermeshighz_v2-v06.xml ACS/F435W observations of RARE-HELMS-10 (Tic-Visit :proposal-id 13718 :visit-id "06" :proposal-version -1 :trans-version "20140605" :date "21-Aug-2014 09:55:05.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "27" :si-bright-earth-limb-angle 20.0 :data-volume 1136896 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13718 :visit-id "06" :obset-id "06" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13718 :visit-id "06" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2886 :al-overhead-at-end 0 :internal-dur-at-end 347 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3222 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. /Users/jwardlow/proposals/hst/cyc22_hermeshighz/OP-cache/phase2_hermeshighz_v2-v07.xml ACS/F435W observations of RARE-HELMS-28 (Tic-Visit :proposal-id 13718 :visit-id "07" :proposal-version -1 :trans-version "20140605" :date "21-Aug-2014 09:55:05.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "27" :si-bright-earth-limb-angle 20.0 :data-volume 1136896 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13718 :visit-id "07" :obset-id "07" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13718 :visit-id "07" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2886 :al-overhead-at-end 0 :internal-dur-at-end 347 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3222 :pcs-gap 0 ) true 1 0