0 Assigned ID: 2109 ----- Attempting Submission 1 (Sat Mar 02 01:36:04 GMT 2013) ----- HST Phase I Proposal 2109 (ak_wfc3_cycle21.apt) successfully submitted. ----- Attempting Submission 2 (Sat Mar 02 01:49:34 GMT 2013) ----- HST Phase I Proposal 2109 (ak_wfc3_cycle21.apt) successfully submitted. ----- Attempting Submission 3 (Sat Mar 02 01:52:02 GMT 2013) ----- As advised by our PC we have included a time constraint for visit 1 (not to be executed later than June 3 2014) in order to keep the background (introduced by increasing zodiacal light) lo for our faint high-redshift targets. Upon decision by the TTRB based on our formal request we have been granted the opportunity for coordinated parallel use of ACS (filter F814W). This Phase II re-submission now includes the observing instructions for the originally proposed primary science part of this program, i.e. WFC3/IR observations using two broad filters as well as those for the coordinated parallels. No significant chances are requested or have been applied for the primary part of our observations. 1936557195 ----- Attempting Submission 1 (Thu Jun 27 10:36:03 GMT 2013) ----- HST Phase II Proposal 13294 (ak_wfc3_cycle21_13294_phaseII.apt) successfully submitted. ----- Attempting Submission 2 (Wed Jul 10 10:03:53 GMT 2013) ----- ----- Attempting Submission 3 (Fri Dec 13 11:15:12 GMT 2013) ----- Characterizing the formation of the primordial red sequence We request six orbits of HST/WFC3-IR to complement existing CANDELS imaging for a detailed and direct study of the formation properties of the very first massive red sequence galaxies. Our unique sample of millimeter-identified starbursts with spectroscopically confirmed redshifts z>4 is the prime testbed to probe the formation process of massive galaxies in the very early Universe. Given the complicated selection methods to reveal such sources, only recently the vast multi-wavelength coverage of the COSMOS field has allowed to establish this uniquely representative sample of the earliest population of massive starbursts. Their number density has been shown to match that of the very early (z~2) red sequence of massive and intriguingly compact galaxies, hinting to a direct evolutionary link of both populations. In order to establish this link -- particularly that our starbursts are prone to produce a compact remnant -- we need to thoroughly probe both, the heavily obscured regions within these generally dust-rich sources as well as the relatively unobscured patches. Scheduled high-resolution ALMA observations will yield detailed dynamics and direct views of the dust distribution within our targets. However, the high resolution WFC3-IR reaches at rest-frame (near) ultraviolet wavelengths is the only way to allow for a full view of the star formation activity and, for determining the detailed dust extinction processes across our targets. The combined data will yield a unique opportunity to understand massive galaxy formation and dust accumulation within 1.5 Billion years after the Big Bang. We have been granted six orbits for continuum imaging of three redshift z>4 starburst galaxies within the COSMOS field using WFC3's IR channel. One orbit per target will be used for each F125W and F160W filters. Hence, we are planning three visits, one per target, within which each of the two orbits is assigned one particular filter. We use the IR dither-blob pattern with default shifts of a few arcseconds combined with the dither-line IR sub-pattern to allow for sub-pixel shifts, which should be sufficient to move detector defects and persistence from bright sources around the chip by enough to allow them to be dealt with when combining the images. This way, we can split the observations into four exposures per orbit -- matching for both filters -- whereby each exposure takes about 600s. Using the SPARS50 read out sequence we can incorporate 14-15 samples to make the best use of our visibility coverage. We checked the DSS images for nearby bright stars and constrain the rolling range in order to avoid detector saturation. We checked that this constraint does not affect our overall target visibility. We use the IR-fix aperture, centered on the location of our targets, allowing for best coverage of our objects of interest and also obtain a representative sampling of their environment. The absolute astrometric frame in the COSMOS field is tied to the VLA radio observations so that we are not worried about incompatibilities with respect to the global ICRS standard. UNRESOLVED STELLAR POPULATIONS AND GALAXY STRUCTURE Default false false false false false SUPPORTED GALAXY HIGH REDSHIFT GALAXY STARBURST ULTRALUMINOUS IR GAL J2000 J2000 H=23.6 GALAXY HIGH REDSHIFT GALAXY STARBURST ULTRALUMINOUS IR GAL J2000 J2000 H=25.2 GALAXY HIGH REDSHIFT GALAXY STARBURST ULTRALUMINOUS IR GAL J2000 J2000 H=24.4 WFC3/IR Imaging No No F125W WFC3/IR Imaging No No F160W WFC3/IR Imaging No No F125W WFC3/IR Imaging No No F160W WFC3/IR Imaging No No F125W WFC3/IR Imaging No No F160W POS-TARG DITHER DITHER 2 5.183 WFC3-IR-DITHER-LINE false false 0.636 2 41.859 POS-TARG WFC3-IR-DITHER-BLOB 41.788 1 true The scheduling data was generated by CASM 21.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 13294 :visit-id "01" :proposal-version -1 :trans-version "20130502" :date "05-Jul-2013 15:01:23.0" :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 2808128 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13294 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13294 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2870 :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 3229 :pcs-gap 0 ) (Tic-Orbit :proposal-id 13294 :visit-id "01" :orbit-number 2 :pcs-time 222 :si-vis-utilization 2870 :al-overhead-at-end 0 :internal-dur-at-end 980 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3229 :pcs-gap 0 ) true 2 0 The scheduling data was generated by CASM 21.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 13294 :visit-id "02" :proposal-version -1 :trans-version "20130502" :date "05-Jul-2013 15:08:26.0" :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 2808128 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13294 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13294 :visit-id "02" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2870 :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 3229 :pcs-gap 0 ) (Tic-Orbit :proposal-id 13294 :visit-id "02" :orbit-number 2 :pcs-time 222 :si-vis-utilization 2870 :al-overhead-at-end 0 :internal-dur-at-end 980 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3229 :pcs-gap 0 ) true 2 0 The scheduling data was generated by CASM 21.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 13294 :visit-id "03" :proposal-version -1 :trans-version "20130502" :date "05-Jul-2013 15:09:06.0" :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 2808128 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13294 :visit-id "03" :obset-id "03" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13294 :visit-id "03" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2870 :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 3229 :pcs-gap 0 ) (Tic-Orbit :proposal-id 13294 :visit-id "03" :orbit-number 2 :pcs-time 222 :si-vis-utilization 2870 :al-overhead-at-end 0 :internal-dur-at-end 980 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3229 :pcs-gap 0 ) true 2 0