HST/WFC3-IR Imaging of Exceptionally Luminous Himiko/CR7-Like Galaxies at z>6

0 Assigned ID: 2428 ----- Attempting Submission 1 (Fri Apr 09 23:12:16 GMT 2021) ----- HST Phase I Proposal 2428 successfully submitted. Receipt: # 2428-1 ----- Attempting Submission 2 (Fri Apr 09 23:15:52 GMT 2021) ----- HST Phase I Proposal 2428 successfully submitted. Receipt: # 2428-2 ----- Attempting Submission 3 (Fri Apr 09 23:55:11 GMT 2021) ----- HST Phase I Proposal 2428 successfully submitted. Receipt: # 2428-3 ----- Attempting Submission 4 (Sat Apr 10 00:01:43 GMT 2021) ----- HST Phase I Proposal 2428 successfully submitted. Receipt: # 2428-4 ----- Attempting Submission 5 (Sat Apr 10 00:09:19 GMT 2021) ----- ORBITAL VISIBILITY OVERRUN --- Nov 1 --- All low-sky constraints have been removed. --- Oct 28 --- APT was reviesed as follows so that all four dither positions will land on areas without any bad pixels nearby: - POS TARG X = 0" -> 5.46” - POS TARG Y = 0" -> -1.95” - Point Spacing: 0.572" -> 2.86” (5x) - Line Spacing: 0.365" -> 1.825” (5x) -292515433 ----- Attempting Submission 1 (Wed Jul 28 15:55:58 GMT 2021) ----- ----- Attempting Submission 2 (Thu Oct 28 19:47:35 GMT 2021) ----- HST Phase II Proposal 16641 successfully submitted. Receipt: # 16641-2 ----- Attempting Submission 3 (Mon Nov 01 20:14:27 GMT 2021) ----- There is one orbit in which the vist overrun is 1 sec, which triggers the error. I'm hoping that a 1 sec overrun is not a problem, but if it is, please let me know. HST/WFC3-IR Imaging of Exceptionally Luminous Himiko/CR7-Like Galaxies at z>6 Physical processes governing the formation/evolution of high-redshift galaxies in the epoch of reionization (EoR; z>6) are still not well understood. In most cases, EoR galaxies are fuzzy faint blobs showing little internal structure, and fitting various theoretical models to spatially-integrated spectral energy distributions (SEDs) is often all that can be done. There are, however, a small number of luminous EoR galaxies, such as Himiko at z=6.595 and CR7 at z=6.601, whose exceptional brightnesses have allowed spatially-resolved studies and have revealed some fascinating details. Although such luminous EoR galaxies are rare, the Subary/Hyper Suprime-Cam (HSC) survey has recently discovered 7 comparably bright EoR galaxies with y < 25 mag (in comparison, y=25.4 and 24.5 mag with Himiko and CR7, respectively). Here, we propose to obtain HST/WFC3 near-infrared images for these exceptionally luminous z>6 galaxies with the F105W, F125W, and F160W filters. Our goals are, (1) to identify the rest-frame UV continuum morphology, (2) to measure UV continuum spectral slopes, and (3) to compare the UV continuum morphology with those of Ly-alpha, [C II], and dust emission when possible. The obtained HST data will allow us to probe the internal structures and underlying physical processes in these remarkable high-redshift galaxies. The targeted z>6 EoR galaxies are so bright that they will also make excellent targets for NIRSpec IFU observations, enabling us to study the internal structure and kinematics of these high-redshift galaxies in greater detail. The obtained HST data will also be essential to make effective us of precious JWST time. We will observe 7 bright (y<25 mag) Lyman alpha emitters (LAEs) and Lyman break galaxies (LBGs) at z=6-6.5 selected from the Subaru Hyper Suprime-Cam (HSC) surveys. We will observe each galaxy with WFC3-IR using three filters, F105W, F125W, and F160W, probing their UV continuum morphologies and spectral slopes. Since the target galaxies are compact (~1"), we will use the IR aperture to ensure that the obtained data are optimized for these individual sources. We will use SAMP-SEQ=SPARS50 and set NSAMP=7 for the F105W/F125W observations (a half-orbit each) and NSAMP=14 for the F160W observations (one orbit). This ensures that there are enough number or reads to measure the count slope accurately even with the half-orbit observations. In the following cases, the orbit duration is slightly longer so that NSAMP can be increased: HSCJ162833, HSCJ163026: NSAMP=15 for F160W HSCJ162126 : NSAMP=15 for F160W, NSAMP=8 for F125W Since the UV continuum brightness of these galaxies drops toward longer wavelengths, NSAMP is increased for F160W first and then for F125W when possible. We generally set the low-sky constraint when it does not affect the number of exposures schedulable, but for these three sources, we removed it to increase NSAMP. For each source, we use the WFC3-IR-DITHER-BOX-MIN pattern to obtain four exposures, one at each dither position. To maximize the observing efficiency (i.e., to miminize the number of pointing manuevers during each orbit), we change the filter at each dither position rather than dithering the telecope while keeping the same filter. E. Egami, M. Ouchi, Y. Ono, L. Jiang, Y. Harikane and F. Sun are all previous HST users with experience with the instrument WFC3/IR. E. Egami, M. Ouchi, Y. Ono and L. Jiang are previous HST investigators with >20 accepted HST GO/SNAP programs. E. Egami, M. Ouchi, Y. Ono, L. Jiang, Y. Harikane and F. Sun are all experts in the study of high-redshift galaxies, especially Lyman-alpha emitters (LAEs) and Lyman-break galaxies (LBGs) at z>~6. Our expertise includes (i) designing ground-based surveys for the discoveries these galaxies (e.g., M. Ouchi and Y. Ono as the principle investigators of SILVERRUSH/GOLDRUSH surveys that led to the discoveries of our targets), (ii) spectroscopic follow-up at multiple wavelengths, (iii) HST data reduction and photometry, (iv) stellar population modeling which is crucial for the interpretation of HST observation, and (v) combining HST data with longer-wavelength observations (e.g., ALMA) for panchromatic analysis. This program is a JWST initiative program. E. Egami works with JWST/NIRCam GTO team. E. Egami and F. Sun have experience in simulating the JWST observations. They will help the preparation of future JWST observations and maximize the scientific impact of this HST program. Galaxies 0 false false false false true false false false SUPPORTED GALAXY HIGH REDSHIFT GALAXY J2000 J2000 y=24.51 GALAXY HIGH REDSHIFT GALAXY J2000 J2000 y=23.88 GALAXY HIGH REDSHIFT GALAXY J2000 J2000 y=23.98 GALAXY HIGH REDSHIFT GALAXY J2000 J2000 y=22.92 GALAXY HIGH REDSHIFT GALAXY J2000 J2000 y=24.96 GALAXY HIGH REDSHIFT GALAXY J2000 J2000 y=24.97 GALAXY HIGH REDSHIFT GALAXY J2000 J2000 y=24.87 WFC3/IR Imaging No No F105W WFC3/IR Imaging No No F125W WFC3/IR Imaging No No F160W WFC3/IR Imaging No No F105W WFC3/IR Imaging No No F125W WFC3/IR Imaging No No F160W WFC3/IR Imaging No No F105W WFC3/IR Imaging No No F125W WFC3/IR Imaging No No F160W WFC3/IR Imaging No No F105W WFC3/IR Imaging No No F125W WFC3/IR Imaging No No F160W WFC3/IR Imaging No No F105W WFC3/IR Imaging No No F125W WFC3/IR Imaging No No F160W WFC3/IR Imaging No No F105W WFC3/IR Imaging No No F125W WFC3/IR Imaging No No F160W WFC3/IR Imaging No No F105W WFC3/IR Imaging No No F125W WFC3/IR Imaging No No F160W POS-TARG DITHER 2.86 LINE 1.825 false false 74.653 4 18.528 WFC3-IR-DITHER-BOX-MIN 1

false

1635797420735 The scheduling data was generated by CASM 29.2. CASM was run in Phase II mode. /private/var/folders/p5/ldd1zgjx14191nmmpfnxjqjh0000gn/T/OPVisit17172975729962986660.xml (Tic-Visit :proposal-id 16641 :visit-id "01" :proposal-version -1 :trans-version "20210514" :date "01-Nov-2021 13:10:20.0" :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 2158704 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 16641 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 16641 :visit-id "01" :orbit-number 1 :pcs-time 383 :si-vis-utilization 2742 :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 3145 :pcs-gap 0 ) (Tic-Orbit :proposal-id 16641 :visit-id "01" :orbit-number 2 :pcs-time 392 :si-vis-utilization 2742 :al-overhead-at-end 0 :internal-dur-at-end 633 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3145 :pcs-gap 0 ) true 2 0 1635449333594 The scheduling data was generated by CASM 29.2. CASM was run in Phase II mode. /Users/egami/Projects/HST-Highz/APT/OP-cache/HST16641-PhaseII-v02.xml (Tic-Visit :proposal-id 16641 :visit-id "02" :proposal-version -1 :trans-version "20210514" :date "28-Oct-2021 12:28:53.0" :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 2228336 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 16641 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 16641 :visit-id "02" :orbit-number 1 :pcs-time 383 :si-vis-utilization 2842 :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 3238 :pcs-gap 0 ) (Tic-Orbit :proposal-id 16641 :visit-id "02" :orbit-number 2 :pcs-time 392 :si-vis-utilization 2842 :al-overhead-at-end 0 :internal-dur-at-end 652 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3238 :pcs-gap 0 ) true 2 0 1635449335890 The scheduling data was generated by CASM 29.2. CASM was run in Phase II mode. /Users/egami/Projects/HST-Highz/APT/OP-cache/HST16641-PhaseII-v03.xml (Tic-Visit :proposal-id 16641 :visit-id "03" :proposal-version -1 :trans-version "20210514" :date "28-Oct-2021 12:28:55.0" :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 2228336 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 16641 :visit-id "03" :obset-id "03" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 16641 :visit-id "03" :orbit-number 1 :pcs-time 383 :si-vis-utilization 2842 :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 3238 :pcs-gap 0 ) (Tic-Orbit :proposal-id 16641 :visit-id "03" :orbit-number 2 :pcs-time 392 :si-vis-utilization 2842 :al-overhead-at-end 0 :internal-dur-at-end 652 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3238 :pcs-gap 0 ) true 2 0 1635449336929 The scheduling data was generated by CASM 29.2. CASM was run in Phase II mode. /Users/egami/Projects/HST-Highz/APT/OP-cache/HST16641-PhaseII-v04.xml (Tic-Visit :proposal-id 16641 :visit-id "04" :proposal-version -1 :trans-version "20210514" :date "28-Oct-2021 12:28:56.0" :trans-errors '(:WARNINGS 1 :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 2297968 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 16641 :visit-id "04" :obset-id "04" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 16641 :visit-id "04" :orbit-number 1 :pcs-time 383 :si-vis-utilization 2942 :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 3333 :pcs-gap 0 ) (Tic-Orbit :proposal-id 16641 :visit-id "04" :orbit-number 2 :pcs-time 392 :si-vis-utilization 2942 :al-overhead-at-end 0 :internal-dur-at-end 671 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3333 :pcs-gap 0 ) true 2 1 1635450089122 The scheduling data was generated by CASM 29.2. CASM was run in Phase II mode. /Users/egami/Projects/HST-Highz/APT/OP-cache/HST16641-PhaseII-v05.xml (Tic-Visit :proposal-id 16641 :visit-id "05" :proposal-version -1 :trans-version "20210514" :date "28-Oct-2021 12:41:28.0" :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 2158704 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 16641 :visit-id "05" :obset-id "05" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 16641 :visit-id "05" :orbit-number 1 :pcs-time 383 :si-vis-utilization 2742 :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 3142 :pcs-gap 0 ) (Tic-Orbit :proposal-id 16641 :visit-id "05" :orbit-number 2 :pcs-time 392 :si-vis-utilization 2742 :al-overhead-at-end 0 :internal-dur-at-end 633 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3142 :pcs-gap 0 ) true 2 0 1635450141126 The scheduling data was generated by CASM 29.2. CASM was run in Phase II mode. /Users/egami/Projects/HST-Highz/APT/OP-cache/HST16641-PhaseII-v06.xml (Tic-Visit :proposal-id 16641 :visit-id "06" :proposal-version -1 :trans-version "20210514" :date "28-Oct-2021 12:42:20.0" :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 2158704 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 16641 :visit-id "06" :obset-id "06" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 16641 :visit-id "06" :orbit-number 1 :pcs-time 383 :si-vis-utilization 2742 :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 3142 :pcs-gap 0 ) (Tic-Orbit :proposal-id 16641 :visit-id "06" :orbit-number 2 :pcs-time 392 :si-vis-utilization 2742 :al-overhead-at-end 0 :internal-dur-at-end 633 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3142 :pcs-gap 0 ) true 2 0 1635797527272 The scheduling data was generated by CASM 29.2. CASM was run in Phase II mode. /private/var/folders/p5/ldd1zgjx14191nmmpfnxjqjh0000gn/T/OPVisit734688890593529996.xml (Tic-Visit :proposal-id 16641 :visit-id "07" :proposal-version -1 :trans-version "20210514" :date "01-Nov-2021 13:12:06.0" :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 2158704 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 16641 :visit-id "07" :obset-id "07" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 16641 :visit-id "07" :orbit-number 1 :pcs-time 383 :si-vis-utilization 2742 :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 3145 :pcs-gap 0 ) (Tic-Orbit :proposal-id 16641 :visit-id "07" :orbit-number 2 :pcs-time 392 :si-vis-utilization 2742 :al-overhead-at-end 0 :internal-dur-at-end 633 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3145 :pcs-gap 0 ) true 2 0