Science Keywords: Select from 2 to 5 items. 0 Assigned ID: 3807 ----- Attempting Submission 1 (Tue Aug 30 15:06:05 GMT 2022) ----- Joint Chandra/HST This is a revised submission after consultation with my STScI PC. The main change from before is the use of the WFC aperture. -1984417566 ----- Attempting Submission 1 (Thu Sep 29 22:19:29 GMT 2022) ----- HST Phase II Proposal 17244 successfully submitted. Receipt: # 17244-1 ----- Attempting Submission 2 (Tue Nov 01 03:23:19 GMT 2022) ----- We propose the first detailed X-ray spectral imaging observation of the intracluster medium in a newly identified high redshift (z=0.836), massive, SZ-selected cluster. The proposed target is the seventh highest signal-to-noise cluster in the recently published ACT sample of 4195 clusters, exceeded in its redshift range only by El Gordo. ACT-CL J1407.0+10.48 is the fifth highest mass cluster at its redshift or higher in this sample. The goal of the proposal is a comprehensive study of the hot gas and dark matter in this potentially exceptional system. We plan to obtain HST/ACS/WFC images of the central region of ACT-CLJ1407+10.48 in three filters: F606W, F774W, and F814W. A single pointing of the cluster will be done in each filter using the same four-point dither pattern designed to cover the gap between the chips and allow for efficient cosmic ray rejection. We will use the WFC aperture to ensure that the central brightest cluster galaxy does not fall within the CCD gap regardless of the actual orient of the observation. Each filter will be observed in a single orbit and a single visit is used to carry out the full observation (3 orbits). na Large Scale Structure of the Universe Galaxies 6 false false false false false false false SUPPORTED CLUSTER OF GALAXIES GRAVITATIONAL LENS HIGH REDSHIFT CLUSTER RICH CLUSTER YES J2000 J2000 ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F775W ACS/WFC Imaging No No F814W POS-TARG DITHER DITHER 2 3.034 LINE false false 0.149 2 85.29 POS-TARG ACS-WFC-DITHER-LINE 34.25 3 true 1667272279826 /Users/jph/Proposals/Chandra/Cycle24/ACT-CL_J1407/HST/OP-cache/J1407_phase2_fourdithers_Newcenter-v01.xml The scheduling data was generated by CASM 30.3. CASM was run in Phase II mode. (Tic-Visit :proposal-id 17244 :visit-id "01" :proposal-version -1 :trans-version "20220630" :date "31-Oct-2022 23:11:19.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 3 :saa-model "27" :si-bright-earth-limb-angle 20.0 :data-volume 3410688 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 17244 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 17244 :visit-id "01" :orbit-number 1 :pcs-time 383 :si-vis-utilization 2766 :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 3149 :pcs-gap 0 ) (Tic-Orbit :proposal-id 17244 :visit-id "01" :orbit-number 2 :pcs-time 392 :si-vis-utilization 2756 :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 3149 :pcs-gap 0 ) (Tic-Orbit :proposal-id 17244 :visit-id "01" :orbit-number 3 :pcs-time 392 :si-vis-utilization 2754 :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 3149 :pcs-gap 0 ) true 3 0