This Phase II submission is associated with HST time awarded by the Chandra TAC. ----- Attempting Submission 1 (Wed Sep 14 23:25:15 GMT 2011) ----- We propose Chandra and HST observations of a unique X-ray cluster in which the Brightest Cluster Galaxy (BCG) is in the late stages of formation. The Chandra observations will be used to study how the properties of the intracluster medium are impacted by BCG formation and the HST data will be used to map out the intracluster stellar light. We will test whether the formation of the BCG has destroyed the cool core and determine the role of intracluster stars in enriching the intracluster medium. The proposed observations will be combined with our existing Chandra and HST data for clusters where the BCG is in the early stages of formation, allowing us to develop a more complete evolutionary picture of how BCG formation has affected the intracluster medium.

The center of a cluster of galaxies at moderate redshift will be observed with WFC3/IR to map out the stellar light near the center of the cluster. We will observe the cluster in the F160W and F105W filters. The approximate exposure time is 4000 seconds for F160W and 8000 seconds for F105W. To achieve these exposure times we will observe the target using the WFC3-IR-DITHER-BOX-MIN dither pattern. UNRESOLVED STELLAR POPULATIONS AND GALAXY STRUCTURE 12 false 0.0 0.0 false false false false SUPPORTED CLUSTER OF GALAXIES GROUP HIGH REDSHIFT CLUSTER J2000 J2000 WFC3/IR Imaging No No F105W WFC3/IR Imaging No No F160W POS-TARG DITHER 0.572 LINE 0.365 false true 74.653 4 18.528 WFC3-IR-DITHER-BOX-MIN 1 false 1316041938704 /Users/mulchaey/Desktop/OP-cache/modz_groups-v01.xml The scheduling data was generated by CASM 19.3. CASM was run in Phase II mode. (Tic-Visit :proposal-id 12763 :visit-id "01" :proposal-version -1 :trans-version "20110811" :date "14-Sep-2011 16:12:18.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 4 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 6685040 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 12763 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 12763 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 3223 :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 3645 :pcs-gap 0 ) (Tic-Orbit :proposal-id 12763 :visit-id "01" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3182 :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 3645 :pcs-gap 0 ) (Tic-Orbit :proposal-id 12763 :visit-id "01" :orbit-number 3 :pcs-time 222 :si-vis-utilization 3182 :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 3645 :pcs-gap 0 ) (Tic-Orbit :proposal-id 12763 :visit-id "01" :orbit-number 4 :pcs-time 222 :si-vis-utilization 3182 :al-overhead-at-end 0 :internal-dur-at-end 540 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3645 :pcs-gap 0 ) true 4 0