----- Attempting Submission 1 (Wed Oct 29 23:55:19 GMT 2008) ----- ----- Attempting Submission 2 (Mon Jan 19 19:35:08 GMT 2009) ----- The Formation of Brightest Cluster Galaxies We propose Chandra and HST observations of a unique low redshift cluster in which the Brightest Cluster Galaxy (BCG) is in the process of forming. The Chandra observations will be used to study the impact of BCG formation on the properties of the intracluster medium. We will test whether galaxy merging can destroy cool cores and disrupt hot gas halos. We will also explore the role of intracluster stars in enriching the intracluster medium. The HST observations will be used to search for extended tidal features and young star clusters and to estimate the final stellar mass of the BCG. The low redshift of our target allows a more detailed study of BCG formation than is possible with higher redshift systems.
We will use HST imaging of the core of MZ 10451 to search for extended tidal features and young star clusters that may have formed in the encounter. Our program will use the WFC3 UVIS channel. We will image the cluster center in two bands: F475W and F814W. The extended stellar plume is oriented along the north-south direction and we have specified a range of orientation angles to allow maximum spatial coverage of this feature. As we are also particularly interested in the region between the two nuclei, we will use a 4-point mosaic pattern that will allow us to avoid the chip gap in this vital region. No special calibration required. 12 false 0.0 0.0 false false false false false SUPPORTED CLUSTER OF GALAXIES TIDAL TAIL POOR CLUSTER MULTIPLE NUCLEI INTERACTING GALAXY GALAXY PAIR J2000 00 00 0.0000 +00 00 0.00 J2000 POS-TARG DITHER 5.4 LINE 77.5 false true 95.3 4 5.55 WFC3-UVIS-MOS-BOX-LRG 1 false The scheduling data was generated by CASM 17.2. CASM was run in Phase II mode. /tmp/OPVisit52802.xml (Tic-Visit :proposal-id 11841 :visit-id "01" :proposal-version -1 :trans-version "20080807" :date "19-Jan-2009 11:33:08.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 1154992 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 11841 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 11841 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2932 :al-overhead-at-end 116 :internal-dur-at-end 670 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3267 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 17.2. CASM was run in Phase II mode. /tmp/OPVisit52803.xml (Tic-Visit :proposal-id 11841 :visit-id "02" :proposal-version -1 :trans-version "20080807" :date "19-Jan-2009 11:33:11.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 1154992 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 11841 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 11841 :visit-id "02" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2932 :al-overhead-at-end 116 :internal-dur-at-end 670 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3267 :pcs-gap 0 ) true 1 0