XMMU J2235.3-2557 (z=1.4)

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Dear HST Cluster SN team,

Here are a few additional notes concerning XMMU J2235.3-2557 (z=1.4),
the most distant X-ray massive galaxy cluster yet discovered. This
cluster was listed as "XMM33" in the SN proposal.

- The cluster is spectroscopically confirmed with 12 concordant
   redshifts. It is a massive structure (high Lx, high kT,
   optically/NIR rich). Very likely more massive than RDCS1252,
   previously the most massive structure at z>1.

- VLT R/z/J/K imaging demonstrate the cluster is dominated by old
   ellipticals which delineate a tight red sequence.

- From a separate Cycle 14 proposal for XMMUJ2235, we were awarded:
        14 orbits NICMOS
         5 orbits ACS
   These ACS orbits were transferred to the SN program according to our
   prior agreement.

- Large follow-up proposals have been submitted to Spitzer, Chandra,
   XMM, and the VLT.

- More information is available at
        http://www.astro.lsa.umich.edu/~cmullis/research/xmmuj2235

Best wishes,
Chris

------------------------------------------------------------------------

----
    Christopher R. Mullis          e-mail: cmullis@umich.edu
    Department of Astronomy        www:     
www.astro.lsa.umich.edu/~cmullis
    University of Michigan         phone:  (734) 615-7374
    918 Dennison Building          fax:    (734) 763-6317
    Ann Arbor, MI 48109-1042       office: 918 Dennison
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