7528(  1) - 12/14/96 00:33  - [  0]

    PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS   ST ScI Use Only
                                                       ID:      7528
                                                       Version: 1
                                                       Check-in Date: 13-Dec-1996
                                                                      18:16:05

1.Proposal Title:
The Luminosity Function and Evolution of Rich Clusters to z ~ 1.0
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2. Scientific Category   3. Proposal For  4. Cycle
CLUSTERS OF GALAXIES        AR               7
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5. Investigators
                                                                                     Contact?
    PI: Andrew S. Fruchter                Space Telescope Science Institute
   CoI: Ben Moore                         University of Durham, Department of           N
                                          Physics

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6. Abstract

vspace-0.1in HST has now imaged over 40 clusters covering redshifts out to a z of 1.
Over half of these have multicolor data. This extensive collection of cluster images
provides an extraordinary opportunity to examine the evolution of cluster galaxies,
and in particular to investigate the potentially dramatic effect of "galaxy
harassment" citemkl+96 on cluster members with M >~ M_* + 2. This evolution,
inflicted upon lighter cluster members by multiple near encounters with other
cluster members, should produce strong changes in the morphology, luminosity and the
morphological-density relation of dwarfs with time and with position in the cluster.
Here we show that this evolution can be studied effectively by comparison of HST
archival cluster images with HST background fields and with our ground-based images
of nearby clusters.
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  Data Distribution

  Media:           ELECTRONIC
  Blocking Factor: 10
  Ship To:         PI_Address
  Ship Via:
  Email:                                                              ,
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                                                7528(  1) - 12/14/96 00:33  - [  1]

            Summary Form for Proposal  7528

  Item                         Used in this proposal
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  Proposal Category            AR
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  Scientific Category          CLUSTERS OF GALAXIES
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