8384(  2) - 12/18/98 16:55  - [  1]

    PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS   ST ScI Use Only
                                                       ID:      8384
                                                       Version: 2
                                                       Check-in Date: 18-Dec-1998
                                                                      16:54:10

1.Proposal Title:
The Morphology of Faint WFPC2 Galaxies
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2. Proposal For  3. Cycle
AR               8
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4. Investigators
                                                                                     Contact?
    PI: Kavan Ratnatunga                  Carnegie Mellon University
   CoI: Prof. Richard Griffiths           Carnegie Mellon University                    N

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5. Abstract

Field galaxies imaged with WFPC2 have formed a unique and invaluable database.
Galaxies parameterized by morphology, magnitude, color, half-light radius, axis-
ratio, orientation and location comprise a database used for long term statistical
studies in cosmology. We propose to generate a catalog from all suitable WFPC2
exposures taken with broadband filters and split for cosmic-rays, nearly doubling
the number of the better quality WFPC2 fields which are currently available in the
Medium Deep Survey (MDS) database. We will add homogeneously the primary archival
material from Cycles 4- 7 (including HDF south) and future primary and parallel
exposures from Cycles 7 and 8. The resulting database with quantitative parameter
estimates will be statistically analyzed to model the distribution and evolution of
galaxy morphology and weak gravitational lensing. The semi-automated MDS software
for WFPC2 data is currently the only pipeline which can handle this large data
reduction task. The catalog will be made available via the existing searchable MDS
database on the web. The enlarged catalog, surveying a statistically significant
area well distributed in the sky to average over expected random fluctuations in
narrow fields of view, will also fill the intermediate magnitudes between the
brighter Sloan Survey and the fainter HDF fields.
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  Data Distribution

  Paper Products:  NO
  Media:           ELECTRONIC
  Blocking Factor: 10
  Ship To:         PI_Address
  Ship Via:
  Email:
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                                                8384(  2) - 12/18/98 16:55  - [  2]

            Summary Form for Proposal  8384

  Item                         Used in this proposal
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  Proposal Category            AR
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