8385(  2) - 12/18/98 16:55  - [  1]

    PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS   ST ScI Use Only
                                                       ID:      8385
                                                       Version: 2
                                                       Check-in Date: 18-Dec-1998
                                                                      16:54:33

1.Proposal Title:
The Five Deep Fields:  Lyman Break Galaxies from Multi--Color WFPC2 Images
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2. Proposal For  3. Cycle
AR               8
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4. Investigators
                                                                                     Contact?
    PI: Mark Dickinson                    Space Telescope Science Institute
   CoI: Dr. Charles Steidel               California Institute of Technology            N
   CoI: Mr. Kurt Adelberger               California Institute of Technology            N
   CoI: Dr. Andrew Fruchter               Space Telescope Science Institute             N
   CoI: Dr. Mauro Giavalisco              Space Telescope Science Institute             N
   CoI: Dr. Piero Madau                   Space Telescope Science Institute             N
   CoI: Dr. Henry Ferguson                Space Telescope Science Institute             N

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5. Abstract

The Hubble Deep Field provided a high--quality, public data set for identifying
galaxies at 2 < z < 4.5 using the ``Lyman break'' technique. These data have been
used to derive the global evolution of cosmic star formation and to study the
morphological and photometric properties of star forming, high redshift galaxies.
HST--selected Lyman break galaxies probe lower luminosities than do ground--based
samples, defining the faint end of the high redshift luminosity function and
enabling studies of clustering segregation, an important test of biased galaxy
formation theory. However, with only a single survey field (the HDF), small number
and small volume statistics fundamentally limit many conclusions which can be drawn
about this population. Here we propose to carry out a uniform analysis of Lyman
break galaxies from five separate fields: the HDF--South and North, plus three
additional public data sets with deep WFPC2 imaging through three or more HDF
filters. We will reduce the new fields, distribute the images to the community,
define a uniform catalog of HST-- selected Lyman break objects, and use them to
study (1) the luminosity function, (2) global UV luminosity density, (3) clustering
segregation, and (4) morphological ``families'' of Lyman break galaxies. Such data
will greatly enhance the statistical robustness of previous conclusions, and test
whether or not the original HDF represents a fair sample of the Universe.
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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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                                                8385(  2) - 12/18/98 16:55  - [  2]

            Summary Form for Proposal  8385

  Item                         Used in this proposal
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  Proposal Category            AR
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