7972(  1) - 04/16/98 14:02  - [  1]

    PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS   ST ScI Use Only
                                                       ID:      7972
                                                       Version: 1
                                                       Check-in Date: 16-Apr-1998
                                                                      14:01:03

1.Proposal Title:
Studying the Evolution of Galaxies Using the NICMOS Parallel Imaging Data
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2. Proposal For  3. Cycle
AR               7
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4. Investigators
                                                                                     Contact?
    PI: Lin Yan                           Carnegie Observatories
   CoI: Lisa Storrie-Lombardi             Carnegie Observatories                        N
   CoI: Patrick McCarthy                  Carnegie Observatories                        N
   CoI: Ray Weymann                       Carnegie Observatories                        N

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5. Abstract

The NICMOS pure parallel imaging survey for the first time provides a wealth of data
at near-IR wavelengths with HST resolution. We propose to use all of the archival
NICMOS camera 3 images of high galactic latitude fields to carry out a detailed
study of galaxy evolution. This survey will cover ~ 150 square arcminutes to a depth
of H~23.5, including individual fields that go as deep as H=24.5. The parallel data
taken in November, 1997, show images with a measured FWHM for stellar objects of
~0.23''. In one orbit of integration (~3000 seconds) these data reach an H magnitude
of 23.5 at 10Sigma for a 0.3'' diameter aperture. We have developed expertise in
reducing these data and have completed our first paper detailing the number counts
and half-light radii of faint galaxies to H=24.5. We will (1) reduce the entire
NICMOS parallel imaging data set (F160W and F110W filters); (2) provide deep counts,
colors, and where possible, morphological classifications for this galaxy survey;
(3) use the two-point correlation function to assess correlations on angular scales
from several arcseconds to a few tenths of an arcsecond (~ 1 kpc for z>1); (4)
obtain V, R, and I images of the deepest fields at WIYN and Las Campanas to estimate
photometric redshifts; (5) and obtain spectroscopic redshifts of selected objects
with LRIS on Keck. This survey complements the data from the NICMOS GTO HDF
observations (0.7\Box '), as well as the GO parallel grism survey (PI: P. McCarthy)
and the GO HDF survey (5\Box ') (PI: M. Dickinson).
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  Data Distribution

  Media:           ELECTRONIC
  Blocking Factor: 10
  Ship To:         PI_Address
  Ship Via:
  Email:
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                                                7972(  1) - 04/16/98 14:02  - [  2]

            Summary Form for Proposal  7972

  Item                         Used in this proposal
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  Proposal Category            AR
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