8373(  2) - 12/18/98 16:51  - [  1]

    PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS   ST ScI Use Only
                                                       ID:      8373
                                                       Version: 2
                                                       Check-in Date: 18-Dec-1998
                                                                      16:50:01

1.Proposal Title:
The Evolution of the Mass--to--Light Ratio of Spiral Galaxies
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2. Proposal For  3. Cycle
AR               8
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4. Investigators
                                                                                     Contact?
    PI: Riccardo Giovanelli               Cornell University
   CoI: Dr. Martha P. Haynes              Cornell University                            N
   CoI: Dr. Matthew Bershady              University of Wisconsin-Madison               N
   CoI: Mr. Jeremy Darling                Cornell University                            N

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5. Abstract

We propose to study the M/L ratio of spiral galaxies up to a redshift of 1/3, using
the Tully--Fisher relation. That goal will be achieved by access to HST archival
data, which will provide a target list of galaxies to be observed with the upgraded
Arecibo telescope at 21 cm. HST images are of paramount importance in the project,
as for redshifts higher than 0.1 it is impossible to obtain sufficiently accurate
estimates of galaxy morphology and disk inclination with ground--based images. We
have cross--referenced the HST data base with catalogs of galaxy redshifts and
conclude that a sample of nearly 100 target galaxies suitable for this study can be
obtained using the HST archives.
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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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                                                8373(  2) - 12/18/98 16:51  - [  2]

            Summary Form for Proposal  8373

  Item                         Used in this proposal
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  Proposal Category            AR
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