10307(  1) - 04/02/04 11:33  - [  1]

    PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS   ST ScI Use Only
                                                       ID:      10307
                                                       Version: 1
                                                       Check-in Date: 02-Apr-2004
                                                                      11:33:31

1.Proposal Title:
Photo- and Spectro-Chemical Evolution Models for Starburst Galaxies
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2. Proposal For  3. Cycle  4. Parallel Pointing Tolerance
AR               13        <none>
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5. Investigators
                                                                                     Contact?
    PI: Dr. Gerardo Arturo Vazquez        Space Telescope Science Institute
   CoI: Dr. Claus Leitherer               Space Telescope Science Institute             N
   CoI: Dr. Daniel Schaerer               Observatoire de Geneve                        N

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6. Abstract

We propose to develop new chemically consistent evolutionary synthesis models for
young stellar populations containing massive stars, including Wolf-Rayet stars. Such
populations are the powering sources of starburst galaxies at low and high redshift
and are major chemical pollutants of the interstellar and intergalactic medium. The
new models are based on the successful Starburst99 code, which will be expanded to
allow for stellar evolution at arbitrary (not discrete) chemical composition,
including metallicity zero. We will supplement our current grid of stellar models by
newly developed evolutionary tracks with rotation. The chemical evolution models
will not make the instantaneous recycling approximation and will account for infall
and outflows. Existing chemical evolution models do either have to rely on these
assumptions or, if they do not, their adopted stellar models make them inapplicable
to young massive populations.
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                                                10307(  1) - 04/02/04 11:33  - [  2]

            Summary Form for Proposal  10307

  Item                         Used in this proposal
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  Proposal Category            AR
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