10312(  1) - 04/02/04 11:41  - [  1]

    PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS   ST ScI Use Only
                                                       ID:      10312
                                                       Version: 1
                                                       Check-in Date: 02-Apr-2004
                                                                      11:40:59

1.Proposal Title:
Investigation of M Dwarf Atmospheres Using Archival STIS Data
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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. Suzanne L. Hawley             University of Washington
   CoI: Dr. Jeff A. Valenti               Space Telescope Science Institute             N
   CoI: Mr. Joel C. Allred                University of Washington                      N

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6. Abstract

We propose an archival study of the STIS/MAMA data from program GO-8129. The data
comprise the only high-resolution, near-ultraviolet spectra in the HST archive, and
indeed in existence, for an M dwarf. We will analyze the six orbits of data to find
periods of quiescence (between obvious flares), and will produce a high signal-to-
noise ratio summed quiescent spectrum for analysis. Using the CHIANTI database
together with detailed radiative hydrodynamic models, we will investigate the outer
atmospheric structure of active M dwarfs. Employing hundreds of lines in the
archival spectrum as constraints, we will construct the first self-consistent model
of an M dwarf atmosphere.
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                                                10312(  1) - 04/02/04 11:41  - [  2]

            Summary Form for Proposal  10312

  Item                         Used in this proposal
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  Proposal Category            AR
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