7545(  1) - 12/14/96 00:57  - [  0]

    PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS   ST ScI Use Only
                                                       ID:      7545
                                                       Version: 1
                                                       Check-in Date: 13-Dec-1996
                                                                      18:21:36

1.Proposal Title:
Compact Stellar Groups in the 30 Doradus Nebula and their Nebular Environment
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2. Scientific Category   3. Proposal For  4. Cycle
HOT STARS AND STELLAR       AR               7
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5. Investigators
                                                                                     Contact?
    PI: Nolan R. Walborn                  Space Telescope Science Institute

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6. Abstract

We propose to further knowledge of the stellar content of 30 Doradus by examining
the images of all OB stars in a current, major ground-based spectral-classification
study, using the archival WFPC2 (and possibly PC1) data. It is expected, and indeed
already known in a few cases, that many of them will be compact multiple systems
resolved by WFPC. It is essential to account for such structure in luminosity, mass,
and evolutionary inferences. We shall derive the most accurate possible photometric
results for the resulting components, and we shall propose spatially resolved HST
spectroscopy of them in Cycle 8. It should be emphasized that we are not addressing
R136, the subject of other programs, but the rich, massive population throughout the
Nebula beyond the central core, especially to the north and west where there is
evidence for a younger generation, whose formation was possibly triggered by the
energetic activity of the core. In addition, preliminary inspection of some of the
WFPC2 data has shown many intricate structures in the ambient dust and ionized gas,
including possible pre-stellar objects, which we shall describe and relate to the
associated stellar component and known IR sources as appropriate.
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  Data Distribution

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  Blocking Factor: 10
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                                                7545(  1) - 12/14/96 00:57  - [  1]

            Summary Form for Proposal  7545

  Item                         Used in this proposal
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  Proposal Category            AR
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  Scientific Category          HOT STARS AND STELLAR
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