Physics
Scientific paper
Jul 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991hst..prop.4163s&link_type=abstract
HST Proposal ID #4163
Physics
Hst Proposal Id #4163
Scientific paper
This proposal requests time to bring the power of HST to bear on the problems of solar nebula formation and evolution. During Cycle 1, we plan to use the Planetary Camera to image the circumstellar environment of 3 nearby pre-main sequence stars in order to search for evidence of disks via light scattered earthward by dust embedded in circumstellar disks and investigate the morphology of energetic winds driven by these stars. Our longer term goals (Cycle 2 and beyond) are to image a much larger sample of pre-main sequence stars in order to: determine the frequency with which disks form around single and multiple stars; characterize the morphology of circumstellar disks for a sample of pre-main sequence stars spanning the time soon after stellar birth, to the epoch when disks become optically thin, perhaps following planet-building episodes; understand the degree of interaction between winds and circumstellar disks, estimate more accurate mass loss rates for PMS stars, and to assess thereby the effect of PMS star winds on the evolution of disks and the planet-forming environment.
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