Supernova Remnants in a Cloudy Interstellar Medium

Details Supernova Remnants in a Cloudy Interstellar Medium Supernova Remnants in a Cloudy Interstellar Medium

Jul 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999hst..prop.8110c&link_type=abstract

HST Proposal ID #8110

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Hst Proposal Id #8110 Stellar Ejecta

Scientific paper

Small cloudlets in the interstellar medium {ISM} may have a marked effect on the physical structure and evolution of supernova remnants {SNRs}. The effects of evaporating cloudlets in a SNR interior have been modeled and are an important factor leading t o McKee & Ostriker's three-phase model of the ISM. The cloudlets themselves are only now becoming observable through high-resolution instruments such as the Hubble Space Telescope's Wide Field and Planetary Camera {WFPC2}. We propose WFPC2 observations o f the three SNRs, N49, N206, and N63A, which appear to be the best candidates for the examination of the physical structure of SNRs in a cloudy ISM. These WFPC2 images can be combined with complementary observations in other wavelength regimes to identify cloudlets inside remnants; trace SNR shock fronts; determine the physical parameters of interior cloudlets and compare them to those of the hot interior; and investigate the evaporation of shocked cloudlets into the hot cav it ies of the SNRs.

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