Computer Science
Scientific paper
Jul 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003hst..prop.9903s&link_type=abstract
HST Proposal ID #9903
Computer Science
Hst Proposal Id #9903 Galaxies
Scientific paper
We propose a Target of Opportunity program to study the halo and ISM of a low-redshift galaxy hosting a bright new supernova {V<15}. The objectives are to characterize the ionization state, gas-phase abundances, metallicity, and gas kinematics of the ISM and halo of the host galaxy, and if the properties of the sightline are favorable, the intervening IGM. The principal spectral region for this study is the far UV {<1700A} using STIS echelle spectra, which provide a comprehensive set of lines to study hot, warm, and cool phases of the ISM. The HST spectra will be augmented by FUSE TOO observations of the same object for which we already have allocated time. New core-collapse SNe, with their strong, nearly featureless UV continua, provide outstanding opportunities to obtain high-quality absorption line spectra of the gas on the line of sight to the SN, but only if the observations are executed within about one week of outburst. Our team has the experience and extensive ground-based support to promptly assess the suitability of each newly discovered SN for this program and to quickly provide all the necessary data to rapidly execute the observations.
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