Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000hst..prop.8602f&link_type=abstract
HST Proposal ID #8602
Astronomy and Astrophysics
Astronomy
Hst Proposal Id #8602 Hot Stars
Scientific paper
During the past few years, the Lick Observatory Supernova Search {LOSS} and the Beijing Astronomical Observatory Supernova Search {BAOSS} have found a total of 76 supernovae {SNe}, 62 of them in relatively nearby galaxies {cz <= 6000 km s^-1}. Most of the nearby objects were discovered before maximum brightness. All have follow-up photometry and spectroscopy; they include some of the best-studied SNe to date. We propose to conduct a WFPC2 snapshot survey in V and I of the sites of the nearby SNe, which have precisely known positions, to obtain high-resolution information on their local environment. For example, we will see whether SNe of a given kind tend to occur close to star clusters, or in dusty regions, or in old {red} stellar populations. This will give important clues to the nature of their progenitor stars, with ramifications for many areas of astronomy {e.g., stellar evolution, nucleosynthesis, cosmology}. For some of the most recent or unusually long-lived SNe, the new HST data will provide late-time photometry that is superior to what we can obtain from the ground. This proposal is similar, but complementary to, our archival proposal in which existing HST images from other programs are used to glean information about the environments of SNe. To make the data readily available to other researchers studying these SNe, we waive the entire proprietary period.
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