Other
Scientific paper
Jul 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992hst..prop.3519m&link_type=abstract
HST Proposal ID #3519
Other
Hst Proposal Id #3519
Scientific paper
A random sample from among 256 nearby galaxies in the UGC and ESO catalogs will be imaged in the ultraviolet (2200 A) in a Snapshot Survey. Brief (10-minute) exposures will be obtained with the FOC in its F/48 mode with a 44"x22" field of view. The images will be used to search for low-luminosity AGNs that appear as unresolved UV point sources in the nuclei of galaxies. These weak AGNs, which can be detected directly only with HST, will help define the relations between quasars, active galaxies, and normal galaxies. The images will also be used to identify regions of active star formation and to search for compact galactic cores indicative of possible central massive black holes. The sample includes a variety of Hubble types of normal galaxies, as well as peculiar and interacting galaxies. For late-type galaxies, the visible-light leak to the detector will be small (a few %) and the UV light distribution will determine the spatial distribution of young stellar populations. The small field-of-view, high-resolution images will complement rocket-borne and ASTRO observations, and will provide the community with a valuable database. All objects that will be imaged in the UV by other Cycle 2 programs have been removed from the sample.
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