Computer Science
Scientific paper
Jul 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995hst..prop.5999p&link_type=abstract
HST Proposal ID #5999
Computer Science
Hst Proposal Id #5999 Galaxies &Amp, Clusters
Scientific paper
S0 galaxies as a class have received little attention and yet many fundamental questions remain concerning their nature. Their central regions are poorly understood because of limited resolution from ground-based observations, and yet these regions may contain vital clues about the nature and evolution of S0s and their relationship to spiral and elliptical galaxies. Interpretation of spectroscopic data in particular has been hampered by uncertainties about the light distribution at small radii. We propose a SNAPSHOT PC imaging survey of the cores of 40 nearby E/S0, S0 and S0/a galaxies, selected to cover a large range in luminosity. The goal of this project is to characterize the nuclei of such galaxies over a broad range of luminosities and within a variety of environments {field, Virgo and Fornax}. These data will provide both qualitative and quantitative information on nuclear profiles and the presence of nuclear cusps, young and old stellar condensations, inner stellar disks and dust distribution in the central regions of these enigmatic galaxies. We will compare these properties to those of ellipticals and spiral galaxies, which have been well- studied with HST. These data will provide a first step towards establishing the frequency or ubiquity of black holes in the centers of disk galaxies. There is a significant possibility of discovery of unusual features that will merit follow-up study by the community.
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