Computer Science
Scientific paper
Jul 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991hst..prop.4249j&link_type=abstract
HST Proposal ID #4249
Computer Science
Hst Proposal Id #4249
Scientific paper
We will determine the prevalence of massive black holes in a complete sample of bright Virgo ellipticals using FOS spectra and WFPC surface photometry. We will correlate the dynamical evidence for massive black holes with indicators of nuclear activity (radio and optical emission, and star formation). Additionally, we will use our data to study the stellar dynamics and demography of the 'cores' of these elliptical galaxies. Our observations will establish the fundamental properties of the nuclear regions: photometric profiles, rotation and dispersion velocities, and spectroscopic metallicity indicies. FOC-UV images will reveal the presence of young stars and/or nonthermal emission. We will determine black hole masses by comparing the predictions of self-consistent dynamical models of the core to the observed surface photometry and kinematics. We wil model the stellar populations by comparing the observed metallicities and spectral energy distributions to synthetic spectra constructed from stellar libraries.
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