Cores of Early-Type Galaxies: Cycle 1 Observations

Details Cores of Early-Type Galaxies: Cycle 1 Observations Cores of Early-Type Galaxies: Cycle 1 Observations

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991hst..prop.2600f&link_type=abstract

HST Proposal ID #2600

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Hst Proposal Id #2600

Scientific paper

We are conducting a comprehensive imaging survey of the cores of early-type galaxies and spiral bulges. The high spatial resolving power of deconvolved HST images will be used to measure core structure parameters over a wide range of core size and luminosity. PC images in F555W will be taken of 45 galaxies covering a range of 9 magnitudes in luminosity. Ground-based photometry and kinematic data will be obtained to augment HST data at larger radii. Observations will be used to construct dynamical models of the core regions using a maximum-entropy technique. Ground-based spectroscopy will be used in conjunction with HST-ground luminosity profiles. We may be able to obtain strong evidence of black holes in certain selected BH candidates. A major question which we will address is the core structure of small early-type galaxies and the differences between low-luminosity Es on the one hand and dwarf spheroidals and giant Es on the other.

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