The Nature of Dusty Nuclear Disks in Early Type Galaxies

Details The Nature of Dusty Nuclear Disks in Early Type Galaxies The Nature of Dusty Nuclear Disks in Early Type Galaxies

Jul 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999hst..prop.8386f&link_type=abstract

HST Proposal ID #8386

Physics

Hst Proposal Id #8386 Galaxy Structure And Dynamics

Scientific paper

We propose to use WFPC2 images extracted from the HST archive to construct a volume limited {v <= 3000 km/s} sample of E and E/S0 galaxies with 3Sigma or greater IRAS detections at 100 micron to search for small {r 1''} dusty nuclear disks. Preliminary analysis of WFPC2 archive images shows that more than half of the sample will have small nuclear disks and disk-like structures. The galaxies with disks will provide an efficient means to answer outstanding questions about the relationship between massive black holes and their host galaxies. Subsequent HST/STIS and ground-based infrared spectroscopy of the disks will be used measure the central potentials and mass distributions. We will use the archive images to: o study the role played by galaxy environment in determining the frequency of dusty disks; o gain insights into the origin of the dust and the role of the stellar potential and the galaxy merging history in shaping the disks; o investigate the connection between the presence and morphology of the disks and the frequency and intensity of the nuclear activity.

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