Supermassive Black Hole Activity in Field and Cluster Early-Type Galaxies

Details Supermassive Black Hole Activity in Field and Cluster Early-Type Galaxies Supermassive Black Hole Activity in Field and Cluster Early-Type Galaxies

Aug 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011scgg.conf...34m&link_type=abstract

"Structure in Clusters and Groups of Galaxies in the Chandra Era, 2011 Chandra Science Workshop held July 12-14, 2011. Edited by

Computer Science

Scientific paper

Initial results from a Large Chandra Program targeting highly sub-Eddington supermassive black hole activity in local early-type field galaxies are provided. This is a comparison study to the AMUSE-Virgo project, which examined 100 Virgo early-types. The field galaxies presented here may show a modest tendency toward higher nuclear X-ray luminosities at a given black hole mass, with a ``downsizing" trend of relatively higher Eddington ratios in lower mass objects consistent with that found for Virgo. X-ray luminosity is found to scale with optical bulge luminosity similarly (again with a marginal offset) for field and cluster galaxies. The potential influence of the large-scale environment upon low-level inefficient accretion (e.g., through mediation of the gas supply) is discussed.

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