AGN Feedback Regulating Early-type Galaxy Evolution

Details AGN Feedback Regulating Early-type Galaxy Evolution AGN Feedback Regulating Early-type Galaxy Evolution

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...209.3801s&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #38.01; Bulletin of the American Astronomical Society, V

Astronomy and Astrophysics

Astronomy

Scientific paper

We present observations of SDSS early-type galaxies observed by the Galaxy Evolution Explorer satellite (GALEX). The GALEX Near-UV filter is extremely sensitive to small amounts of residual star-formation. We find that the likelyhood of early-type galaxies undergoing such residual star-formation is highly correlated with their velocity dispersion. We derive an empirical relation for a critical black hole mass above which the outflows from supermassive black holes suppress star formation in galaxies by heating and expelling cold gas and apply this relation in a semi-analytic model of galaxy formation to investigate the importance of AGN feedback for early-type evolution.

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