A census of AGN activity in the local Universe

Details A census of AGN activity in the local Universe A census of AGN activity in the local Universe

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sptz.prop.3124a&link_type=abstract

Spitzer Proposal ID #3124

Computer Science

Scientific paper

It is well established that almost all galaxies harbor a central super-massive black hole (SMBHs). However, how many of these SMBHs are actively accreting? The answer to this question can provide constraints on the growth of local SMBHs, form the basis for determining the definitive obscured/unobscured local AGN ratio, better define the fraction of nearby galaxies that harbor AGNs, and further our understanding of the AGN contribution to the infrared and X-ray backgrounds. Amazingly, this fundamental question has not yet been fully answered. We propose here for IRS high-resolution spectroscopy and MIPS 24 micron imaging of a distance-limited (<15 Mpc) infrared selected galaxy sample to provide a census of AGN activity in the local Universe. Our observations are designed so that we can detect even weak AGN components in our galaxy sample.

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