AGN accretion modes, host galaxies, and clustering in the 9 square degree Bootes field

Ryan C. Hickox

It is increasingly clear that AGN play a key role in the evolution of their host galaxies, and that AGN detected at different wavelengths or with different luminosities may represent various modes of supermassive black hole accretion. I will present studies of AGN detected in the 9 square degree multiwavelength survey in Bootes. First, we measure the two-point cross-correlation of X-ray and radio-selected AGN and normal galaxies at 0.25<z<0.8, using redshifts from MMT/AGES. We find that X-ray AGN are preferentially found in galaxies that lie in the "green valley" of color-magnitude space, and that the clustering, X-ray spectra, and Eddington ratios vary significantly with host galaxy color. By contrast, radio AGN are preferentially found in massive red sequence galaxies and have very low average Eddington ratios. I will discuss how these results may place constraints on the concurrent evolution of AGN and their host galaxies. I will finally give a brief overview of our studies of AGN with in the mid-IR with Spitzer, including the selection of obscured, high-redshift quasars.