Distributions of m_100–160 for COSMOS PACS-detected AGNs (shaded histogram) compared to the general population of PACS detected galaxies in the COSMOS field. Each panel is a different redshift bin, indicated in the upper right corner of the panel. Also in the upper right is a measure of the KS probability P_KS that the two distributions share a common parent distribution. The distributions are most different at z < 1 but become more similar at higher redshift. Note, systems with likely AGN contamination are not excluded from this plot.