Presentation #408.08 in the session Black Holes.
The active galactic nucleus (AGN) occupation fraction as a function of galaxy mass can be used to discern models for the seeding mechanism of supermassive black holes. We compute the AGN occupation fraction using over 1 million galaxies in the combined Extended Chandra Deep Field South (ECDFS), the XMM Large Scale Structure Survey (XMM-LSS), and Elais-S1 (ES1) extragalactic fields. AGN fraction and galaxy masses were determined from the SED fitting published for the LSST Deep-Drilling Fields. We present our preliminary results for AGN selected via the SED fits, X-ray, and mid-IR color selection and discuss their implications on supermassive black hole seeds.