Optical Properties of All the X-ray Sources within the GOODS HST/ACS Survey of the Chandra Deep Field South

摘要: We present multi-band optical imaging from the GOODS HST/ACS treasury program of over 200 X-ray emitting sources located within the Chandra Deep Field South, consisting predominantly of active galactic nuclei (AGN) and starbursts, as well as a number of ultra-luminous X-ray sources. We describe the overall optical and X-ray properties of various populations within this sample, which includelocal'galaxies (redshifts below about 0.2), as well as unobscured (Type 1) AGN and optically faint X-ray sources which are likely obscured AGN of moderate luminosity located at redshifts in the range 1-3. Most of these AGN are of much lower luminosity than the high-luminosity quasars that are typically observed at these redshifts; instead, their luminosities are more representative of Seyferts in the nearby universe, which have rarely been studied at distances above a few hundred Mpc. Our present sample therefore …