The<i>Chandra</i>deep field South/GOODS survey
The<i>Chandra</i>deep field South/GOODS survey
We provide important new constraints on the nature and redshift distribution of optically faint () X-ray sources in the Chandra Deep Field South Survey. We use a large multi-wavelength data set, including the GOODS/ACS survey, the recently released Hubble Ultra Deep Field (UDF) data, and the new public VLT/ISAAC imaging. …