LAUSR

JA acknowledges support from an Science & Technology Facilities Council (STFC) Ernest Rutherford Fellowship, grant code: ST/P004172/1. AG acknowledges the THALES project 383549 that is jointly funded by the European Union and the Greek Government in the framework of the programme ‘Education and lifelong learning’. This work is based in part on observations taken by the CANDELS Multi-Cycle Treasury Program and the 3D-HST Treasury Program (GO 12177 and 12328) with the NASA/ESA HST, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555. Also based in part on the Ks-selected catalogue of the COSMOS/UltraVISTA field from Muzzin et al. (2013), which contains PSF-matched photometry in 30 photometric bands and includes the available GALEX (Martin et al. 2005), CFHT/Subaru (Capak et al. 2007), UltraVISTA (McCracken et al. 2012), S-COSMOS (Sanders et al. 2007), and zCOSMOS (Lilly et al. 2009) data sets. The scientific results reported in this article are based to a significant degree on observations made by the Chandra X-ray Observatory.