X-ray-selected broad absorption line quasi-stellar objects

This research was based on observations obtained with XMM– Newton, an ESA science mission with instruments and contributions directly funded by ESA Member States and the National Aeronautics and Space Administration. This research was also based on observations made at the Anglo-Australian Telescope. MJP acknowledges financial support from the UK Science and Technology Facilities Council. FJC and SM acknowledge financial support through grant AYA2015-64346-C2-1-P (MINECO/FEDER). MTC acknowledges support by the Spanish Programma Nacional de Astronomia y Astrofisica under grant AYA2009-08059. MK acknowledges support by DFG grant KR 3338/3-1. The NASA/IPAC Extragalactic Database is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.