Four Quasars above Redshift 6 Discovered by the Canada-France High-z Quasar Survey

  title={Four Quasars above Redshift 6 Discovered by the Canada-France High-z Quasar Survey},
  author={Chris J. Willott and Philippe Delorme and Alain Omont and Jacqueline Bergeron and Xavier Delfosse and Thierry Forveille and Loic Albert and C{\'e}line Reyl{\'e} and Gary J. Hill and Michael A. Gully-Santiago and Phillip Vinten and David. Crampton and John B. Hutchings and D. Schade and Luc Simard and Marcin Sawicki and A. Beelen and Pierre Cox},
  journal={The Astronomical Journal},
The Canada-France High-z Quasar Survey (CFHQS) is an optical survey designed to locate quasars during the epoch of reionization. In this paper we present the discovery of the first four CFHQS quasars at redshifts greater than 6, including the most distant known quasar, CFHQS J2329-0301 at z = 6.43. We describe the observational method used to identify the quasars and present optical, infrared, and millimeter photometry and optical and near-infrared spectroscopy. We investigate the dust… 

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