NOAO >   Observing Info >   Approved Programs >   2014A-0510

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Proposal Information for 2014A-0510


PI: Benjamin Clement, University of Arizona (Astronomy), bclement@as.arizona.edu
Address: USA

CoI: Jean-Gabriel Cuby, Laboratoire d'Astrophysique de Marseille (France)
CoI: Stephane Basa, Laboratoire d'Astrophysique de Marseille (France)
CoI: Jeremie Chatron, Laboratoire d'Astrophysique de Marseille (France)
CoI: Chris Willott, Herzberg Institute of Astrophysics

Title: Photometric downselection of z 7 quasars from the CFHQSIR survey

Abstract: CFHQSIR is a CFHT Large Programme carried out with the Wide Field IR camera WIRCam from 2011 to 2013. CFHQSIR consists in WIRCam Y-band imaging of the four CFHTLS-WIDE fields, totalling 150 sq. degrees. The main scientific objective of CFHQSIR is to search for quasars at redshifts 7. Quasars at z 7 provide key information on re-ionization and on the state of the InterGalactic Medium at high redshift, on the build-up of nuclear black holes and relationship with the host galaxies. Our CFHT Large Programme should find of the order of three such quasars (average), from an extrapolation of the quasar Luminosity Function at lower redshifts and subject to Poisson fluctuations. We request 5.7 hrs of Gemini-North time for final downselection of our candidates from photometric observations. Follow-up near-infrared imaging will allow us to discriminate brown dwarfs from high-z quasars. We need this time to complete our Large Programme, taking advantage of the narrow field of view of NIRI well suited for follow-up observations of single object.


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NOAO >   Observing Info >   Approved Programs >   2014A-0510

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