NOAO >   Observing Info >   Approved Programs >   2004A-0310

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Proposal Information for 2004A-0310


PI: Richard Green, NOAO, rgreen@noao.edu
Address: KPNO, PO Box 26732, Tucson, AZ 85726-6732, USA

CoI: Scott Croom, Anglo-Australian Observatory
CoI: Steve Warren, Imperial College
CoI: Pat Hall, Princeton/Universidad Catolica de Chile
CoI: Michael Brown, NOAO
CoI: Arjun Dey, NOAO
CoI: Buell Jannuzi, NOAO
CoI: Paul Smith, Steward Observatory
CoI: Dara Norman, NOAO/CTIO
CoI: Malcolm Smith, NOAO/CTIO
CoI: Glenn Tiede, University of Florida

Title: A Deep Wide-Field Infrared Survey for QSOs

Abstract: We propose the first deep wide-field infrared-selected survey for QSOs. The purpose is to determine the contribution of QSOs to the universal energy budget over the optical-infrared window as a function of cosmic time. A fuller census of accreting objects must include the impact of dust in the host galaxy, possibly associated with accompanying starburst activity, and in the circumnuclear torus. We are using the unique optical and IR deep imaging data provided by the 18 sq. deg. NOAO Deep Wide-Field Survey (filters, Bw, R, I, J, H, K). We request 4 nights with WIYN/Hydra in order to obtain spectroscopic identifications in the full 9 sq.deg. of the Bootes field of the NDWFS. By using the K- excess (KX) method we will select a complete sample of QSOs, flux limited in the K-band, that is minimally affected by dust extinction or by intrinsically red continuum slopes. These data will enable progress toward our survey aims, namely, to i) compare the completeness of UVX and KX samples, ii) detect a complete sample of QSOs in the redshift desert 2.5<z<3.2, iii) determine the fraction of red QSOs, iv) measure the K-band luminosity function of QSOs to z=4.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2004A-0310

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