NOAO >   Observing Info >   Approved Programs >   2004B-0232

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Proposal Information for 2004B-0232


PI: Tanya Urrutia, UC Davis, urrutia@physics.ucdavis.edu
Address: Department of Physics, One Shields Ave, Davis, California 95616, USA

CoI: Robert H. Becker, UC Davis
CoI: Mark Lacy, IPAC Caltech
CoI: Michael Gregg, UC Davis

Title: Infrared Photometry of Red Quasar Candidates in the Postman Field

Abstract: We found a sample of 60 I-Band selected point-like objects with radio counterparts with 20.5 < I < 21.5. A previous study in the same region (I < 20.5) has already successfully identified several so called "red quasars", broad emission line quasars which have been reddened by dust. We expect at least 50 % of this sample to be quasars. A large fraction of these are also expected to be part of the red quasar population. We propose to do J, H, K and L photometry of these objects to obtain continuum information in the infrared. This will allow us to separate the quasars from the stars and galaxies. The overall shape of the spectral energy distribution will also tell us the amount and the nature of obscuration of the quasar. Follow up spectroscopy on these quasar candidates is planned on KECK.


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NOAO >   Observing Info >   Approved Programs >   2004B-0232

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