Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21543321u&link_type=abstract
American Astronomical Society, AAS Meeting #215, #433.21; Bulletin of the American Astronomical Society, Vol. 42, p.373
Astronomy and Astrophysics
Astronomy
Scientific paper
In the last year, we have been using the Triple Spec Near-Infrared spectrograph on the Palomar Observatory to identify candidate dust-reddened quasars using the FIRST radio survey, the UKIDSS near-infrared survey and the SDSS optical survey. A previous campaign using the shallow near-infrared 2MASS survey, was very successful in finding dust obscured quasars by finding very red (R-K > 4, J-K > 1.7) radio sources (Glikman et al. 2007). Among them are many young, interacting galaxies (Urrutia, Lacy & Becker 2008) and a large fraction of Low Ionization Broad Absorption Line Quasars (Urrutia et al. 2009), implying that the red quasar population probes a young phase in the lifetime of an AGN. By using the same color criteria on the deeper UKIDSS survey, we are able to probe into higher redshifts and lower luminosity red quasars. This is a first step to build a luminosity function for dust-obscured quasars. We then will be able to answer the question if young quasars are more generally more luminous as their older counterparts, perhaps because of higher accretion efficiency.
Glikman Eilat
Lacy Mark
Urrutia Tanya
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