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Title: Seeking the epoch of maximum luminosity for dusty quasars

Infrared luminosities νL{sub ν}(7.8 μm) arising from dust reradiation are determined for Sloan Digital Sky Survey (SDSS) quasars with 1.4 10{sup 46.6} erg s{sup –1} for all 2 5 mag of ultraviolet extinction. We present a new summary of obscured quasars discovered with the Spitzer Infrared Spectrograph and determine the infrared luminosity function of these obscured quasars at z ∼ 2.1. This is compared with infrared luminosity functions of optically discovered, unobscured quasars in the SDSS and in the AGN and Galaxy Evolution Survey. The comparison indicates comparable numbers of obscured and unobscured quasars at z ∼ 2.1 with a possible excess of obscured quasars at fainter luminosities.
Authors:
 [1] ; ;  [2]
  1. Department of Theoretical Physics, Faculty of Physics, Yerevan State University, Yerevan, 0025 (Armenia)
  2. Center for Radiophysics and Space Research, Cornell University, Ithaca, NY 14853 (United States)
Publication Date:
OSTI Identifier:
22365541
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 790; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; COMPARATIVE EVALUATIONS; DETECTION; DISTANCE; DUSTS; EVOLUTION; GALAXIES; INFRARED SURVEYS; LUMINOSITY; QUASARS; RED SHIFT; ULTRAVIOLET RADIATION