%0 Journal Article
%T A Population of Dust-Rich Quasars at z ~ 1.5
%A Y. Sophia Dai
%A Jacqueline Bergeron
%A Martin Elvis
%A Alain Omont
%A Jia-Sheng Huang
%A Jamie Bock
%A Asantha Cooray
%A Giovanni Fazio
%A Evanthia Hatziminaoglou
%A Edo Ibar
%A Georgios E. Magdis
%A Seb J. Oliver
%A Mathew J. Page
%A Ismael Perez-Fournon
%A Dimitra Rigopoulou
%A Isaac G. Roseboom
%A Douglas Scott
%A Myrto Symeonidis
%A Markos Trichas
%A Joaquin D. Vieira
%A Christopher N. A. Willmer
%A Michael Zemcov
%J Physics
%D 2012
%I arXiv
%R 10.1088/0004-637X/753/1/33
%X We report Herschel SPIRE (250, 350, and 500 micron) detections of 32 quasars with redshifts 0.5 < z < 3.6 from the Herschel Multi-tiered Extragalactic Survey. These sources are from a MIPS 24 micron flux-limited sample of 326 quasars in the Lockman Hole Field. The extensive multi-wavelength data available in the field permit construction of the rest-frame Spectral Energy Distributions (SEDs)from ultraviolet to the mid-infrared for all sources, and to the far-infrared (FIR) for the 32 objects. Most quasars with Herschel FIR detections show dust temperatures in the range of 25K to 60K, with a mean of 34K. The FIR luminosities range from 10^{11.3} to 10^{13.5} Lsun, qualifying most of their hosts as ultra- or hyper-luminous infrared galaxies. These FIR-detected quasars may represent a dust-rich population, but with lower redshifts and fainter luminosities than quasars observed at ~ 1 mm. However, their FIR properties cannot be predicted from shorter wavelengths (0.3--20 micron, rest-frame), and the bolometric luminosities derived using the 5100 A index may be underestimated for these FIR-detected quasars. Regardless of redshift, we observed a decline in the relative strength of FIR luminosities for quasars with higher near-infrared luminosities.
%U http://arxiv.org/abs/1205.1808v1