Spectral Energy Distribution of Far infrared Detected Quasars in the Lockman Hole

Details Spectral Energy Distribution of Far infrared Detected Quasars in the Lockman Hole Spectral Energy Distribution of Far infrared Detected Quasars in the Lockman Hole

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21812304d&link_type=abstract

American Astronomical Society, AAS Meeting #218, #123.04; Bulletin of the American Astronomical Society, Vol. 43, 2011

Astronomy and Astrophysics

Astronomy

Scientific paper

The far-infrared (FIR) behavior of quasars is important in disentangling the Starburst (SB) and Active Galactic Nucleus (AGN) contributions to the source. Therefore, we constructed a 24 micron selected Type I quasar sample to study their FIR properties. All of the sources were spectroscopically identified from either the Hectospec on MMT or the Sloan Digital Sky Survey (SDSS). Of the total 432 sources, 37 were detected in the HERMES survey. We compared their SEDs to existing quasar templates, and found that these FIR bright quasars differ only by an additional dust component. Further studies on the origin of the FIR emission reveal the interweaving roles SB and AGN play in powering the dust emission, depending on the dust temperature, luminosities, and the shapes of individual SEDs. The dust temperature has a wide range from 21K to 164K with a median of 50K, indicating more than one heating mechanism. We argue that the FIR emission and the quasar activities are either serendipitous occurrences or the FIR emission happened in a very short time scale.

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