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Journal article
The Ultraviolet-to-Mid-Infrared Spectral Energy Distribution of Weak Emission Line Quasars
The Astrophysical journal, v 743(2), pp 163-jQuery1323900478067='48'
23 Sep 2011
Abstract
We present Spitzer Space Telescope photometry of 18 Sloan Digital Sky Survey
(SDSS) quasars at 2.7 <= z <= 5.9 which have weak or undetectable
high-ionization emission lines in their rest-frame ultraviolet (UV) spectra
(hereafter weak-lined quasars, or WLQs). The Spitzer data are combined with
SDSS spectra and ground-based, near-infrared (IR) photometry of these sources
to produce a large inventory of spectral energy distributions (SEDs) of WLQs
across the rest-frame ~0.1-5 mum spectral band. The SEDs of our sources are
inconsistent with those of BL Lacertae objects which are dominated by
synchrotron emission due to a jet aligned close to our line-of-sight, but are
consistent with the SED of ordinary quasars with similar luminosities and
redshifts that exhibit a near-to-mid-IR 'bump', characteristic of hot dust
emission. This indicates that broad emission lines in WLQs are intrinsically
weak, rather than suffering continuum dilution from a jet, and that such
sources cannot be selected efficiently from traditional photometric surveys.
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Details
- Title
- The Ultraviolet-to-Mid-Infrared Spectral Energy Distribution of Weak Emission Line Quasars
- Creators
- Ryan A Lane - University of North TexasOhad Shemmer - University of North TexasAleksandar M Diamond-Stanic - University of California, San DiegoXiaohui Fan - Steward Health Care SystemScott F Anderson - University of WashingtonW. N Brandt - Pennsylvania State UniversityRichard M Plotkin - University of AmsterdamGordon T Richards - Drexel UniversityDonald P Schneider - Pennsylvania State UniversityMichael A Strauss - Princeton University
- Publication Details
- The Astrophysical journal, v 743(2), pp 163-jQuery1323900478067='48'
- Publisher
- Institute of Physics (IOP)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Web of Science ID
- WOS:000298178400065
- Scopus ID
- 2-s2.0-83455181497
- Other Identifier
- 991019168580904721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Astronomy & Astrophysics