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dc.contributor.authorLane, R.
dc.contributor.authorShemmer, O.
dc.contributor.authorDiamond-Stanic, A.
dc.contributor.authorFan, X.
dc.contributor.authorAnderson, S.
dc.contributor.authorBrandt, W.
dc.contributor.authorPlotkin, Richard
dc.contributor.authorRichards, G.
dc.contributor.authorSchneider, D.
dc.contributor.authorStrauss, M.
dc.identifier.citationLane, R. and Shemmer, O. and Diamond-Stanic, A. and Fan, X. and Anderson, S. and Brandt, W. and Plotkin, R. et al. 2011. The ultraviolet-to-mid-infrared spectral energy distribution of weak emission line quasars. Astrophysical Journal. 743: 163.

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 µm spectral band. The SEDs of our sources are inconsistent with those of BL Lacertae objects which are dominated by synchrotron emission due to a jetaligned 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.

dc.publisherInstitute of Physics Publishing
dc.titleThe ultraviolet-to-mid-infrared spectral energy distribution of weak emission line quasars
dc.typeJournal Article
dcterms.source.titleAstrophysical Journal

Copyright © 2011 The American Astronomical Society. All rights reserved.

curtin.departmentDepartment of Physics and Astronomy
curtin.accessStatusOpen access

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