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The Lack of Torus Emission from BL Lacertae Objects: An Infrared View of Unification with WISE
Richard M. Plotkin, Scott F. Anderson, W. N. Brandt +3
We use data from the Wide-Field Infrared Survey Explorer (WISE) to perform a statistical study on the mid-infrared (IR) properties of a large number () of BL Lac objects…
X-ray and Multiwavelength Insights into the Nature of Weak Emission-Line Quasars at Low Redshift
Jianfeng Wu, W. N. Brandt, Scott F. Anderson +5
(Abridged) We report on the X-ray and multiwavelength properties of 11 radio-quiet quasars with weak or no emission lines identified by the Sloan Digital Sky Survey (SDSS) with red…
The Ultraviolet-to-Mid-Infrared Spectral Energy Distribution of Weak Emission Line Quasars
Ryan A. Lane, Ohad Shemmer, Aleksandar M. Diamond-Stanic +7
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 the…
Dynamical Black Hole Masses of BL Lac Objects from the Sloan Digital Sky Survey
Richard M. Plotkin, Sera Markoff, Scott C. Trager +1
We measure black hole masses for 71 BL Lac objects from the Sloan Digital Sky Survey with redshifts out to z~0.4. We perform spectral decompositions of their nuclei from their host…
Weak-Line Quasars at High Redshift: Extremely High Accretion Rates or Anemic Broad-Line Regions?
Ohad Shemmer, Benny Trakhtenbrot, Scott F. Anderson +9
We present Gemini-North K-band spectra of two representative members of the class of high-redshift quasars with exceptionally weak rest-frame ultraviolet emission lines (WLQs), SDS…
Multiwavelength Observations of Radio-quiet Quasars with Weak Emission Lines
Richard M. Plotkin, Scott F. Anderson, W. N. Brandt +5
We present radio and X-ray observations, as well as optical light curves, for a subset of 26 BL Lac candidates from the Sloan Digital Sky Survey (SDSS) lacking strong radio emissio…