The Hunt for Red Quasars: Luminous Obscured Black Hole Growth Unveiled in the Stripe 82 X-Ray Survey
LaMassa,Stephanie M.1; Glikman,Eilat2; Brusa,Marcella3,4; Rigby,Jane R.5; Ananna,Tonima Tasnim6,7; Stern,Daniel8; Lira,Paulina9; Urry,C. Megan6,7; Salvato,Mara10; Alexandroff,Rachael11; Allevato,Viola12,13; Cardamone,Carolin14; Civano,Francesca15; Coppi,Paolo6,7; Farrah,Duncan16; Komossa,S.17; Lanzuisi,Giorgio3,4; Marchesi,Stefano18; Richards,Gordon19; Trakhtenbrot,Benny20; Treister,Ezequiel21
Source PublicationThe Astrophysical Journal
AbstractAbstract We present results of a ground-based near-infrared campaign with Palomar TripleSpec, Keck NIRSPEC, and Gemini GNIRS to target two samples of reddened active galactic nucleus (AGN) candidates from the 31 deg2 Stripe 82 X-ray survey. One sample, which is ~89% complete to (Vega), consists of eight confirmed AGNs, four of which were identified with our follow-up program, and is selected to have red R???K colors ( , Vega). The fainter sample ( , Vega) represents a pilot program to follow-up four sources from a parent sample of 34 that are not detected in the single-epoch SDSS catalog and have WISE quasar colors. All 12 sources are broad-line AGNs (at least one permitted emission line has an FWHM exceeding 1300 km s?1) and span a redshift range . Half the (R ? K)-selected AGNs have features in their spectra suggestive of outflows. When comparing these sources to a matched sample of blue Type 1 AGNs, we find that the reddened AGNs are more distant ( ), and a greater percentage have high X-ray luminosities ( erg s?1). Such outflows and high luminosities may be consistent with the paradigm that reddened broad-line AGNs represent a transitory phase in AGN evolution as described by the major merger model for black hole growth. Results from our pilot program demonstrate proof of concept that our selection technique is successful in discovering reddened quasars at missed by optical surveys.
Keywordgalaxies: active infrared: galaxies quasars: general quasars: supermassive black holes X-rays: galaxies
WOS IDIOP:0004-637X-847-2-aa87b5
PublisherThe American Astronomical Society
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Document Type期刊论文
Affiliation1.Space Telescope Science Institute, 3700 San Martin Drive, Baltimore MD, 21218, USA
2.Department of Physics, Middlebury College, Middlebury, VT 05753, USA
3.INAF-Osservatorio Astronomico di Bologna, via Ranzani 1, I-40127 Bologna, Italy
4.Dipartimento di Fisica e Astronomia, Universita’ di Bologna, viale Berti Pichat 6/2, I-40127 Bologna, Italy
5.Observational Cosmology Lab, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
6.Yale Center for Astronomy & Astrophysics, Physics Department, P.O. Box 208120, New Haven, CT 06520, USA
7.Department of Physics, Yale University, P.O. Box 208121, New Haven, CT 06520, USA
8.Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Mail Stop 169-221, Pasadena, CA 91109, USA
9.Departamento de Astronomía, Universidad de Chile, Santiago, Chile
10.Max-Planck-Institute für extraterrestriche Physik, D-85748 Garching, Germany
11.Center for Astrophysical Sciences, Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD, 21218, USA
12.Department of Physics, University of Helsinki, Gustaf H?llstr?min katu 2a, FI-00014 Helsinki, Finland
13.University of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, MD 21250, USA
14.Department of Math & Science, Wheelock College, 200 Riverway, Boston, MA 02215, USA
15.Smithsonian Astrophysical Observatory, 60 Garden Street, Cambridge, MA 02138, USA
16.Department of Physics MC 0435, Virginia Polytechnic Institute and State University, 850 West Campus Drive, Blacksburg, VA 24061, USA
17.National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, China
18.Department of Physics & Astronomy, Clemson University, Clemson, SC 29634, USA
19.Department of Physics, Drexel University, 3141 Chestnut Street, Philadelpha, PA 19104, USA
20.Institute for Astronomy, Department of Physics, ETH Zurich, Wolfgang-Pauli-Strasse 27, CH-8093 Zurich, Switzerland
21.Instituto de Astrofísica, Facultad de Física, Pontificia Universidad Católica de Chile, Casilla 306, Santiago 22, Chile
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GB/T 7714
LaMassa,Stephanie M.,Glikman,Eilat,Brusa,Marcella,et al. The Hunt for Red Quasars: Luminous Obscured Black Hole Growth Unveiled in the Stripe 82 X-Ray Survey[J]. The Astrophysical Journal,2017,847(2).
APA LaMassa,Stephanie M..,Glikman,Eilat.,Brusa,Marcella.,Rigby,Jane R..,Ananna,Tonima Tasnim.,...&Treister,Ezequiel.(2017).The Hunt for Red Quasars: Luminous Obscured Black Hole Growth Unveiled in the Stripe 82 X-Ray Survey.The Astrophysical Journal,847(2).
MLA LaMassa,Stephanie M.,et al."The Hunt for Red Quasars: Luminous Obscured Black Hole Growth Unveiled in the Stripe 82 X-Ray Survey".The Astrophysical Journal 847.2(2017).
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