The Hunt for Red Quasars : Luminous Obscured Black Hole Growth Unveiled in the Stripe 82 X-Ray Survey

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dc.contributor.author LaMassa, Stephanie M.
dc.contributor.author Glikman, Eilat
dc.contributor.author Brusa, Marcella
dc.contributor.author Rigby, Jane R.
dc.contributor.author Ananna, Tonima Tasnim
dc.contributor.author Stern, Daniel
dc.contributor.author Lira, Paulina
dc.contributor.author Urry, C. Megan
dc.contributor.author Salvato, Mara
dc.contributor.author Alexandroff, Rachael
dc.contributor.author Allevato, Viola
dc.contributor.author Cardamone, Carolin
dc.contributor.author Civano, Francesca
dc.contributor.author Coppi, Paolo
dc.contributor.author Farrah, Duncan
dc.contributor.author Komossa, S.
dc.contributor.author Lanzuisi, Giorgio
dc.contributor.author Marchesi, Stefano
dc.contributor.author Richards, Gordon
dc.contributor.author Trakhtenbrot, Benny
dc.contributor.author Treister, Ezequiel
dc.date.accessioned 2017-10-23T10:48:09Z
dc.date.available 2017-10-23T10:48:09Z
dc.date.issued 2017-10-01
dc.identifier.citation LaMassa , S M , Glikman , E , Brusa , M , Rigby , J R , Ananna , T T , Stern , D , Lira , P , Urry , C M , Salvato , M , Alexandroff , R , Allevato , V , Cardamone , C , Civano , F , Coppi , P , Farrah , D , Komossa , S , Lanzuisi , G , Marchesi , S , Richards , G , Trakhtenbrot , B & Treister , E 2017 , ' The Hunt for Red Quasars : Luminous Obscured Black Hole Growth Unveiled in the Stripe 82 X-Ray Survey ' , Astrophysical Journal , vol. 847 , no. 2 , 100 . https://doi.org/10.3847/1538-4357/aa87b5
dc.identifier.other PURE: 91430002
dc.identifier.other PURE UUID: 2d6c54b5-925e-4341-b969-9489d07a640d
dc.identifier.other WOS: 000411792200008
dc.identifier.other Scopus: 85031113290
dc.identifier.uri http://hdl.handle.net/10138/226026
dc.description.abstract 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 deg(2) Stripe 82 X-ray survey. One sample, which is similar to 89% complete to K <16 (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 (> 4, Vega). The fainter sample (K > 17, 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 0.59 <z <2.5. 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 (z > 0.5), and a greater percentage have high X-ray luminosities (L-X,L- full > 10(44) 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 z > 1 missed by optical surveys. en
dc.format.extent 21
dc.language.iso eng
dc.relation.ispartof Astrophysical Journal
dc.rights unspecified
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject galaxies: active
dc.subject infrared: galaxies
dc.subject quasars: general
dc.subject quasars: supermassive black holes
dc.subject X-rays: galaxies
dc.subject ACTIVE GALACTIC NUCLEI
dc.subject DIGITAL-SKY-SURVEY
dc.subject SIMILAR-TO 2
dc.subject DUST-REDDENED QUASARS
dc.subject WIDE-FIELD SURVEY
dc.subject CHANDRA MULTIWAVELENGTH PROJECT
dc.subject ABSORPTION-LINE SYSTEMS
dc.subject XMM-NEWTON OBSERVATIONS
dc.subject PEAKED EMISSION-LINES
dc.subject MAJOR GALAXY MERGERS
dc.subject 115 Astronomy, Space science
dc.title The Hunt for Red Quasars : Luminous Obscured Black Hole Growth Unveiled in the Stripe 82 X-Ray Survey en
dc.type Article
dc.contributor.organization Department of Physics
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.3847/1538-4357/aa87b5
dc.relation.issn 0004-637X
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

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