The Hunt for Red Quasars: Luminous Obscured Black Hole Growth Unveiled in the Stripe 82 X-Ray Survey
文献类型：期刊论文
| 作者 | 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 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2017-09-26 |
| 卷号 | 847期号:2 |
| ISSN号 | 0004-637X |
| 关键词 | galaxies: active infrared: galaxies quasars: general quasars: supermassive black holes X-rays: galaxies |
| DOI | 10.3847/1538-4357/aa87b5 |
| 英文摘要 | 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 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. |
| 语种 | 英语 |
| 出版者 | The American Astronomical Society |
| WOS记录号 | IOP:0004-637X-847-2-AA87B5 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/35860]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.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 |
| 推荐引用方式 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). |
入库方式： OAI收割
来源：国家天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。