The Sloan Digital Sky Survey Reverberation Mapping Project: Initial C iv?Lag Results from Four Years of Data

doi:10.3847/1538-4357/ab4ea5

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	The Sloan Digital Sky Survey Reverberation Mapping Project: Initial C iv?Lag Results from Four Years of Data
	Grier,C. J.25,26,27; Shen,Yue 23,24; Horne,Keith 22; Brandt,W. N.21,26,27; Trump,J. R.20; Hall,P. B.19; Kinemuchi,K.18; Starkey,David 22,24; Schneider,D. P.26,27; Ho,Luis C.16,17
刊名	The Astrophysical Journal
	2019-12-09
卷号	887 期号:1
关键词	Reverberation mapping Quasars Active galactic nuclei Supermassive black holes
ISSN号	0004-637X
DOI	10.3847/1538-4357/ab4ea5
英文摘要	Abstract We present reverberation-mapping (RM) lags and black hole mass measurements using the C ivλ1549 broad emission line from a sample of 348 quasars monitored as a part of the Sloan Digital Sky Survey RM Project. Our data span four years of spectroscopic and photometric monitoring for a total baseline of 1300 days, allowing us to measure lags up to ～750 days in the observed frame (this corresponds to a rest-frame lag of ～300 days in a quasar at z?=?1.5 and ～190 days at z?=?3). We report significant time delays between the continuum and the C ivλ1549 emission line in 48?quasars, with an estimated false-positive detection rate of 10%. Our analysis of marginal lag measurements indicates that there are on the order of ～100 additional lags that should be recoverable by adding more years of data from the program. We use our measurements to calculate black hole masses and fit an updated C iv?radius–luminosity relationship. Our results significantly increase the sample of quasars with C iv?RM results, with the quasars spanning two orders of magnitude in luminosity toward the high-luminosity end of the C iv?radius–luminosity relation. In addition, these quasars are located at some of the highest redshifts (z?≈?1.4–2.8) of quasars with black hole masses measured with RM. This work constitutes the first large sample of C iv?RM measurements in more than a dozen quasars, demonstrating the utility of multiobject RM campaigns.
语种	英语
出版者	The American Astronomical Society
WOS记录号	IOP:0004-637X-887-1-AB4EA5
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/28661]
专题	中国科学院国家天文台
作者单位	1.School of Astronomy and Space Science, University of Chinese Academy of Sciences, People’s Republic of China 2.Canada Aviation and Space Museum, 11 Aviation Parkway, Ottawa, ON, K1K 4Y5, Canada 3.Berkeley Center for Cosmological Physics, University of California Berkeley, 341 Campbell Hall, Berkeley, CA 94720, USA 4.Institut d’Astrophysique de Paris, Sorbonne Université and CNRS, 98bis Boulevard Arago, F-75014, Paris, France 5.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, People’s Republic of China 6.School of Mathematics and Physics, Changzhou University, Changzhou 213164, People’s Republic of China 7.Aix Marseille Université, CNRS, LAM (Laboratoire d’Astrophysique de Marseille) UMR 7326, F-13388, Marseille, France 8.Institute of Physics, Laboratory of Astrophysics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Observatoire de Sauverny, 1290 Versoix, Switzerland 9.Department of Astronomy, University of California, Berkeley, CA 94720, USA 10.Department of Physics and Astronomy, University of Utah, 115 S. 1400 E., Salt Lake City, UT 84112, USA
推荐引用方式 GB/T 7714	Grier,C. J.,Shen,Yue,Horne,Keith,et al. The Sloan Digital Sky Survey Reverberation Mapping Project: Initial C iv?Lag Results from Four Years of Data[J]. The Astrophysical Journal,2019,887(1).
APA	Grier,C. J..,Shen,Yue.,Horne,Keith.,Brandt,W. N..,Trump,J. R..,...&Zou,Hu.(2019).The Sloan Digital Sky Survey Reverberation Mapping Project: Initial C iv?Lag Results from Four Years of Data.The Astrophysical Journal,887(1).
MLA	Grier,C. J.,et al."The Sloan Digital Sky Survey Reverberation Mapping Project: Initial C iv?Lag Results from Four Years of Data".The Astrophysical Journal 887.1(2019).