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ESTIMATING BLACK HOLE MASSES IN ACTIVE GALACTIC NUCLEI USING THE Mg II lambda 2800 EMISSION LINE
Wang JG(王建国)1,2,3,4; Dong, XB2,5; Wang, TG2,5; Ho, LC6; Yuan WM(袁为民)1; Wang, HY2,5; Zhang, K2,5; Zhang, SH2,5; Zhou, HY2,5; Wang, JG (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Yunnan, Peoples R China.
Source PublicationASTROPHYSICAL JOURNAL
2009-12-20
Volume707Issue:2Pages:1334-1346
DOI10.1088/0004-637X/707/2/1334
Contribution Rank第1完成单位
Indexed BySCI
KeywordBlack Hole Physics Galaxies: Active Quasars: Emission Lines Quasars: General
AbstractWe investigate the relationship between the linewidths of broad Mg II lambda 2800 and H beta in active galactic nuclei (AGNs) to refine them as tools to estimate black hole (BH) masses. We perform a detailed spectral analysis of a large sample of AGNs at intermediate redshifts selected from the Sloan Digital Sky Survey, along with a smaller sample of archival ultraviolet spectra for nearby sources monitored with reverberation mapping (RM). Careful attention is devoted to accurate spectral decomposition, especially in the treatment of narrow-line blending and Fe II contamination. We show that, contrary to popular belief, the velocity width of Mg II tends to be smaller than that of H beta, suggesting that the two species are not cospatial in the broad-line region. Using these findings and recently updated BH mass measurements from RM, we present a new calibration of the empirical prescriptions for estimating virial BH masses for AGNs using the broad Mg II and H beta lines. We show that the BH masses derived from our new formalisms show subtle but important differences compared to some of the mass estimators currently used in the literature.
Funding OrganizationChinese NSF [NSF-10533050, NSF-10703006] ; National Basic Research Program of China (973 Program) [2009CB824800] ; CAS Knowledge Innovation Program [KJCX2-YW-T05] ; Carnegie Institution for Science. Funding ; Alfred P. Sloan Foundation ; National Science Foundation ; U.S. Department of Energy ; National Aeronautics and Space Administration ; Japanese Monbukagakusho ; Max Planck Society ; Higher Education Funding Council for England
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0004-637X
URL查看原文
Archive Date2010-01-25
WOS IDWOS:000272465400040
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordDIGITAL SKY SURVEY ; RADIUS-LUMINOSITY RELATIONSHIP ; HOST-GALAXY STARLIGHT ; HIGH-REDSHIFT QUASARS ; VELOCITY DISPERSION ; EDDINGTON RATIO ; SEYFERT-1 GALAXIES ; RADIATION PRESSURE ; INTRINSIC SCATTER ; ASTRONOMICAL DATA
Citation statistics
Cited Times:129[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/4970
Collection高能天体物理研究组
Corresponding AuthorWang, JG (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Yunnan, Peoples R China.
Affiliation1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, P.O. Box 110, Kunming, Yunnan 650011, China
2.Key Laboratory for Research in Galaxies and Cosmology, The University of Sciences and Technology of China, Chinese Academy of Sciences, Hefei, Anhui 230026, China
3.Department of Physics, Yunnan University, Kunming, Yunnan 650031, China
4.Graduate School of the Chinese Academy of Sciences, 19A Yuquan Road, P.O. Box 3908, Beijing 100039, China
5.Center for Astrophysics, University of Science and Technology of China, Hefei, Anhui 230026, China
6.The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Wang JG,Dong, XB,Wang, TG,et al. ESTIMATING BLACK HOLE MASSES IN ACTIVE GALACTIC NUCLEI USING THE Mg II lambda 2800 EMISSION LINE[J]. ASTROPHYSICAL JOURNAL,2009,707(2):1334-1346.
APA Wang JG.,Dong, XB.,Wang, TG.,Ho, LC.,Yuan WM.,...&Wang, JG .(2009).ESTIMATING BLACK HOLE MASSES IN ACTIVE GALACTIC NUCLEI USING THE Mg II lambda 2800 EMISSION LINE.ASTROPHYSICAL JOURNAL,707(2),1334-1346.
MLA Wang JG,et al."ESTIMATING BLACK HOLE MASSES IN ACTIVE GALACTIC NUCLEI USING THE Mg II lambda 2800 EMISSION LINE".ASTROPHYSICAL JOURNAL 707.2(2009):1334-1346.
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