A note on black hole masses estimated by the second moment in narrow-line Seyfert 1 Galaxies

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	A note on black hole masses estimated by the second moment in narrow-line Seyfert 1 Galaxies
	Bian WH(卞维豪); Hu C(胡晨); Wang JM(王建民); Bian, WH; Hu, C; Gu, QS; Wang, JM
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2008
卷号	390 期号:2 页码:752-758
关键词	black hole physics galaxies: active galaxies: nuclei
通讯作者	[Bian, Wei-Hao] Nanjing Normal Univ, Dept Phys, Nanjing 210097, Peoples R China ; [Bian, Wei-Hao] Nanjing Normal Univ, Inst Theoret Phys, Nanjing 210097, Peoples R China ; [Bian, Wei-Hao ; Hu, Chen ; Wang, Jian-Min] Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100039, Peoples R China ; [Gu, Qiu-Sheng] Nanjing Univ, Dept Astron, Nanjing 210093, Peoples R China ; [Wang, Jian-Min] Chinese Acad Sci, Theoret Phys Ctr Sci Facil, Beijing 100864, Peoples R China
英文摘要	The second moment of the H beta emission line is calculated for 329 narrow-line Seyfert 1 galaxies (NLS1s) selected from the Sloan Digital Sky Survey (SDSS), which is used to calculate the central supermassive black hole (SMBH) mass of each. We find that the second moment depends strongly on the broader component of the H beta line profile. We find that for the NLS1s requiring two Gaussians to fit the H beta line, the mean value of the SMBH mass from the H beta second moment is larger by about 0.50 dex than that from the full width at half-maximum. Using the gas velocity dispersion of the core/narrow component of [O III]lambda 5007 to estimate the stellar velocity dispersion sigma, the new mass makes NLS1s fall very close to the M(BH)-sigma relation for normal active galactic nuclei. By using sigma* measured directly from SDSS spectra with a simple stellar population synthesis method, we find that for NLS1s with mass lower than 10(7) M(circle dot), they fall only marginally below the M(BH)-sigma* relation considering the large scatter in the mass calculation.
学科主题	Astronomy & Astrophysics
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
原文出处	SCI
语种	英语
WOS记录号	WOS:000259870600024
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/238425]
专题	高能物理研究所_粒子天体物理中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Bian WH,Hu C,Wang JM,et al. A note on black hole masses estimated by the second moment in narrow-line Seyfert 1 Galaxies[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2008,390(2):752-758.
APA	卞维豪.,胡晨.,王建民.,Bian, WH.,Hu, C.,...&Wang, JM.(2008).A note on black hole masses estimated by the second moment in narrow-line Seyfert 1 Galaxies.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,390(2),752-758.
MLA	卞维豪,et al."A note on black hole masses estimated by the second moment in narrow-line Seyfert 1 Galaxies".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 390.2(2008):752-758.