UM 625 REVISITED: MULTIWAVELENGTH STUDY OF A SEYFERT 1 GALAXY WITH A LOW-MASS BLACK HOLE

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	UM 625 REVISITED: MULTIWAVELENGTH STUDY OF A SEYFERT 1 GALAXY WITH A LOW-MASS BLACK HOLE
	Jiang, N 1,2; Ho, LC 2; Dong XB(董小波)1,3,4 ; Yang, H1 ; Wang, JX1
刊名	ASTROPHYSICAL JOURNAL
	2013-06-10
卷号	770 期号:1
关键词	galaxies: active galaxies: individual (UM 625) galaxies: nuclei galaxies: Seyfert X-rays: galaxies
ISSN号	0004-637X
通讯作者	Jiang, N (reprint author), Chinese Acad Sci, Univ Sci & Technol China, Dept Astron, Key Lab Res Galaxies & Cosmol, Hefei 230026, Anhui, Peoples R China.
产权排序	第一完成单位
英文摘要	UM 625, previously identified as a narrow-line active galactic nucleus (AGN), actually exhibits broad H alpha and H beta lines whose width and luminosity indicate a low black hole (BH) mass of 1.6 x 10(6) M-circle dot. We present a detailed multiwavelength study of the nuclear and host galaxy properties of UM 625. Analysis of Chandra and XMM-Newton observations suggests that this system contains a heavily absorbed and intrinsically X-ray weak (alpha(ox) = -1.72) nucleus. Although not strong enough to qualify as radio loud, UM 625 does belong to a minority of low-mass AGNs detected in the radio. The broadband spectral energy distribution constrains the bolometric luminosity to L-bol approximate to (0.5-3) x 10(43) erg s(-1) and L-bol/L-Edd approximate to 0.02-0.15. A comprehensive analysis of Sloan Digital Sky Survey and Hubble Space Telescope images shows that UM 625 is a nearly face-on S0 galaxy with a prominent, relatively blue pseudobulge (Sersic index n = 1.60) that accounts for similar to 60% of the total light in the R band. The extended disk is featureless, but the central similar to 150-400 pc contains a conspicuous semi-ring of bright, blue star-forming knots, whose integrated ultraviolet luminosity suggests a star formation rate of similar to 0.3 M-(c) yr(-1). The mass of the central BH roughly agrees with the value predicted from its bulge velocity dispersion but is significantly lower than that expected from its bulge luminosity.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	ACTIVE GALACTIC NUCLEI ; DIGITAL SKY SURVEY ; EMISSION-LINE GALAXIES ; X-RAY-PROPERTIES ; SPECTRAL ENERGY-DISTRIBUTION ; SPACE-TELESCOPE IMAGES ; HOST GALAXIES ; DATA RELEASE ; XMM-NEWTON ; M-BH-SIGMA(ASTERISK) RELATION
收录类别	SCI
原文出处	http://iopscience.iop.org/article/10.1088/0004-637X/770/1/3/meta
语种	英语
WOS记录号	WOS:000319986400003
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/5428]
专题	云南天文台_丽江天文观测站（南方基地）云南天文台_中国科学院天体结构与演化重点实验室
作者单位	1.Key laboratory for Research in Galaxies and Cosmology, Department of Astronomy, The University of Science and Technology of China, Chinese Academy of Sciences, Hefei, Anhui 230026, China 2.The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA 3.Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming, Yunnan 650011, China 4.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming, Yunnan 650011, China
推荐引用方式 GB/T 7714	Jiang, N,Ho, LC,Dong XB,et al. UM 625 REVISITED: MULTIWAVELENGTH STUDY OF A SEYFERT 1 GALAXY WITH A LOW-MASS BLACK HOLE[J]. ASTROPHYSICAL JOURNAL,2013,770(1).
APA	Jiang, N,Ho, LC,Dong XB,Yang, H,&Wang, JX.(2013).UM 625 REVISITED: MULTIWAVELENGTH STUDY OF A SEYFERT 1 GALAXY WITH A LOW-MASS BLACK HOLE.ASTROPHYSICAL JOURNAL,770(1).
MLA	Jiang, N,et al."UM 625 REVISITED: MULTIWAVELENGTH STUDY OF A SEYFERT 1 GALAXY WITH A LOW-MASS BLACK HOLE".ASTROPHYSICAL JOURNAL 770.1(2013).