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UM 625 REVISITED: MULTIWAVELENGTH STUDY OF A SEYFERT 1 GALAXY WITH A LOW-MASS BLACK HOLE
Jiang, N1,2; Ho, LC2; Dong XB(董小波)1,3,4; Yang, H1; Wang, JX1; Jiang, N (reprint author), Chinese Acad Sci, Univ Sci & Technol China, Dept Astron, Key Lab Res Galaxies & Cosmol, Hefei 230026, Anhui, Peoples R China.
发表期刊ASTROPHYSICAL JOURNAL
2013-06-10
卷号770期号:1
DOI10.1088/0004-637X/770/1/3
产权排序第1完成单位
收录类别SCI
关键词Galaxies: Active Galaxies: Individual (Um 625) Galaxies: Nuclei Galaxies: Seyfert X-rays: Galaxies
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.
项目资助者Carnegie Institution for Science ; NASA through STScI ; China Scholarship Council, Chinese NSF [NSF-11033007, NSF-11133006, NSF-11073019] ; National 973 Project of China [2009CB824800] ; Fundamental Research Funds for the Central Universities [USTC WK2030220004] ; NSFC [11233002] ; Alfred P. Sloan Foundation ; Participating Institutions ; National Science Foundation ; U.S. Department of Energy ; National Aeronautics and Space Administration ; Japanese Monbukagakusho ; Max Planck Society ; Higher Education Funding Council for England
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-637X
URL查看原文
WOS记录号WOS:000319986400003
WOS研究方向Astronomy & Astrophysics
WOS类目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
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/5428
专题丽江天文观测站(南方基地)
中国科学院天体结构与演化重点实验室
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.
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
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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,&Jiang, N .(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).
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