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A Ringed Dwarf LINER 1 Galaxy Hosting an Intermediate-mass Black Hole with Large-scale Rotation-like H alpha Emission
Liu WJ(刘文娟)1,2,3; Qian, Lei3,4; Dong XB(董小波)1,2,3; Jiang, Ning5; Lira, Paulina6; Cai, Zheng7; Wang, Feige8; Yang, Jinyi8; Xiao, Ting9; Kim, Minjin10,11; Liu, Wen-Juan(Chinese Acad Sci, Yunnan Observ, Kunming 650011, Yunnan, Peoples R China)
发表期刊ASTROPHYSICAL JOURNAL
2017-03-10
卷号837期号:2
DOI10.3847/1538-4357/aa5eb6
产权排序第1完成单位
收录类别SCI
关键词Galaxies: Active Galaxies: Dwarf Galaxies: Individual (Sdss j083803.68+540642.0) Galaxies: Nuclei Galaxies: Seyfert
摘要We report the discovery of a 20 kpc sized H alpha emission in SDSS J083803.68+540642.0, a ringed dwarf galaxy (M-V = -17.89 mag) hosting an accreting intermediate-mass black hole at z = 0.02957. Analysis of the Hubble Space Telescope images indicates that it is an early-type galaxy with a featureless low-surface brightness disk (mu(0) = 20.39 mag arcsec(-2) in the V band) and a prominent, relatively red bulge (V - I = 2.03, R-e = 0.28 kpc or 0 48) that accounts for approximate to 81% of the total light in the I band. A circumgalactic ring of a diameter 16 kpc is also detected, with a disperse shape on its south side. The optical emission lines reveal the nucleus to be a broad-line LINER. Our MMT longslit observation indicates that the kinematics of the extended H alpha emission is consistent with a rotational gaseous disk, with a mean blueshifted velocity of 162 km s(-1) and mean redshifted velocity of 86 km s(-1). According to our photoionization calculations, the large-scale H alpha emission is unlikely to be powered by the central nucleus or by hot evolved (post-AGB) stars interspersed in the old stellar populations, but by in situ star formation; this is vindicated by the line-ratio diagnostic of the extended emission. We propose that both the ring and large-scale H alpha-emitting gas are created by the tidal accretion in a collision-and then merger-with a gas-rich galaxy of a comparable mass.
项目资助者National Basic Research Program of China (973 program)(2015CB857101) ; International Partnership Program of Chinese Academy of Sciences(114A11KYSB20160008) ; Natural Science Foundation of China grants (NSFC)(11473062, 11603036, 11603021) ; Key Laboratory for the Structure and Evolution of Celestial Objects of Chinese Academy of Sciences(OP201408) ; CAS Interdisciplinary Innovation Team ; FAST Fellowship ; Special Funding for Advanced Users, budgeted ; Fondecyt Project(1161184) ; Strategic Priority Research Program "The Emergence of Cosmological Structures"(XDB09000000) ; National Astronomical Observatories, Chinese Academy of Sciences ; Special Fund for Astronomy from the Ministry of Finance
语种英语
学科领域天文学
文章类型Article
ISSN0004-637X
URL查看原文
WOS记录号WOS:000401172400007
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]ACTIVE GALACTIC NUCLEI ; DIGITAL SKY SURVEY ; NEARBY GALAXIES ; STAR-FORMATION ; X-RAY ; TINY TITANS ; 1ST SURVEY ; OLD STARS ; EVOLUTION ; AGN
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被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/10071
专题自由探索组
中国科学院天体结构与演化重点实验室
通讯作者Liu, Wen-Juan(Chinese Acad Sci, Yunnan Observ, Kunming 650011, Yunnan, Peoples R China)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming, Yunnan 650011, China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming, Yunnan, 650011, China
3.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, P. R. China
4.National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100012, China
5.Department of Astronomy, University of Science and Technology of China, Hefei, Anhui 230026, China
6.UCO/Lick Observatory, University of California, 1156 High Street, Santa Cruz, CA 95064, USA
7.UCO/Lick Observatory, University of California, 1156 High Street, Santa Cruz, CA 95064, USA
8.Department of Astronomy, School of Physics, Peking University, Beijing 100871, China
9.Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030, China
10.Korea Astronomy and Space Science Institute, Daejeon 305-348, Korea
11.University of Science and Technology, Daejeon 305-350, Korea
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Liu WJ,Qian, Lei,Dong XB,et al. A Ringed Dwarf LINER 1 Galaxy Hosting an Intermediate-mass Black Hole with Large-scale Rotation-like H alpha Emission[J]. ASTROPHYSICAL JOURNAL,2017,837(2).
APA Liu WJ.,Qian, Lei.,Dong XB.,Jiang, Ning.,Lira, Paulina.,...&Liu, Wen-Juan.(2017).A Ringed Dwarf LINER 1 Galaxy Hosting an Intermediate-mass Black Hole with Large-scale Rotation-like H alpha Emission.ASTROPHYSICAL JOURNAL,837(2).
MLA Liu WJ,et al."A Ringed Dwarf LINER 1 Galaxy Hosting an Intermediate-mass Black Hole with Large-scale Rotation-like H alpha Emission".ASTROPHYSICAL JOURNAL 837.2(2017).
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