A Ringed Dwarf LINER 1 Galaxy Hosting an Intermediate-mass Black Hole with Large-scale Rotation-like H alpha Emission
文献类型：期刊论文
| 作者 | Liu, Wen-Juan2,3,4; Qian, Lei4,5; Dong, Xiao-Bo2,3,4; Jiang, Ning6; Lira, Paulina7; Cai, Zheng8; Wang, Feige9; Yang, Jinyi9; Xiao, Ting10; Kim, Minjin1,11 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2017-03-10 |
| 卷号 | 837期号:2 |
| 关键词 | Galaxies: Active Galaxies: Dwarf Galaxies: Individual (Sdss j083803.68+540642.0) Galaxies: Nuclei Galaxies: Seyfert |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/aa5eb6 |
| 英文摘要 | 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. |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000401172400007 |
| 出版者 | IOP PUBLISHING LTD |
| 源URL | [http://119.78.226.72/handle/331011/32623]  |
| 专题 | 中国科学院上海天文台 |
| 通讯作者 | Liu, Wen-Juan |
| 作者单位 | 1.Univ Sci & Technol, Daejeon 305350, South Korea 2.Chinese Acad Sci, Yunnan Observ, Kunming 650011, Yunnan, Peoples R China 3.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650011, Yunnan, Peoples R China 4.Chinese Acad Sci, Ctr Astron Mega Sci, 20A Datun Rd, Beijing 100012, Peoples R China 5.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 6.Univ Sci & Technol China, Dept Astron, Hefei 230026, Anhui, Peoples R China 7.Univ Chile, Dept Astron, Casilla 36-D, Santiago, Chile 8.Univ Calif Santa Cruz, Univ Calif Observ, Lick Observ, 1156 High St, Santa Cruz, CA 95064 USA 9.Peking Univ, Sch Phys, Dept Astron, Beijing 100871, Peoples R China 10.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, 80 Nandan Rd, Shanghai 200030, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Wen-Juan,Qian, Lei,Dong, Xiao-Bo,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, Wen-Juan.,Qian, Lei.,Dong, Xiao-Bo.,Jiang, Ning.,Lira, Paulina.,...&Kim, Minjin.(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, Wen-Juan,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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来源：上海天文台
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