IC 630: Piercing the Veil of the Nuclear Gas
文献类型：期刊论文
| 作者 | Durre, Mark; Mould, Jeremy; Schartmann, Marc; Uddin, Syed Ashraf; Cotter, Garrett |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2017 |
| 卷号 | 838期号:2页码:102- |
| 英文摘要 | IC 630 is a nearby early-type galaxy with a mass of 6 x 10(10) M-circle dot with an intense burst of recent (6Myr) star formation (SF). It shows strong nebular emission lines, with radio and X-ray emission, which classifies it as an active galactic nucleus (AGN). With VLT-SINFONI and Gemini North-NIFS adaptive optics observations (plus supplementary ANU 2.3m WiFeS optical IFU observations), the excitation diagnostics of the nebular emission species show no sign of standard AGN engine excitation; the stellar velocity dispersion also indicates that a supermassive black hole (if one is present) is small (M. = 2.25 x 10(5)M(circle dot)). The luminosity at all wavelengths is consistent with SF at a rate of about 1-2M(circle dot) yr(-1). We measure gas outflows driven by SF at a rate of 0.18M(circle dot) yr(-1) in a face-on truncated cone geometry. We also observe a nuclear cluster or disk and other clusters. Photoionization from young, hot stars is the main excitation mechanism for [Fe II] and hydrogen, whereas shocks are responsible for the H-2 excitation. Our observations are broadly comparable with simulations where a Toomre-unstable, self-gravitating gas disk triggers a burst of SF, peaking after about 30 Myr and possibly cycling with a period of about 200 Myr. |
| 语种 | 英语 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/17419]  |
| 专题 | 中国科学院紫金山天文台 |
| 推荐引用方式 GB/T 7714 | Durre, Mark,Mould, Jeremy,Schartmann, Marc,et al. IC 630: Piercing the Veil of the Nuclear Gas[J]. ASTROPHYSICAL JOURNAL,2017,838(2):102-. |
| APA | Durre, Mark,Mould, Jeremy,Schartmann, Marc,Uddin, Syed Ashraf,&Cotter, Garrett.(2017).IC 630: Piercing the Veil of the Nuclear Gas.ASTROPHYSICAL JOURNAL,838(2),102-. |
| MLA | Durre, Mark,et al."IC 630: Piercing the Veil of the Nuclear Gas".ASTROPHYSICAL JOURNAL 838.2(2017):102-. |
入库方式： OAI收割
来源：紫金山天文台
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