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Black hole accretion and star formation as drivers of gas excitation and chemistry in Markarian 231
文献类型：期刊论文
| 作者 | van der Werf, P. P.1; Isaak, K. G.2,3; Meijerink, R.1; Spaans, M.4; Rykala, A.2; Fulton, T.5; Loenen, A. F.1; Walter, F.6; Weiss, A.7; Armus, L.8 |
| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2010-07-01 |
| 卷号 | 518页码:L42 |
| 关键词 | galaxies: individual: Mrk 231 galaxies: active galaxies: ISM galaxies: nuclei galaxies: starburst infrared: galaxies |
| ISSN号 | 0004-6361 |
| 英文摘要 | We present a full high resolution SPIRE FTS spectrum of the nearby ultraluminous infrared galaxy Mrk 231. In total 25 lines are detected, including CO J = 5-4 through J = 13-12, 7 rotational lines of H(2)O, 3 of OH(+) and one line each of H(2)O(+), CH(+), and HF. We find that the excitation of the CO rotational levels up to J = 8 can be accounted for by UV radiation from star formation. However, the approximately flat luminosity distribution of the CO lines over the rotational ladder above J = 8 requires the presence of a separate source of excitation for the highest CO lines. We explore X-ray heating by the accreting supermassive black hole in Mrk 231 as a source of excitation for these lines, and find that it can reproduce the observed luminosities. We also consider a model with dense gas in a strong UV radiation field to produce the highest CO lines, but find that this model strongly overpredicts the hot dust mass in Mrk 231. Our favoured model consists of a star forming disk of radius 560 pc, containing clumps of dense gas exposed to strong UV radiation, dominating the emission of CO lines up to J = 8. X-rays from the accreting supermassive black hole in Mrk 231 dominate the excitation and chemistry of the inner disk out to a radius of 160 pc, consistent with the X-ray power of the AGN in Mrk 231. The extraordinary luminosity of the OH(+) and H(2)O(+) lines reveals the signature of X-ray driven excitation and chemistry in this region. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | GALAXY NUCLEI ; DENSE GAS ; DIAGNOSTICS ; EMISSION ; LINES ; CO |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000281527200043 |
| 公开日期 | 2011-11-23 |
| 源URL | [http://159.226.72.40/handle/332002/1125]  |
| 专题 | 紫金山天文台_星系中的恒星形成研究团组 |
| 作者单位 | 1.Leiden Univ, Leiden Observ, NL-2300 RA Leiden, Netherlands 2.Cardiff Univ, Sch Phys & Astron, Cardiff CF24 3AA, S Glam, Wales 3.Estec, ESA Astrophys Missions Div, NL-2200 AG Noordwijk, Netherlands 4.Univ Groningen, Kapteyn Astron Inst, NL-9700 AV Groningen, Netherlands 5.Blue Sky Spect, Lethbridge, AB, Canada 6.Max Planck Inst Astron, D-69117 Heidelberg, Germany 7.Max Planck Inst Radioastron, D-53121 Bonn, Germany 8.CALTECH, Spitzer Sci Ctr, Pasadena, CA 91125 USA 9.USN, Res Lab, Remote Sensing Div, Washington, DC 20375 USA 10.Univ Maryland, Dept Astron, College Pk, MD 20742 USA |
| 推荐引用方式 GB/T 7714 | van der Werf, P. P.,Isaak, K. G.,Meijerink, R.,et al. Black hole accretion and star formation as drivers of gas excitation and chemistry in Markarian 231[J]. ASTRONOMY & ASTROPHYSICS,2010,518:L42. |
| APA | van der Werf, P. P..,Isaak, K. G..,Meijerink, R..,Spaans, M..,Rykala, A..,...&Xilouris, E. M..(2010).Black hole accretion and star formation as drivers of gas excitation and chemistry in Markarian 231.ASTRONOMY & ASTROPHYSICS,518,L42. |
| MLA | van der Werf, P. P.,et al."Black hole accretion and star formation as drivers of gas excitation and chemistry in Markarian 231".ASTRONOMY & ASTROPHYSICS 518(2010):L42. |
入库方式： OAI收割
来源：紫金山天文台
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