X-RAY ABSORPTION AND OPTICAL EXTINCTION IN THE PARTIALLY OBSCURED SEYFERT NUCLEUS IN MRK 1393
文献类型：期刊论文
| 作者 | Wang, TG1,2; Zhou, HY1,3; Grupe, D4; Yuan WM(袁为民)5 ; Dong, XB1,2; Lu, HL1,2
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| 刊名 | ASTRONOMICAL JOURNAL
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| 出版日期 | 2009-04 |
| 卷号 | 137期号:4页码:4002-4010 |
| 关键词 | galaxies: Seyfert quasars: emission lines quasars: individual (Mrk 1393) X-rays: galaxies |
| ISSN号 | 0004-6256 |
| 产权排序 | 第五完成单位 |
| 通讯作者 | Wang, TG (reprint author), Univ Sci & Technol China, Ctr Astrophys, Hefei 230026, Anhui, Peoples R China. |
| 英文摘要 | We present a detailed study of the X-ray and optical spectra of the luminous Seyfert galaxy Mrk 1393, which revealed variable partial obscuration of the active nucleus. The X-ray spectra obtained by XMM-Newton and Swift show moderate absorption with a column density around 3 x 10(21) cm(-2), consistent with a dust-reddening interpretation of the steep Balmer decrement seen in recent optical spectra. The X-ray flux in the 0.5-2 keV band during the XMM-Newton observation in 2005, and Swift observation in 2006 was a factor of 6 brighter than that of the ROSAT All Sky Survey in 1991. In the past four years, the broad-H alpha line brightened by a factor of 4 accompanied by a decrease in the Balmer decrement. A comparison with literature spectra reveals variations in the dust extinction on timescales of several years, suggesting that the obscuring material are very close to the active nucleus. These observations indicate that a dust-to-gas ratio as high as the Galactic value can be present in moderately thick gas in the vicinity of the central engine within a few parsecs. We suggest that the obscuring material may be debris disrupted from the dusty torus. |
| 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] | ACTIVE GALACTIC NUCLEI ; DIGITAL SKY SURVEY ; XMM-NEWTON OBSERVATIONS ; PHOTON IMAGING CAMERA ; ROSAT ALL-SKY ; DATA RELEASE ; IRAS 17020+4544 ; LINE REGION ; FLUX STATE ; NGC 4051 |
| 收录类别 | SCI |
| 原文出处 | http://iopscience.iop.org/1538-3881/137/4/4002/ |
| 语种 | 英语 |
| WOS记录号 | WOS:000264046100026 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/4984]  |
| 专题 | 云南天文台_高能天体物理研究组 |
| 作者单位 | 1.Center for Astrophysics, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China 2.CAS Key Laboratory for Research in galaxies and Cosmology, University of Science and Technology of China, Hefei, Anhui, 230026, China 3.Max-Planck-Institut für extraterrestrische Physik, Postfach 1312, 85741 Garching, Germany 4.Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Lab, University Park, PA 16802, USA 5.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming, Yunnan 650011, China |
| 推荐引用方式 GB/T 7714 | Wang, TG,Zhou, HY,Grupe, D,et al. X-RAY ABSORPTION AND OPTICAL EXTINCTION IN THE PARTIALLY OBSCURED SEYFERT NUCLEUS IN MRK 1393[J]. ASTRONOMICAL JOURNAL,2009,137(4):4002-4010. |
| APA | Wang, TG,Zhou, HY,Grupe, D,Yuan WM,Dong, XB,&Lu, HL.(2009).X-RAY ABSORPTION AND OPTICAL EXTINCTION IN THE PARTIALLY OBSCURED SEYFERT NUCLEUS IN MRK 1393.ASTRONOMICAL JOURNAL,137(4),4002-4010. |
| MLA | Wang, TG,et al."X-RAY ABSORPTION AND OPTICAL EXTINCTION IN THE PARTIALLY OBSCURED SEYFERT NUCLEUS IN MRK 1393".ASTRONOMICAL JOURNAL 137.4(2009):4002-4010. |
入库方式： OAI收割
来源：云南天文台
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