Are Seyfert 2 galaxies without polarized broad emission lines more obscured?
文献类型：期刊论文
| 作者 | Shu, Xin-Wen1; Wang, Jun-Xian; Jiang, Peng |
| 刊名 | CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
 |
| 出版日期 | 2008-04-01 |
| 卷号 | 8期号:2页码:204-210 |
| 关键词 | galaxies : active galaxies : individual (NGC 513 galaxies : Seyfert X-rays : galaxies polarization NGC 1144 NGC 6890 NGC 7682 MCG-3-58-7m F02581-1136 UGC 6100) |
| 英文摘要 | New XMM-Newton data of seven Seyfert 2 galaxies with optical spectropolarimetric observations are presented. An analysis of the 0.5 - 10 keV spectra shows that four Seyfert 2 galaxies with polarized broad lines (PBLs) are absorbed by N-H < 10(24) cm(-2), while two of three Seyfert 2 galaxies without PBLs show evidence of Compton-thick obscuration, supporting the conclusion that Seyfert 2 galaxies without PBLs are more obscured than those with PBLs. Adding the measured obscuration indicators (N-H, T ratio, and Fe K alpha line EW) of six luminous AGNs to our previous sample improves the significance level of the difference in absorption from 92.3% to 96.3% for N-H, 99.1% to 99.4% for T ratio, and 95.3% to 97.4% for Fe K alpha line EW. The present results support and enhance the suggestions that the absence of PBLs in Seyfert 2 galaxies can be explained by larger viewing angles of the line of sight to the putative dusty torus, which leads to the obscuration of the broad-line scattering screen, as expected in the unification model. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | ACTIVE GALACTIC NUCLEI ; PHOTON IMAGING CAMERA ; BLACK-HOLE MASS ; X-RAY ; UNIFIED MODEL ; XMM-NEWTON ; GASEOUS KINEMATICS ; SPECTROPOLARIMETRY ; OBSCURATION ; SCATTERING |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000255262600007 |
| 源URL | [http://119.78.226.72/handle/331011/19521]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | 1.Univ Sci & Technol China, Ctr Astrophys, Hefei 230026, Peoples R China 2.Univ Sci & Technol China, Joint Inst Galaxy & Cosmol, Hefei 230026, Peoples R China 3.Chinese Acad Sci, Shanghai Astron Observ, Hefei 230026, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shu, Xin-Wen,Wang, Jun-Xian,Jiang, Peng. Are Seyfert 2 galaxies without polarized broad emission lines more obscured?[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2008,8(2):204-210. |
| APA | Shu, Xin-Wen,Wang, Jun-Xian,&Jiang, Peng.(2008).Are Seyfert 2 galaxies without polarized broad emission lines more obscured?.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,8(2),204-210. |
| MLA | Shu, Xin-Wen,et al."Are Seyfert 2 galaxies without polarized broad emission lines more obscured?".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 8.2(2008):204-210. |
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来源：上海天文台
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