THE ORIENTATION OF THE NUCLEAR OBSCURER OF THE ACTIVE GALACTIC NUCLEI
文献类型：期刊论文
| 作者 | Shen, Shiyin1,2 ; Shao, Zhengyi1,2; Gu, Minfeng1,3
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| 刊名 | ASTROPHYSICAL JOURNAL LETTERS
 |
| 出版日期 | 2010-12-20 |
| 卷号 | 725期号:2页码:L210-L213 |
| 关键词 | galaxies: nuclei galaxies: Seyfert galaxies: spiral galaxies: statistics |
| 英文摘要 | We examine the distribution of axis ratios of a large sample of disk galaxies hosting type 2 active galactic nuclei (AGNs) selected from the Sloan Digital Sky Survey and compare it with a well-defined control sample of non-active galaxies. We find them significantly different, where the type 2 AGNs show both an excess of edge-on objects and deficit of round objects. This systematical bias cannot be explained by a nuclear obscurer oriented randomly with respect to the stellar disk. However, a nuclear obscurer coplanar with the stellar disk also does not fit the data very well. By assuming that the nuclear obscurer having an opening angle of similar to 60 degrees, we find that the observed axis ratio distribution can be nicely reproduced by a mean tilt angle of similar to 30 degrees between the nuclear obscurer and the stellar disk. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | DIGITAL SKY SURVEY ; SEYFERT-GALAXIES ; NEARBY GALAXIES ; SPIRAL GALAXIES ; HOST GALAXIES ; DATA RELEASE ; LUMINOSITY ; OBSCURATION ; FRACTION ; SHAPES |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000285051400021 |
| 公开日期 | 2015-02-02 |
| 源URL | [http://119.78.226.72//handle/331011/15504]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China 2.Key Lab Astrophys, Shanghai 200234, Peoples R China 3.Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA |
| 推荐引用方式 GB/T 7714 | Shen, Shiyin,Shao, Zhengyi,Gu, Minfeng. THE ORIENTATION OF THE NUCLEAR OBSCURER OF THE ACTIVE GALACTIC NUCLEI[J]. ASTROPHYSICAL JOURNAL LETTERS,2010,725(2):L210-L213. |
| APA | Shen, Shiyin,Shao, Zhengyi,&Gu, Minfeng.(2010).THE ORIENTATION OF THE NUCLEAR OBSCURER OF THE ACTIVE GALACTIC NUCLEI.ASTROPHYSICAL JOURNAL LETTERS,725(2),L210-L213. |
| MLA | Shen, Shiyin,et al."THE ORIENTATION OF THE NUCLEAR OBSCURER OF THE ACTIVE GALACTIC NUCLEI".ASTROPHYSICAL JOURNAL LETTERS 725.2(2010):L210-L213. |
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来源：上海天文台
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