The nature of obscuration in AGN - I. Insights from host galaxies
文献类型：期刊论文
| 作者 | Shao, Li1; Kauffmann, Guinevere1; Li, Cheng2,3; Wang, Jing1; Heckman, Timothy M.4 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2013-12-01 |
| 卷号 | 436期号:4页码:3451-3463 |
| 关键词 | galaxies: active galaxies: nuclei infrared: galaxies |
| 英文摘要 | We analyse a sample of 30 000 nearby obscured active galactic nuclei (AGNs) with optical spectra from Sloan Digital Sky Survey (SDSS) and mid-IR photometry from Wide-field Infrared Survey Explorer. Our aim is to investigate the AGN host galaxy properties with mid-IR luminosities as AGN activity indicator, and to compare with previous studies based on [O iii] emission lines. First we find that the [3.4]-[4.6] colour has weak dependence on host stellar age, but strong dependence on AGN activity. We then use a 'pair-matching' technique to subtract the host 4.6 mu m contribution. By combining Seyferts with a sample of SDSS quasars at z < 0.7, we show that the [O iii] and the intrinsic AGN 4.6 mu m luminosities correlate roughly linearly over 4 orders of magnitude, but with substantial scatter. We also compare the partition functions of the total integrated 4.6 mu m and [O iii] line luminosities from Seyferts and a sub-population of low ionization nuclear emission-line regions (LINERs) with significant nuclear 4.6 mu m emission, as a function of a variety of host galaxy properties, finding that they are identical. We conclude, therefore, that [O iii] as an AGN indicator shows no particular biases as compared to the 4.6 mu m luminosity. Our results also demonstrate that some LINERs do fit in with the expectations of the simple Unified 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 ; DIGITAL SKY SURVEY ; BLACK-HOLE MASS ; DEEP FIELD-SOUTH ; HARD X-RAY ; SPECTRAL ENERGY-DISTRIBUTIONS ; LOW-REDSHIFT GALAXIES ; STAR-FORMATION ; MU-M ; SEYFERT-GALAXIES |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000327798100044 |
| 公开日期 | 2014-09-22 |
| 源URL | [http://119.78.226.72//handle/331011/15211]  |
| 专题 | 上海天文台_空间导航与定位技术重点实验室 |
| 作者单位 | 1.Max Planck Inst Astrophys, D-85748 Garching, Germany 2.Shanghai Astron Observ, Max Planck Inst Astrophys, Partner Grp, Shanghai 200030, Peoples R China 3.Chinese Acad Sci, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China 4.Johns Hopkins Univ, Ctr Astrophys Sci, Dept Phys & Astron, Baltimore, MD 21218 USA |
| 推荐引用方式 GB/T 7714 | Shao, Li,Kauffmann, Guinevere,Li, Cheng,et al. The nature of obscuration in AGN - I. Insights from host galaxies[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2013,436(4):3451-3463. |
| APA | Shao, Li,Kauffmann, Guinevere,Li, Cheng,Wang, Jing,&Heckman, Timothy M..(2013).The nature of obscuration in AGN - I. Insights from host galaxies.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,436(4),3451-3463. |
| MLA | Shao, Li,et al."The nature of obscuration in AGN - I. Insights from host galaxies".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 436.4(2013):3451-3463. |
入库方式： OAI收割
来源：上海天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。