热门
The clustering of narrow-line AGN in the local Universe
文献类型：期刊论文
| 作者 | Li, Cheng; Kauffmann, Guinevere; Wang, Lan; White, Simon D. M.; Heckman, Timothy M.; Jing, Y. P. |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2006-12-01 |
| 卷号 | 373期号:2页码:457-468 |
| 关键词 | galaxies : active galaxies : distances and redshifts cosmology : theory dark matter large-scale structure of Universe |
| 英文摘要 | We have analysed the clustering of similar to 90 000 narrow-line active galactic nuclei (AGN) drawn from the Data Release 4 (DR4) of the Sloan Digital Sky Survey. Our analysis addresses the following questions. (i) How do the locations of galaxies within the large-scale distribution of dark matter influence ongoing accretion on to their central black holes ? (ii) Is AGN activity triggered by interactions or mergers between galaxies ? We compute the cross-correlation between AGN and a reference sample of galaxies drawn from the DR4. We compare this to results for control samples of inactive galaxies matched simultaneously in redshift, stellar mass, concentration, velocity dispersion and mean stellar age, as measured by the 4000-angstrom break strength. We also compare near-neighbour counts around AGN and around the control galaxies. On scales larger than a few Mpc, AGN have almost the same clustering amplitude as the control sample. This demonstrates that AGN host galaxies and inactive control galaxies populate dark matter haloes of similar mass. On scales between 100 kpc and 1 Mpc, AGN are clustered more weakly than the control galaxies. We use mock catalogues constructed from high-resolution N-body simulations to interpret this antibias, showing that the observed effect is easily understood if AGN are preferentially located at the centres of their dark matter haloes. On scales less than 70 kpc, AGN cluster marginally more strongly than the control sample, but the effect is weak. When compared to the control sample, we find that only one in 100 AGN has an extra neighbour within a radius of 70 kpc. This excess increases as a function of the accretion rate on to the black hole, but it does not rise above the few per cent level. Although interactions between galaxies may be responsible for triggering nuclear activity in a minority of nearby AGN, some other mechanism is required to explain the activity seen in the majority of the objects in our sample. |
| 学科主题 | 星系和宇宙学研究中心 |
| 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 ; ACTIVE GALACTIC NUCLEI ; GALAXY REDSHIFT SURVEY ; STAR-FORMING GALAXIES ; HOST GALAXIES ; HIGH-RESOLUTION ; POWER SPECTRUM ; RADIO-SOURCES ; BLACK-HOLES ; MASS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000242113900002 |
| 公开日期 | 2010-11-08 |
| 源URL | [http://119.78.226.72//handle/331011/11849]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | 1.Max Planck Inst Astrophys, D-85748 Garching, Germany 2.Univ Sci & Technol China, Ctr Astrophys, Hefei 230026, Anhui, Peoples R China 3.Shanghai Astron Observ, Partner Grp MPI Astrophys, Shanghai 200030, Peoples R China 4.Peking Univ, Dept Astron, Beijing 100871, Peoples R China 5.Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA |
| 推荐引用方式 GB/T 7714 | Li, Cheng,Kauffmann, Guinevere,Wang, Lan,et al. The clustering of narrow-line AGN in the local Universe[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2006,373(2):457-468. |
| APA | Li, Cheng,Kauffmann, Guinevere,Wang, Lan,White, Simon D. M.,Heckman, Timothy M.,&Jing, Y. P..(2006).The clustering of narrow-line AGN in the local Universe.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,373(2),457-468. |
| MLA | Li, Cheng,et al."The clustering of narrow-line AGN in the local Universe".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 373.2(2006):457-468. |
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。