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Mass and redshift dependence of dark halo structure
文献类型：期刊论文
| 作者 | Zhao, DH; Jing, YP; Mo, HJ; Borner, G |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2003-11-01 |
| 卷号 | 597期号:1页码:9-12 |
| 关键词 | cosmology : miscellaneous galaxies : clusters : general methods : numerical |
| 英文摘要 | Using a combination of N-body simulations with different resolutions, we study in detail how the concentrations of cold dark matter halos depend on halo mass at different redshifts. We confirm that halo concentrations at the present time depend strongly on halo mass, but our results also show marked differences from the predictions of some early empirical models. Our main results are that the mass dependence of the concentrations becomes weaker at higher redshifts and that at z greater than or similar to 3, halos of mass greater than 10(11) h(-1) M-circle dot all have a similar median concentration, c similar to 3.5. While the median concentrations of low-mass halos grow significantly with time, those of massive halos change very little with redshift. These results are quantitatively in good agreement with the empirical model proposed by Zhao et al., which shows that halos in the early fast accretion phase all have similar concentrations. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | MATTER HALOS ; DENSITY PROFILE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000186171700003 |
| 公开日期 | 2010-11-08 |
| 源URL | [http://119.78.226.72//handle/331011/11801]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | 1.Shanghai Astron Observ, MPI Astrophys, Partner Grp, Shanghai 200030, Peoples R China 2.Max Planck Inst Astrophys, D-85748 Garching, Germany 3.Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA |
| 推荐引用方式 GB/T 7714 | Zhao, DH,Jing, YP,Mo, HJ,et al. Mass and redshift dependence of dark halo structure[J]. ASTROPHYSICAL JOURNAL,2003,597(1):9-12. |
| APA | Zhao, DH,Jing, YP,Mo, HJ,&Borner, G.(2003).Mass and redshift dependence of dark halo structure.ASTROPHYSICAL JOURNAL,597(1),9-12. |
| MLA | Zhao, DH,et al."Mass and redshift dependence of dark halo structure".ASTROPHYSICAL JOURNAL 597.1(2003):9-12. |
入库方式： OAI收割
来源：上海天文台
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