The two-point correlation of galaxy groups: probing the clustering of dark matter haloes
文献类型：期刊论文
| 作者 | Yang, XH; Mo, HJ; van den Bosch, FC; Jing, YP |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2005-02-21 |
| 卷号 | 357期号:2页码:608-618 |
| 关键词 | methods : statistical galaxies : haloes dark matter large-scale structure of Universe |
| 英文摘要 | We analyse the two-point correlation function (2PCF) of galaxy groups identified from the 2-degree Field Galaxy Redshift Survey with the halo-based group finder recently developed by Yang et al. With this group catalogue we are able to estimate the 2PCFs for systems ranging from isolated galaxies to rich clusters of galaxies. The real-space correlation length obtained for these systems ranges from similar to4 to similar to15 h(-1) Mpc, respectively. The observed correlation amplitude (and the corresponding bias factor) as a function of group abundance is well reproduced by associating galaxy groups with dark matter haloes in the standard Lambda-cold dark matter model. Redshift distortions are clearly detected in the redshift-space correlation function, the degree of which is consistent with the assumption of gravitational clustering and halo bias in the cosmic density field. In agreement with previous studies we find a strong increase of the correlation length with the mean intergroup separation. Although well-determined observationally, we show that current theoretical predictions are not yet accurate enough to allow for stringent constraints on cosmological parameters. Finally, we use our results to explore the power-law nature of the 2PCF of galaxies. We split the 2PCF into one-and two-group terms, equivalent to the one- and two-halo terms in halo occupation models, and show that the power-law form of the 2PCF is broken, when only including galaxies in the more massive systems. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | LARGE-SCALE STRUCTURE ; DIGITAL SKY SURVEY ; REDSHIFT SURVEY ; OCCUPATION DISTRIBUTION ; VELOCITY DISPERSION ; ANALYTIC MODEL ; MASS FUNCTION ; UNIVERSE ; CATALOG ; BIAS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000226853700021 |
| 源URL | [http://119.78.226.72/handle/331011/19397]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | 1.Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA 2.ETH Honggerberg, Swiss Fed Inst Technol, Dept Phys, CH-8093 Zurich, Switzerland 3.Shanghai Astron Observ, Partner Grp MPA, Shanghai 200030, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, XH,Mo, HJ,van den Bosch, FC,et al. The two-point correlation of galaxy groups: probing the clustering of dark matter haloes[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2005,357(2):608-618. |
| APA | Yang, XH,Mo, HJ,van den Bosch, FC,&Jing, YP.(2005).The two-point correlation of galaxy groups: probing the clustering of dark matter haloes.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,357(2),608-618. |
| MLA | Yang, XH,et al."The two-point correlation of galaxy groups: probing the clustering of dark matter haloes".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 357.2(2005):608-618. |
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来源：上海天文台
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