On the clustering of faint red galaxies
文献类型：期刊论文
| 作者 | Xu, Haojie2; Zheng, Zheng2; Guo, Hong2,3; Zhu, Ju1; Zehavi, Idit4 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2016-08-21 |
| 卷号 | 460期号:4页码:3647-3659 |
| 关键词 | Galaxies: Distances And Redshifts Galaxies: Haloes Galaxies: Statistics Cosmology: Observations Cosmology: Theory Large-scale Structure Of Universe |
| ISSN号 | 0035-8711 |
| DOI | 10.1093/mnras/stw1259 |
| 英文摘要 | Faint red galaxies in the Sloan Digital Sky Survey show a puzzling clustering pattern in previous measurements. In the two-point correlation function (2PCF), they appear to be strongly clustered on small scales, indicating a tendency to reside in massive haloes as satellite galaxies. However, their weak clustering on large scales suggests that they are more likely to be found in low-mass haloes. The interpretation of the clustering pattern suffers from the large sample variance in the 2PCF measurements, given the small volume of the volume-limited sample of such faint galaxies. We present improved clustering measurements of faint galaxies by making a full use of a flux-limited sample to obtain volume-limited measurements with an increased effective volume. In the improved 2PCF measurements, the fractional uncertainties on large scales drop by more than 40 per cent, and the strong contrast between small-scale and large-scale clustering amplitudes seen in previous work is no longer prominent. From halo occupation distribution modelling of the measurements, we find that a considerable fraction of faint red galaxies to be satellites in massive haloes, a scenario supported by the strong covariance of small-scale 2PCF measurements and the relative spatial distribution of faint red galaxies and luminous galaxies. However, the satellite fraction is found to be degenerate with the slope of the distribution profile of satellites in inner haloes. We compare the modelling results with semi-analytic model predictions and discuss the implications. |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000381711100021 |
| 出版者 | OXFORD UNIV PRESS |
| 源URL | [http://119.78.226.72/handle/331011/32753]  |
| 专题 | 中国科学院上海天文台 |
| 通讯作者 | Xu, Haojie |
| 作者单位 | 1.Univ Illinois, Dept Astron, MC-221,1002 W Green St, Urbana, IL 61801 USA 2.Univ Utah, Dept Phys & Astron, 115 South 1400 East, Salt Lake City, UT 84112 USA 3.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 4.Case Western Reserve Univ, Dept Astron, 10900 Euclid Ave, Cleveland, OH 44106 USA |
| 推荐引用方式 GB/T 7714 | Xu, Haojie,Zheng, Zheng,Guo, Hong,et al. On the clustering of faint red galaxies[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2016,460(4):3647-3659. |
| APA | Xu, Haojie,Zheng, Zheng,Guo, Hong,Zhu, Ju,&Zehavi, Idit.(2016).On the clustering of faint red galaxies.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,460(4),3647-3659. |
| MLA | Xu, Haojie,et al."On the clustering of faint red galaxies".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 460.4(2016):3647-3659. |
入库方式： OAI收割
来源：上海天文台
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