MAPPING THE REAL-SPACE DISTRIBUTIONS OF GALAXIES IN SDSS DR7. I. TWO-POINT CORRELATION FUNCTIONS
文献类型：期刊论文
| 作者 | Shi, Feng2,3; Yang, Xiaohu4,5; Wang, Huiyuan1; Zhang, Youcai2; Mo, H. J.6,7,8; Van den Bosch, Frank C.9; Li, Shijie2; Liu, Chengze4; Liu, Yi2; Tweed, Dylan4 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2016-12-20 |
| 卷号 | 833期号:2 |
| ISSN号 | 0004-637X |
| 关键词 | Dark Matter Galaxies: Halos Large-scale Structure Of Universe Methods: Statistical |
| DOI | 10.3847/1538-4357/833/2/241 |
| 英文摘要 | Using a method to correct redshift-space distortion (RSD) for individual galaxies, we mapped the real-space distributions of galaxies in the Sloan Digital Sky Survey (SDSS) Data Release 7 (DR7). We use an ensemble of mock catalogs to demonstrate the reliability of our method. Here, in the first paper in a series, we focus mainly on the two-point correlation function (2PCF) of galaxies. Overall the 2PCF measured in the reconstructed real space for galaxies brighter than M-0.1(r)-5logh = -19.0 agrees with the direct measurement to an accuracy better than the measurement error due to cosmic variance, if the reconstruction uses the correct cosmology. Applying the method to the SDSS DR7, we construct a real-space version of the main galaxy catalog, which contains 396,068 galaxies in the North Galactic Cap with redshifts in the range 0.01 <= z <= 0.12. The Sloan Great Wall, the largest known structure in the nearby universe, is not as dominant an overdense structure as it appears to be in redshift space. We measure the 2PCFs in reconstructed real space for galaxies of different luminosities and colors. All of them show clear deviations from single power-law forms, and reveal clear transitions from one-halo to two-halo terms. A comparison with the corresponding 2PCFs in redshift space nicely demonstrates how RSDs boost the clustering power on large scales (by about 40%-50% at scales similar to 10 h(-1) Mpc) and suppress it on small scales (by about 70%-80% on a scale of 0.3 h(-1) Mpc). |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | IOP PUBLISHING LTD |
| WOS记录号 | WOS:000391169600116 |
| 源URL | [http://119.78.226.72/handle/331011/32665]  |
| 专题 | 中国科学院上海天文台 |
| 通讯作者 | Shi, Feng |
| 作者单位 | 1.Univ Sci & Technol China, Key Lab Res Galaxies & Cosmol, Hefei 230026, Anhui, Peoples R China 2.Shanghai Astron Observ, Nandan Rd 80, Shanghai 200030, Peoples R China 3.Univ Chinese Acad Sci, 19 A,Yuquan Rd, Beijing, Peoples R China 4.Shanghai Jiao Tong Univ, Ctr Astron & Astrophys, Shanghai 200240, Peoples R China 5.Shanghai Jiao Tong Univ, IFSA Collaborat Innovat Ctr, Shanghai 200240, Peoples R China 6.Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA 7.Tsinghua Univ, Dept Phys, Beijing 10084, Peoples R China 8.Tsinghua Univ, Ctr Astrophys, Beijing 10084, Peoples R China 9.Yale Univ, Dept Astron, POB 208101, New Haven, CT 06520 USA |
| 推荐引用方式 GB/T 7714 | Shi, Feng,Yang, Xiaohu,Wang, Huiyuan,et al. MAPPING THE REAL-SPACE DISTRIBUTIONS OF GALAXIES IN SDSS DR7. I. TWO-POINT CORRELATION FUNCTIONS[J]. ASTROPHYSICAL JOURNAL,2016,833(2). |
| APA | Shi, Feng.,Yang, Xiaohu.,Wang, Huiyuan.,Zhang, Youcai.,Mo, H. J..,...&Yang, Lei.(2016).MAPPING THE REAL-SPACE DISTRIBUTIONS OF GALAXIES IN SDSS DR7. I. TWO-POINT CORRELATION FUNCTIONS.ASTROPHYSICAL JOURNAL,833(2). |
| MLA | Shi, Feng,et al."MAPPING THE REAL-SPACE DISTRIBUTIONS OF GALAXIES IN SDSS DR7. I. TWO-POINT CORRELATION FUNCTIONS".ASTROPHYSICAL JOURNAL 833.2(2016). |
入库方式： OAI收割
来源：上海天文台
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