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Cosmological constraints from a combination of galaxy clustering and lensing - III. Application to SDSS data
文献类型：期刊论文
| 作者 | Cacciato, Marcello1; van den Bosch, Frank C.2; More, Surhud3,4; Mo, Houjun5; Yang, Xiaohu6 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2013-04-01 |
| 卷号 | 430期号:2页码:767-786 |
| 关键词 | gravitational lensing: weak methods: statistical galaxies: haloes cosmological parameters dark matter large-scale structure of Universe |
| 英文摘要 | We simultaneously constrain cosmology and galaxy bias using measurements of galaxy abundances, galaxy clustering and galaxy-galaxy lensing taken from the Sloan Digital Sky Survey. We use the conditional luminosity function (which describes the halo occupation statistics as a function of galaxy luminosity) combined with the halo model (which describes the non-linear matter field in terms of its halo building blocks) to describe the galaxy-dark matter connection. We explicitly account for residual redshift-space distortions in the projected galaxy-galaxy correlation functions, and marginalize over uncertainties in the scale dependence of the halo bias and the detailed structure of dark matter haloes. Under the assumption of a spatially flat, vanilla Lambda cold dark matter (Lambda CDM) cosmology, we focus on constraining the matter density, Omega(m), and the normalization of the matter power spectrum, sigma(8), and we adopt 7-year Wilkinson Microwave Anisotropy Probe (WMAP7) priors for the spectral index, n, the Hubble parameter, h, and the baryon density, Omega(b). We obtain that Omega(m) = 0.278(-0.026)(+0.023) and sigma(8) = 0.763(-0.049)(+0.064) (95 per cent CL). These results are robust to uncertainties in the radial number density distribution of satellite galaxies, while allowing for non-Poisson satellite occupation distributions results in a slightly lower value for sigma(8) (0.744(-0.047)(+0.056)). These constraints are in excellent agreement (at the 1 sigma level) with the cosmic microwave background constraints from WMAP. This demonstrates that the use of a realistic and accurate model for galaxy bias, down to the smallest non-linear scales currently observed in galaxy surveys, leads to results perfectly consistent with the vanilla Lambda CDM cosmology. |
| 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 ; DARK-MATTER HALOES ; LUMINOUS RED GALAXIES ; LARGE-SCALE STRUCTURE ; NUMBER DENSITY PROFILES ; PROBE WMAP OBSERVATIONS ; ANGULAR POWER SPECTRUM ; LY-ALPHA FOREST ; REDSHIFT SURVEY ; SATELLITE GALAXIES |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000318275000003 |
| 公开日期 | 2015-01-26 |
| 源URL | [http://119.78.226.72//handle/331011/15433]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | 1.Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel 2.Yale Univ, Dept Astron, New Haven, CT 06520 USA 3.Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA 4.Univ Tokyo, Kavli Inst Phys & Math Universe, Kashiwa, Chiba 2778583, Japan 5.Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA 6.Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cacciato, Marcello,van den Bosch, Frank C.,More, Surhud,et al. Cosmological constraints from a combination of galaxy clustering and lensing - III. Application to SDSS data[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2013,430(2):767-786. |
| APA | Cacciato, Marcello,van den Bosch, Frank C.,More, Surhud,Mo, Houjun,&Yang, Xiaohu.(2013).Cosmological constraints from a combination of galaxy clustering and lensing - III. Application to SDSS data.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,430(2),767-786. |
| MLA | Cacciato, Marcello,et al."Cosmological constraints from a combination of galaxy clustering and lensing - III. Application to SDSS data".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 430.2(2013):767-786. |
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