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Smoothing the redshift distributions of random samples for the baryon acoustic oscillations: applications to the SDSS-III BOSS DR12 and QPM mock samples
Wang, Shao-Jiang1,2,3; Guo, Qi4,5; Cai, Rong-Gen1,2,3
2017-12-01
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷号472期号:3页码:2869-2876
摘要We investigate the impact of different redshift distributions of random samples on the baryon acoustic oscillations (BAO) measurements of D-V(z)r(d)(fid)/r(d) from the two-point correlation functions of galaxies in the Data Release 12 of the Baryon Oscillation Spectroscopic Survey (BOSS). Big surveys, such as BOSS, usually assign redshifts to the random samples by randomly drawing values from the measured redshift distributions of the data, which would necessarily introduce fiducial signals of fluctuations into the random samples, weakening the signals of BAO, if the cosmic variance cannot be ignored. We propose a smooth function of redshift distribution that fits the data well to populate the random galaxy samples. The resulting cosmological parameters match the input parameters of the mock catalogue very well. The significance of BAO signals has been improved by 0.33 sigma for a low-redshift sample and by 0.03 sigma for a constant-stellar-mass sample, though the absolute values do not change significantly. Given the precision of the measurements of current cosmological parameters, it would be appreciated for the future improvements on the measurements of galaxy clustering.
文章类型Article
关键词Galaxies: Statistics Galaxies: Structure Distance Scale Large-scale Structure Of Universe Cosmology: Observations
WOS标题词Science & Technology ; Physical Sciences
资助者Newton Advanced Fellowship ; Newton Advanced Fellowship ; NSFC(11573033 ; NSFC(11573033 ; Strategic Priority Research Program 'The Emergence of Cosmological Structure' of the Chinese Academy of Sciences(XDB09000000) ; Strategic Priority Research Program 'The Emergence of Cosmological Structure' of the Chinese Academy of Sciences(XDB09000000) ; 'Recruitment Program of Global Youth Experts'of China ; 'Recruitment Program of Global Youth Experts'of China ; NAOC grant(Y434011V01) ; NAOC grant(Y434011V01) ; Strategic Priority Research Program of the Chinese Academy of Science (CAS)(XDB09000000) ; Strategic Priority Research Program of the Chinese Academy of Science (CAS)(XDB09000000) ; key project of CAS(QYZDJ-SSW-SYS006) ; key project of CAS(QYZDJ-SSW-SYS006) ; National Natural Science Foundation of China(11375247 ; National Natural Science Foundation of China(11375247 ; 11622325) ; 11622325) ; 11435006) ; 11435006) ; Newton Advanced Fellowship ; Newton Advanced Fellowship ; NSFC(11573033 ; NSFC(11573033 ; Strategic Priority Research Program 'The Emergence of Cosmological Structure' of the Chinese Academy of Sciences(XDB09000000) ; Strategic Priority Research Program 'The Emergence of Cosmological Structure' of the Chinese Academy of Sciences(XDB09000000) ; 'Recruitment Program of Global Youth Experts'of China ; 'Recruitment Program of Global Youth Experts'of China ; NAOC grant(Y434011V01) ; NAOC grant(Y434011V01) ; Strategic Priority Research Program of the Chinese Academy of Science (CAS)(XDB09000000) ; Strategic Priority Research Program of the Chinese Academy of Science (CAS)(XDB09000000) ; key project of CAS(QYZDJ-SSW-SYS006) ; key project of CAS(QYZDJ-SSW-SYS006) ; National Natural Science Foundation of China(11375247 ; National Natural Science Foundation of China(11375247 ; 11622325) ; 11622325) ; 11435006) ; 11435006)
DOI10.1093/mnras/stx2183
关键词[WOS]LUMINOUS RED GALAXIES ; DIGITAL SKY SURVEY ; POWER-SPECTRUM ANALYSIS ; MEASURING D-A ; DISTANCE ; SCALE ; PEAK ; H(Z) ; CONSTANT ; D-A(Z)
收录类别SCI
语种英语
资助者Newton Advanced Fellowship ; Newton Advanced Fellowship ; NSFC(11573033 ; NSFC(11573033 ; Strategic Priority Research Program 'The Emergence of Cosmological Structure' of the Chinese Academy of Sciences(XDB09000000) ; Strategic Priority Research Program 'The Emergence of Cosmological Structure' of the Chinese Academy of Sciences(XDB09000000) ; 'Recruitment Program of Global Youth Experts'of China ; 'Recruitment Program of Global Youth Experts'of China ; NAOC grant(Y434011V01) ; NAOC grant(Y434011V01) ; Strategic Priority Research Program of the Chinese Academy of Science (CAS)(XDB09000000) ; Strategic Priority Research Program of the Chinese Academy of Science (CAS)(XDB09000000) ; key project of CAS(QYZDJ-SSW-SYS006) ; key project of CAS(QYZDJ-SSW-SYS006) ; National Natural Science Foundation of China(11375247 ; National Natural Science Foundation of China(11375247 ; 11622325) ; 11622325) ; 11435006) ; 11435006) ; Newton Advanced Fellowship ; Newton Advanced Fellowship ; NSFC(11573033 ; NSFC(11573033 ; Strategic Priority Research Program 'The Emergence of Cosmological Structure' of the Chinese Academy of Sciences(XDB09000000) ; Strategic Priority Research Program 'The Emergence of Cosmological Structure' of the Chinese Academy of Sciences(XDB09000000) ; 'Recruitment Program of Global Youth Experts'of China ; 'Recruitment Program of Global Youth Experts'of China ; NAOC grant(Y434011V01) ; NAOC grant(Y434011V01) ; Strategic Priority Research Program of the Chinese Academy of Science (CAS)(XDB09000000) ; Strategic Priority Research Program of the Chinese Academy of Science (CAS)(XDB09000000) ; key project of CAS(QYZDJ-SSW-SYS006) ; key project of CAS(QYZDJ-SSW-SYS006) ; National Natural Science Foundation of China(11375247 ; National Natural Science Foundation of China(11375247 ; 11622325) ; 11622325) ; 11435006) ; 11435006)
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000413088400031
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/20096
专题星系宇宙学研究部
作者单位1.Chinese Acad Sci, CAS Key Lab Theoret Phys, Inst Theoret Phys, 55 Zhong Guan Cun East Rd, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Phys Sci, 19A Yuqua Rd, Beijing 100049, Peoples R China
3.Kyoto Univ, Ctr Gravitat Phys, Yukawa Inst Theoret Phys, Kyoto 6068502, Japan
4.Chinese Acad Sci, Natl Astron Observ, 20A Datun Rd, Beijing 10012, Peoples R China
5.Univ Chinese Acad Sci, Sch Astron & Space Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
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Wang, Shao-Jiang,Guo, Qi,Cai, Rong-Gen. Smoothing the redshift distributions of random samples for the baryon acoustic oscillations: applications to the SDSS-III BOSS DR12 and QPM mock samples[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2017,472(3):2869-2876.
APA Wang, Shao-Jiang,Guo, Qi,&Cai, Rong-Gen.(2017).Smoothing the redshift distributions of random samples for the baryon acoustic oscillations: applications to the SDSS-III BOSS DR12 and QPM mock samples.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,472(3),2869-2876.
MLA Wang, Shao-Jiang,et al."Smoothing the redshift distributions of random samples for the baryon acoustic oscillations: applications to the SDSS-III BOSS DR12 and QPM mock samples".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 472.3(2017):2869-2876.
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