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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
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume472Issue:3Pages:2869-2876
AbstractWe 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.
SubtypeArticle
KeywordGalaxies: Statistics Galaxies: Structure Distance Scale Large-scale Structure Of Universe Cosmology: Observations
WOS HeadingsScience & Technology ; Physical Sciences
Funding OrganizationNewton 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
WOS KeywordLUMINOUS RED GALAXIES ; DIGITAL SKY SURVEY ; POWER-SPECTRUM ANALYSIS ; MEASURING D-A ; DISTANCE ; SCALE ; PEAK ; H(Z) ; CONSTANT ; D-A(Z)
Indexed BySCI
Language英语
Funding OrganizationNewton 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 Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000413088400031
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/20096
Collection星系宇宙学研究部
Affiliation1.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
Recommended Citation
GB/T 7714
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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