%0 Journal Article
%J Monthly Notices of the Royal Astronomical Society
%D 2017
%T The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: tomographic BAO analysis of DR12 combined sample in configuration space
%A Wang, Yuting
%A Zhao, Gong-bo
%A Chuang, Chia-Hsun
%A Ashley J. Ross
%A Will J. Percival
%A Gil-Marín, Héctor
%A Antonio J. Cuesta
%A Francisco-Shu Kitaura
%A Rodriguez-Torres, Sergio
%A Brownstein, Joel R.
%A Daniel J. Eisenstein
%A Ho, Shirley
%A Kneib, Jean-Paul
%A Olmstead, Matthew D.
%A Prada, Francisco
%A Rossi, Graziano
%A Sánchez, Ariel G.
%A Salazar-Albornoz, Salvador
%A Thomas, Daniel
%A Tinker, Jeremy
%A Tojeiro, Rita
%A Vargas-Magaña, Mariana
%A Zhu, Fangzhou
%K dark energy; distance scale
%X We perform a tomographic baryon acoustic oscillations (BAOs) analysisusing the two-point galaxy correlation function measured from thecombined sample of Baryon Oscillation Spectroscopic Survey Data Release12 (BOSS DR12), which covers the redshift range of 0.2 < z < 0.75.Upon splitting the sample into multiple overlapping redshift slices toextract the redshift information of galaxy clustering, we obtain ameasurement of DA(z)/rd and H(z)rd atnine effective redshifts with the full covariance matrix calibratedusing MultiDark-Patchy mock catalogues. Using the reconstructed galaxycatalogues, we obtain the precision of 1.3-2.2 per cent forDA(z)/rd and 2.1-6.0 per cent forH(z)rd. To quantify the gain from the tomographicinformation, we compare the constraints on the cosmological parametersusing our nine-bin BAO measurements, the consensus three-bin BAO andredshift space distortion measurements at three effective redshifts inAlam et al., and the non-tomographic (one-bin) BAO measurement at asingle effective redshift. Comparing the nine-bin with one-binconstraint result, it can improve the dark energy Figure of Merit by afactor of 1.24 for the Chevallier-Polarski-Linder parametrization forequation-of-state parameter wDE. The errors of w0and wa from nine-bin constraints are slightly improved whencompared to the three-bin constraint result.
%B Monthly Notices of the Royal Astronomical Society
%V 469
%P 3762-3774
%8 August 1, 2017
%@ 0035-8711
%G eng
%U http://adsabs.harvard.edu/abs/2017MNRAS.469.3762W
%3 10.1093/mnras/stx1090