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The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations in the correlation function of LOWZ and CMASS galaxies in Data Release 12

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Author(s)

Antonio J. Cuesta, Mariana Vargas-Magaña, Florian Beutler, Adam S. Bolton, Joel R. Brownstein, Daniel J. Eisenstein, Héctor Gil-Marín, Shirley Ho, Cameron K. McBride, Claudia Maraston, Nikhil Padmanabhan, Will J. Percival, Beth A. Reid, Ashley J. Ross, Nicholas P. Ross, Ariel G. Sánchez, David J. Schlegel, Donald P. Schneider, Daniel Thomas, Jeremy Tinker & 3 more Rita Tojeiro, Licia Verde, Martin White

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Abstract

We present distance scale measurements from the baryon acoustic oscillation signal in the CMASS and LOWZ samples from the Data Release 12 of the Baryon Oscillation Spectroscopic Survey (BOSS). The total volume probed is 14.5 Gpc$^3$, a 10% increment from Data Release 11. From an analysis of the spherically averaged correlation function, we infer a distance to $z=0.57$ of $D_V(z)r^{\rm fid}_{\rm d}/r_ {\rm d}=2028\pm19$ Mpc and a distance to $z=0.32$ of $D_V(z)r^{\rm fid}_{\rm d}/r_{\rm d}=1263\pm21$ Mpc assuming a cosmology in which $r^{\rm fid}_{\rm d}=147.10$ Mpc. From the anisotropic analysis, we find an angular diameter distance to $z=0.57$ of $D_{\rm A}(z)r^{\rm fid}_{\rm d}/r_{\rm d}=1401\pm19$ Mpc and a distance to $z=0.32$ of $981\pm20$ Mpc, a 1.4% and 2.0% measurement respectively. The Hubble parameter at $z=0.57$ is $H(z)r_{\rm d}/r^{\rm fid}_{\rm d}=100.3\pm3.4$ km s$^{-1}$ Mpc$^{-1}$ and its value at $z=0.32$ is $79.2\pm5.5$ km s$^{-1}$ Mpc$^{-1}$, a 3.4% and 6.9% measurement respectively. These cosmic distance scale constraints are in excellent agreement with a $\Lambda$CDM model with cosmological parameters released by the recent Planck 2015 results.
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Original languageEnglish
Pages (from-to)1770-1785
JournalMonthly Notices of the Royal Astronomical Society
Volume457
Issue number2
Early online date4 Feb 2016
DOIs
Publication statusPublished - 1 Apr 2016

    Research areas

  • Astrophysics - Cosmology and Nongalactic Astrophysics

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