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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

Research output: Contribution to journalArticle

  • 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
  • Nikhil Padmanabhan
  • Will J. Percival
  • Beth A. Reid
  • Nicholas P. Ross
  • Ariel G. Sánchez
  • David J. Schlegel
  • Donald P. Schneider
  • Jeremy Tinker
  • Rita Tojeiro
  • Licia Verde
  • Martin White
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 Gpc3, a 10 per cent increment from Data Release 11. From an analysis of the spherically averaged correlation function, we infer a distance to z=0.57 of DV(z)rfidd/rd=2028±21 Mpc and a distance to z=0.32 of DV(z)rfidd/rd=1264±22 Mpc assuming a cosmology in which rfidd=147.10 Mpc. From the anisotropic analysis, we find an angular diameter distance to z=0.57 of DA(z)rfidd/rd=1401±21 Mpc and a distance to z=0.32 of 981±20 Mpc, a 1.5 per cent and 2.0 per cent measurement respectively. The Hubble parameter at z=0.57 is H(z)rd/rfidd=100.3±3.7 km s−1 Mpc−1 and its value at z=0.32 is 79.2±5.6 km s−1 Mpc−1, a 3.7 per cent and 7.1 per cent measurement respectively. These cosmic distance scale constraints are in excellent agreement with a ΛCDM model with cosmological parameters released by the recent Planck 2015 results.
Original languageEnglish
Pages (from-to)1770-1785
JournalMonthly Notices of the Royal Astronomical Society
Issue number2
Early online date4 Feb 2016
Publication statusPublished - Apr 2016


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