Details

Autor(en) / Beteiligte

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

Titel

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

Ist Teil von

• Monthly notices of the Royal Astronomical Society, 2016-04, Vol.457 (2), p.1770-1785

Ort / Verlag

London: Oxford University Press

Erscheinungsjahr

2016

Link zum Volltext

Quelle

Electronic Journals Library

Beschreibungen/Notizen

• We present distance scale measurements from the baryon acoustic oscillation signal in the constant stellar mass and low-redshift sample samples from the Data Release 12 of the Baryon Oscillation Spectroscopic Survey. 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 $D_V(z)r^{\rm fid}_{\rm d}/r_{\rm d} = 2028\pm 21$  Mpc and a distance to z = 0.32 of $D_V(z)r^{\rm fid}_{\rm d}/r_{\rm d} = 1264\pm 22$  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 $D_{\rm A}(z)r^{\rm fid}_{\rm d}/r_{\rm d} = 1401\pm 21$  Mpc and a distance to z = 0.32 of 981 ± 20 Mpc, a 1.5 and 2.0 per cent measurement, respectively. The Hubble parameter at z = 0.57 is $H(z)r_{\rm d}/r^{\rm fid}_{\rm d} = 100.3\pm 3.7$  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 and 7.1 per cent measurement, respectively. These cosmic distance scale constraints are in excellent agreement with a Λ cold dark matter model with cosmological parameters released by the recent Planck 2015 results.