Bibcode
Anderson, L.; Aubourg, Éric; Bailey, Stephen; Beutler, Florian; Bhardwaj, Vaishali; Blanton, Michael; Bolton, Adam S.; Brinkmann, J.; Brownstein, Joel R.; Burden, Angela; Chuang, Chia-Hsun; Cuesta, Antonio J.; Dawson, Kyle S.; Eisenstein, Daniel J.; Escoffier, Stephanie; Gunn, James E.; Guo, Hong; Ho, Shirley; Honscheid, Klaus; Howlett, Cullan; Kirkby, David; Lupton, Robert H.; Manera, Marc; Maraston, Claudia; McBride, Cameron K.; Mena, Olga; Montesano, Francesco; Nichol, Robert C.; Nuza, Sebastián E.; Olmstead, Matthew D.; Padmanabhan, Nikhil; Palanque-Delabrouille, Nathalie; Parejko, John; Percival, Will J.; Petitjean, Patrick; Prada, Francisco; Price-Whelan, Adrian M.; Reid, Beth; Roe, Natalie A.; Ross, Ashley J.; Ross, Nicholas P.; Sabiu, Cristiano G.; Saito, Shun; Samushia, Lado; Sánchez, Ariel G.; Schlegel, David J.; Schneider, Donald P.; Scoccola, C. G.; Seo, Hee-Jong; Skibba, Ramin A.; Strauss, Michael A.; Swanson, Molly E. C.; Thomas, Daniel; Tinker, Jeremy L.; Tojeiro, Rita; Magaña, Mariana Vargas; Verde, Licia; Wake, David A.; Weaver, Benjamin A.; Weinberg, David H.; White, Martin; Xu, Xiaoying; Yèche, Christophe; Zehavi, Idit; Zhao, Gong-Bo
Referencia bibliográfica
Monthly Notices of the Royal Astronomical Society, Volume 441, Issue 1, p.24-62
Advertised on:
6
2014
Número de citas
1000
Número de citas referidas
931
Descripción
We present a one per cent measurement of the cosmic distance scale from
the detections of the baryon acoustic oscillations (BAO) in the
clustering of galaxies from the Baryon Oscillation Spectroscopic Survey,
which is part of the Sloan Digital Sky Survey III. Our results come from
the Data Release 11 (DR11) sample, containing nearly one million
galaxies and covering approximately 8500 square degrees and the redshift
range 0.2 < z < 0.7. We also compare these results with those from
the publicly released DR9 and DR10 samples. Assuming a concordance
Λ cold dark matter (ΛCDM) cosmological model, the DR11
sample covers a volume of 13 Gpc3 and is the largest region
of the Universe ever surveyed at this density. We measure the
correlation function and power spectrum, including density-field
reconstruction of the BAO feature. The acoustic features are detected at
a significance of over 7σ in both the correlation function and
power spectrum. Fitting for the position of the acoustic features
measures the distance relative to the sound horizon at the drag epoch,
rd, which has a value of rd,fid = 149.28 Mpc in
our fiducial cosmology. We find DV = (1264 ± 25
Mpc)(rd/rd,fid) at z = 0.32 and DV =
(2056 ± 20 Mpc)(rd/rd,fid) at z = 0.57. At
1.0 per cent, this latter measure is the most precise distance
constraint ever obtained from a galaxy survey. Separating the clustering
along and transverse to the line of sight yields measurements at z =
0.57 of DA = (1421 ± 20
Mpc)(rd/rd,fid) and H = (96.8 ± 3.4 km
s-1 Mpc-1)(rd,fid/rd). Our
measurements of the distance scale are in good agreement with previous
BAO measurements and with the predictions from cosmic microwave
background data for a spatially flat CDM model with a cosmological
constant.
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