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The clustering of galaxies in the sdss-iii baryon oscillation spectroscopic survey: Baryon acoustic oscillations in the data release 9 spectroscopic galaxy sample

Author(s): Anderson, L; Aubourg, E; Bailey, S; Bizyaev, D; Blanton, M; et al

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Abstract: We present measurements of galaxy clustering from the Baryon Oscillation Spectroscopic Survey (BOSS), which is part of the Sloan Digital Sky Survey III (SDSS-III). These use the Data Release 9 (DR9) CMASS sample, which contains 264 283 massive galaxies covering 3275 square degrees with an effective redshift z = 0.57 and redshift range 0.43 < z < 0.7. Assuming a concordance λCDM cosmological model, this sample covers an effective volume of 2.2 Gpc3, and represents the largest sample of the Universe ever surveyed at this density, n̄ 3 × 10-4 h-3 Mpc3. We measure the angle-averaged galaxy correlation function and power spectrum, including density-field reconstruction of the baryon acoustic oscillation (BAO) feature. The acoustic features are detected at a significance of 5σ in both the correlation function and power spectrum. Combining with the SDSS-II luminous red galaxy sample, the detection significance increases to 6.7σ. Fitting for the position of the acoustic features measures the distance to z = 0.57 relative to the sound horizon DV/rs = 13.67 ± 0.22 at z = 0.57. Assuming a fiducial sound horizon of 153.19 Mpc, which matches cosmic microwave background constraints, this corresponds to a distance DV (z = 0.57) = 2094 ± 34 Mpc. At 1.7 per cent, this is the most precise distance constraint ever obtained from a galaxy survey. We place this result alongside previous BAO measurements in a cosmological distance ladder and find excellent agreement with the current supernova measurements. We use these distance measurements to constrain various cosmological models, finding continuing support for a flat Universe with a cosmological constant. © 2012 The Authors.
Publication Date: 21-Dec-2012
Citation: Anderson, L, Aubourg, E, Bailey, S, Bizyaev, D, Blanton, M, Bolton, AS, Brinkmann, J, Brownstein, JR, Burden, A, Cuesta, AJ, da Costa, LAN, Dawson, KS, de Putter, R, Eisenstein, DJ, Gunn, JE, Guo, H, Hamilton, JC, Harding, P, Ho, S, Honscheid, K, Kazin, E, Kirkby, D, Kneib, JP, Labatie, A, Loomis, C, Lupton, RH, Malanushenko, E, Malanushenko, V, Mandelbaum, R, Manera, M, Maraston, C, McBride, CK, Mehta, KT, Mena, O, Montesano, F, Muna, D, Nichol, RC, Nuza, SE, Olmstead, MD, Oravetz, D, Padmanabhan, N, Palanque-Delabrouille, N, Pan, K, Parejko, J, Pâris, I, Percival, WJ, Petitjean, P, Prada, F, Reid, B, Roe, NA, Ross, AJ, Ross, NP, Samushia, L, Sánchez, AG, Schlegel, DJ, Schneider, DP, Scóccola, CG, Seo, HJ, Sheldon, ES, Simmons, A, Skibba, RA, Strauss, MA, Swanson, MEC, Thomas, D, Tinker, JL, Tojeiro, R, Magaña, MV, Verde, L, Wagner, C, Wake, DA, Weaver, BA, Weinberg, DH, White, M, Xu, X, Yèche, C, Zehavi, I, Zhao, GB. (2012). The clustering of galaxies in the sdss-iii baryon oscillation spectroscopic survey: Baryon acoustic oscillations in the data release 9 spectroscopic galaxy sample. Monthly Notices of the Royal Astronomical Society, 427 (4), 3435 - 3467. doi:10.1111/j.1365-2966.2012.22066
DOI: doi:10.1111/j.1365-2966.2012.22066
ISSN: 0035-8711
EISSN: 1365-2966
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Pages: 3435 - 3467
Type of Material: Journal Article
Journal/Proceeding Title: Monthly Notices of the Royal Astronomical Society
Version: Final published version. Article is made available in OAR by the publisher's permission or policy.

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