The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: baryon acoustic oscillations in the Data Releases 10 and 11 Galaxy samples
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Open Access
- 21 April 2014
- journal article
- research article
- Published by Oxford University Press (OUP) in Monthly Notices of the Royal Astronomical Society
- Vol. 441 (1), 24-62
- https://doi.org/10.1093/mnras/stu523
Abstract
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.
Keywords
This publication has 109 references indexed in Scilit:
- Observational probes of cosmic accelerationPhysics Reports, 2013
- TOWARD A NEW GEOMETRIC DISTANCE TO THE ACTIVE GALAXY NGC 4258. III. FINAL RESULTS AND THE HUBBLE CONSTANTThe Astrophysical Journal, 2013
- The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: the low-redshift sampleMonthly Notices of the Royal Astronomical Society, 2012
- SPECTRAL CLASSIFICATION AND REDSHIFT MEASUREMENT FOR THE SDSS-III BARYON OSCILLATION SPECTROSCOPIC SURVEYThe Astronomical Journal, 2012
- The clustering of luminous red galaxies in the Sloan Digital Sky Survey imaging dataMonthly Notices of the Royal Astronomical Society, 2007
- Detection of the Baryon Acoustic Peak in the Large‐Scale Correlation Function of SDSS Luminous Red GalaxiesThe Astrophysical Journal, 2005
- HEALPix: A Framework for High‐Resolution Discretization and Fast Analysis of Data Distributed on the SphereThe Astrophysical Journal, 2005
- Efficient Computation of Cosmic Microwave Background Anisotropies in Closed Friedmann‐Robertson‐Walker ModelsThe Astrophysical Journal, 2000
- Measurements of Ω and Λ from 42 High‐Redshift SupernovaeThe Astrophysical Journal, 1999
- The Sloan Digital Sky Survey Photometric SystemThe Astronomical Journal, 1996