Cited by 1,745Cosmology and Gravitation TheoriesGalaxies: Formation, Evolution, PhenomenaStellar, planetary, and galactic studies

The clustering of the SDSS DR7 main Galaxy sample – I. A 4 per cent distance measure at z=0.15

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Ross, Ashley J., Samushia, Lado, Howlett, Cullan, Percival, Will J., Burden, Angela, Manera, Marc·2015·Monthly Notices of the Royal Astronomical Society

Abstract

We create a sample of spectroscopically identified galaxies with z < 0.2 from the Sloan Digital Sky Survey (SDSS) Data Release 7 (DR7), covering 6813 deg2. Galaxies are chosen to sample the highest mass haloes, with an effective bias of 1.5, allowing us to construct 1000 mock galaxy catalogues (described in Paper II), which we use to estimate statistical errors and test our methods. We use an estimate of the gravitational potential to ‘reconstruct’ the linear density fluctuations, enhancing the baryon acoustic oscillation (BAO) signal in the measured correlation function and power spectrum. Fitting to these measurements, we determine DV(zeff = 0.15) = (664 ± 25)(rd/rd, fid) Mpc; this is a better than 4 per cent distance measurement. This ‘fills the gap’ in BAO distance ladder between previously measured local and higher redshift measurements, and affords significant improvement in constraining the properties of dark energy. Combining our measurement with other BAO measurements from Baryon Oscillation Spectroscopic Survey and 6-degree Field Galaxy Redshift Survey galaxy samples provides a 15 per cent improvement in the determination of the equation of state of dark energy and the value of the Hubble parameter at z = 0 (H0). Our measurement is fully consistent with the Planck results and the Λ cold dark matter concordance cosmology, but increases the tension between Planck+BAO H0 determinations and direct H0 measurements.

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Authors
Ross, A. J., Samushia, L., Howlett, C., Percival, W. J., Burden, A., & Manera, M.
Affiliations
  • The Ohio State University (US)
  • Ilia State University (GE)
  • University of Portsmouth (GB)
  • University College London (GB)
Corresponding author
Ross, Ashley J.
Venue
Monthly Notices of the Royal Astronomical Society
Published
2015-03-19
Volume
449
Issue
1
Pages
835-847
ISSN
  • 0035-8711 (ISSN-L)
  • 1365-2966
OpenAlex
W2170967203
Cited by
1,745
References
76
Citations by year
2026: 61 · 2025: 152 · 2024: 209 · 2023: 179 · 2022: 185 · 2021: 195 · 2020: 206 · 2019: 172 · 2018: 144 · 2017: 117 · 2016: 94 · 2015: 30 · 2014: 1
FWCI
73.01
Type
journal article
Language
en
Open access
Locations
  • Monthly Notices of the Royal Astronomical Society (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • K-State Research Exchange (Kansas State University) (submittedVersion)
  • arXiv (Cornell University)
Funders
  • National Science Foundation
  • U.S. Department of Energy
  • National Aeronautics and Space Administration
  • Alfred P. Sloan Foundation
  • Princeton University
  • University of Chicago
  • University of Washington
  • Johns Hopkins University
  • University of Pittsburgh
  • University of Portsmouth
  • New Mexico State University
  • Max-Planck-Gesellschaft
  • Max-Planck-Institut für Astrophysik
  • South East Physics Network
  • Max-Planck-Institut für Astronomie
  • Science and Technology Facilities Council (ST/J500665/1, ST/K0090X/1, ST/K502248/1, ST/K00090X/1)
  • U.S. Naval Observatory
  • Fermilab
  • Los Alamos National Laboratory
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Cosmology and Gravitation Theories
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Galaxies: Formation, Evolution, Phenomena
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Stellar, planetary, and galactic studies
Keywords
baryon acoustic oscillations, cosmic distance scale, dark energy equation of state, Hubble parameter, galaxy clustering, mock galaxy catalogues, Hubble tension, cosmological constraints

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