Cited by 2,590Cosmology and Gravitation TheoriesGalaxies: Formation, Evolution, PhenomenaStellar, planetary, and galactic studies

The 6dF Galaxy Survey: baryon acoustic oscillations and the local Hubble constant: 6dFGS: BAOs and the local Hubble constant

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Beutler, Florian, Blake, Chris, Colless, Matthew, Jones, D. Heath, Staveley-Smith, Lister, Campbell, Lachlan, Parker, Quentin, Saunders, Will +1 more·2011·Monthly Notices of the Royal Astronomical Society

Abstract

We analyse the large-scale correlation function of the 6dF Galaxy Survey (6dFGS) and detect a baryon acoustic oscillation (BAO) signal at 105 h−1 Mpc. The 6dFGS BAO detection allows us to constrain the distance–redshift relation at zeff= 0.106. We achieve a distance measure of DV(zeff) = 457 ± 27 Mpc and a measurement of the distance ratio, rs(zd)/DV(zeff) = 0.336 ± 0.015 (4.5 per cent precision), where rs(zd) is the sound horizon at the drag epoch zd. The low-effective redshift of 6dFGS makes it a competitive and independent alternative to Cepheids and low-z supernovae in constraining the Hubble constant. We find a Hubble constant of H0= 67 ± 3.2 km s−1 Mpc−1 (4.8 per cent precision) that depends only on the Wilkinson Microwave Anisotropy Probe-7 (WMAP-7) calibration of the sound horizon and on the galaxy clustering in 6dFGS. Compared to earlier BAO studies at higher redshift, our analysis is less dependent on other cosmological parameters. The sensitivity to H0 can be used to break the degeneracy between the dark energy equation of state parameter w and H0 in the cosmic microwave background data. We determine that w=−0.97 ± 0.13, using only WMAP-7 and BAO data from both 6dFGS and Percival et al. (2010). We also discuss predictions for the large-scale correlation function of two future wide-angle surveys: the Wide field ASKAP L-band Legacy All-sky Blind surveY (WALLABY) blind H i survey (with the Australian Square Kilometre Array Pathfinder, ASKAP) and the proposed Transforming Astronomical Imaging surveys through Polychromatic Analysis of Nebulae (TAIPAN) all-southern-sky optical galaxy survey with the UK Schmidt Telescope. We find that both surveys are very likely to yield detections of the BAO peak, making WALLABY the first radio galaxy survey to do so. We also predict that TAIPAN has the potential to constrain the Hubble constant with 3 per cent precision.

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Research works printed but not linked: 14

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Authors
Beutler, F., Blake, C., Colless, M., Jones, D. H., Staveley-Smith, L., Campbell, L., Parker, Q., Saunders, W., & Watson, F.
Affiliations
  • The University of Western Australia (AU)
  • Swinburne University of Technology (AU)
  • Australian Astronomical Observatory (AU)
  • Monash University (AU)
  • Western Kentucky University (US)
Corresponding author
Beutler, Florian
Venue
Monthly Notices of the Royal Astronomical Society
Published
2011-07-25
Volume
416
Issue
4
Pages
3017-3032
ISSN
0035-8711 (ISSN-L)
OpenAlex
W2121951791
Cited by
2,590
References
87
Citations by year
2026: 90 · 2025: 191 · 2024: 228 · 2023: 207 · 2022: 210 · 2021: 236 · 2020: 241 · 2019: 207 · 2018: 176 · 2017: 178 · 2016: 167 · 2015: 131 · 2014: 147 · 2013: 113 · 2012: 61
FWCI
54.71
Type
journal article
Language
en
Open access
Locations
  • Monthly Notices of the Royal Astronomical Society (publishedVersion)
  • UWA Profiles and Research Repository (UWA) (publishedVersion, other-oa)
  • arXiv (Cornell University) (submittedVersion)
  • Figshare (submittedVersion, cc-by)
  • The HKU Scholars Hub (University of Hong Kong) (submittedVersion)
  • ANU Open Research (Australian National University) (submittedVersion)
  • Swinburne figshare (Swinburne University of Technology) (submittedVersion)
  • arXiv (Cornell University)
  • American Astronomical Society Meeting Abstracts #219
  • Swinburne figshare (Swinburne University of Technology)
Funders
  • Australian Government
  • Australian National University
  • Australian Research Council (DP0208876)
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, 6dF Galaxy Survey, local Hubble constant, sound horizon, distance-redshift relation, dark energy equation of state, wallabies, taipan, radio galaxy surveys, cosmological constraints

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