期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 444, 期 1, 页码 476-502出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stu1391
关键词
galaxies: haloes; galaxies: statistics; cosmological parameters; large-scale structure of Universe
资金
- Alfred P. Sloan Foundation
- National Science Foundation [PHYS-1066293]
- US Department of Energy Office of Science
- University of Arizona
- Brazilian Participation Group
- Brookhaven National Laboratory
- University of Cambridge
- Carnegie Mellon University
- University of Florida
- French Participation Group
- German Participation Group
- Harvard University
- Instituto de Astrofisica de Canarias
- Michigan State/Notre Dame/JINA Participation Group
- Johns Hopkins University
- Lawrence Berkeley National Laboratory
- Max Planck Institute for Astrophysics
- Max Planck Institute for Extraterrestrial Physics
- New Mexico State University
- New York University
- Ohio State University
- Pennsylvania State University
- University of Portsmouth
- Princeton University
- Spanish Participation Group
- University of Tokyo
- University of Utah
- Vanderbilt University
- University of Virginia
- University of Washington
- Yale University
- NASA through Hubble Fellowship grant - Space Telescope Science Institute [51280]
- NASA [NAS 5-26555]
- World Premier International Research Center Initiative (WPI Initiative), MEXT, Japan
We perform the first fit to the anisotropic clustering of Sloan Digital Sky Survey III CMASS data release 10 galaxies on scales of similar to 0.8-32 h(-1) Mpc. A standard halo occupation distribution model evaluated near the best-fitting Planck Alpha cold dark matter (Lambda CDM) cosmology provides a good fit to the observed anisotropic clustering, and implies a normalization for the peculiar velocity field of M similar to 2 x 10(13)h(-1) M-circle dot haloes of f sigma(8)(z = 0.57) = 0.450 +/- 0.011. Since this constraint includes both quasi-linear and non-linear scales, it should severely constrain modified gravity models that enhance pairwise infall velocities on these scales. Though model dependent, our measurement represents a factor of 2.5 improvement in precision over the analysis of DR11 on large scales, f sigma(8)(z = 0.57) = 0.447 +/- 0.028, and is the tightest single constraint on the growth rate of cosmic structure to date. Our measurement is consistent with the Planck Lambda CDM prediction of 0.480 +/- 0.010 at the similar to 1.9 sigma level. Assuming a halo mass function evaluated at the best-fitting Planck cosmology, we also find that 10 per cent of CMASS galaxies are satellites in haloes of mass M similar to 6 x 10(13) h(-1) M-circle dot. While none of our tests and model generalizations indicate systematic errors due to an insufficiently detailed model of the galaxy-halo connection, the precision of these first results warrant further investigation into the modelling uncertainties and degeneracies with cosmological parameters.
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