期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 411, 期 1, 页码 332-336出版社
WILEY-BLACKWELL
DOI: 10.1111/j.1365-2966.2010.17686.x
关键词
methods: numerical; galaxies: statistics; cosmology: theory; large-scale structure of Universe
资金
- DST
- Alfred P. Sloan Foundation
- National Aeronautics and Space Administration
- National Science Foundation
- U.S. Department of Energy
- Japanese Monbukagakusho
- Max Planck Society
- University of Chicago
- Fermilab
- Institute for Advanced Study
- Japan Participation Group
- Johns Hopkins University
- Korean Scientist Group, Los Alamos National Laboratory
- Max-Planck-Institute for Astronomy (MPIA)
- Max-Planck-Institute for Astrophysics (MPA)
- New Mexico State University
- University of Pittsburgh
- Princeton University
- United States Naval Observatory
- University of Washington
Filaments are one of the most prominent features visible in the galaxy distribution. Considering the luminous red galaxies in the Sloan Digital Sky Survey Data Release Seven (SDSS DR7), we have analysed the filamentarity in 11 nearly 2D sections through a volume limited subsample of these data. The galaxy distribution, we find, has excess filamentarity in comparison to a random distribution of points. We use a statistical technique 'Shuffle' to determine L-MAX, the largest length-scale at which we have statistically significant filaments. We find that L-MAX varies in the range 100-130 h(-1) Mpc across the 11 slices, with a mean value L-MAX = 110 +/- 12 h(-1) Mpc. Longer filaments, though possibly present in our data, are not statistically significant and are the outcome of chance alignments.
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