期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 406, 期 1, 页码 320-328出版社
WILEY-BLACKWELL
DOI: 10.1111/j.1365-2966.2010.16707.x
关键词
galaxies: formation; galaxies: high-redshift; large-scale structure of Universe
资金
- 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
- Fermi National Accelerator Laboratory (Fermilab)
- Institute for Advanced Study
- Japan Participation Group
- Johns Hopkins University
- Korean Scientist Group
- Los Alamos National Laboratory
- Max Planck Institute for Astronomy
- Max Planck Institute for Astrophysics
- New Mexico State University
- University of Pittsburgh
- Princeton University
- United States Naval Observatory
- University of Washington
- NSF [AST-0707266]
We study filamentary structure in the galaxy distribution at z similar to 0.8 using data from the Deep Extragalactic Evolutionary Probe 2 (DEEP2) Redshift Survey and its evolution to z similar to 0.1 using data from the Sloan Digital Sky Survey (SDSS). We trace individual filaments for both surveys using the Smoothed Hessian Major Axis Filament Finder, an algorithm which employs the Hessian matrix of the galaxy density field to trace the filamentary structures in the distribution of galaxies. We extract 33 subsamples from the SDSS data with a geometry similar to that of DEEP2. We find that the filament length distribution has not significantly changed since z similar to 0.8, as predicted in a previous study using a Lambda cold dark matter cosmological N-body simulation. However, the filament width distribution, which is sensitive to the non-linear growth of structure, broadens and shifts to smaller widths for smoothing length-scales of 5-10 h-1 Mpc from z similar to 0.8 to 0.1, in accord with N-body simulations.
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