Issue |
A&A
Volume 418, Number 1, April IV 2004
|
|
---|---|---|
Page(s) | 7 - 23 | |
Section | Cosmology (including clusters of galaxies) | |
DOI | https://doi.org/10.1051/0004-6361:20031780 | |
Published online | 02 April 2004 |
Large scale structure in the SDSS galaxy survey
1
Theoretical Astrophysics Center, Juliane Maries Vej 30, 2100 Copenhagen Ø, Denmark
2
Keldysh Institute of Applied Mathematics, Russian Academy of Sciences, 125047 Moscow, Russia
3
Fermi National Accelerator Laboratory, MS 127, PO Box 500, Batavia, IL 60510 USA
4
Department of Astronomy, New Mexico State University, Las Cruces, NM 88003-8001 USA
5
NASA Ames Research Center, Space Sciences Division, MS 245-6, Moffett Field, CA 94035, USA
Corresponding author: D. L. Tucker, dtucker@fnal.gov
Received:
15
July
2003
Accepted:
23
December
2003
The Large Scale Structure in the galaxy distribution is
investigated using Data Release 1 of the Sloan Digital
Sky Survey. Using the Minimal Spanning Tree technique we have
extracted sets of filaments, of wall-like structures, of galaxy
groups, and of rich clusters from this unique sample. The physical
properties of these structures were then measured and compared with
the statistical expectations based on Zel'dovich theory.
The measured characteristics of galaxy walls were found to be
consistent with those for a spatially flat ΛCDM
cosmological model with and
, and for Gaussian initial perturbations with a
Harrison – Zel'dovich power spectrum. Furthermore, we found that
the mass functions of groups and of unrelaxed structure elements
generally fit well with the expectations from Zel'dovich theory.
We also note that both groups and rich clusters tend to prefer the
environments of walls, which tend to be of higher density, rather
than the environments of filaments, which tend to be of lower density.
Key words: cosmology: large-scale structure of the Universe / surveys
© ESO, 2004
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