Filaments and Pancakes in the IRAS 1.2 JY Redshift Catalog
Abstract
We explore the shapes of clusters and superclusters in the IRAS 1.2 Jy redshift survey with three reconstructions spanning the range β=0.1, 0.5, and 1.0, where β=Ω0.6/b b is the bias factor, and Ω is the present value of the dimensionless matter density. Comparing our results with Gaussian randomized reconstructions of the IRAS catalog, we find structures having both planar and filamentary properties. For β=0.5 and 1.0, the largest structures in the survey have a distinct tendency to be filament-like, in general agreement with the results of N-body simulations.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- November 1998
- DOI:
- 10.1086/311689
- arXiv:
- arXiv:astro-ph/9805265
- Bibcode:
- 1998ApJ...507L.109S
- Keywords:
-
- COSMOLOGY: THEORY;
- GALAXIES: CLUSTERS: GENERAL;
- INFRARED: GALAXIES;
- COSMOLOGY: LARGE-SCALE STRUCTURE OF UNIVERSE;
- METHODS: ANALYTICAL;
- METHODS: NUMERICAL;
- Cosmology: Theory;
- Galaxies: Clusters: General;
- Infrared: Galaxies;
- Cosmology: Large-Scale Structure of Universe;
- Methods: Analytical;
- Methods: Numerical;
- Astrophysics
- E-Print:
- Latex (7 pages with aas2pp4.sty)