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Spatial Distribution of Galaxies: Biased Galaxy Formation, Supercluster-Void Topology, and Isolated Galaxies

Published online by Cambridge University Press:  19 July 2016

Jaan Einasto  and
Enn Saar
Jaan Einasto
Affiliation:
Tartu Astrophysical Observatory, 202444 Toravere, Estonia, U.S.S.R.
Enn Saar
Affiliation:
Tartu Astrophysical Observatory, 202444 Toravere, Estonia, U.S.S.R.

Abstract

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To study distribution of galaxies and voids, the rectangular box under study is divided into cubic cells, and mean density of particles in cells is derived. For any density level cells can be divided into ‘filled’ or ‘empty’ ones if their density is higher or lower than a threshold density. The length and volume of the largest connected system, as well as the number of systems of connected cells are derived for observed, model and random samples. The comparison of results demonstrates that galaxy formation is biased, supercluster-void topology is sponge-like in a wide threshold density interval, and that there are no isolated galaxies in voids.

Type
CHAPTER IV: The Large Scale Distribution of Galaxies
Information
Symposium - International Astronomical Union , Volume 124: Observational Cosmology , 1987 , pp. 349 - 358
Copyright
Copyright © Reidel 1987 

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