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Superclustering and Motion of Galaxy Clusters*

Published online by Cambridge University Press:  03 August 2017

Neta A. Bahcall
Neta A. Bahcall*
Affiliation:
Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD, USA

Abstract

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The evidence for the existence of very large scale structures, ∼ 100h−1 Mpc in size, as derived from the spatial distribution of clusters of galaxies is summarized. A “shell model” of galaxy clustering is described in which clusters of galaxies are located at shell intersections; the model yields results consistent with cluster observations. Detection of a ∼ 2000 km s−1 elongation in the redshift direction in the distribution of the clusters is also described. Possible causes of the effect are peculiar velocities of clusters on scales of 10–100h−1 Mpc and geometrical elongation of superclusters. If the effect is entirely due to the peculiar velocities of clusters, then superclusters have masses of order 1016,5M⊙ and may contain a larger amount of dark matter than previously anticipated.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 130: Large Scale Structures of the Universe , 1988 , pp. 229 - 238
Copyright
Copyright © Reidel 1988 

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