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On the Infall of Matter Into Clusters of Galaxies and Some Effects on Their Evolution

James E. Gunn, III Gott J. Richard

The Astrophysical Journal · 1972 · 3,918 citations

doi.org/10.1086/151605

Abstract

A theory of infall of material into clusters of galaxies is developed and applied to the Coma chister. It is suggested that the infall phenomenon is responsible for the growth of cluster galaxies. The generation of a hot intracluster medium is discussed and its relation to the observed absence of normal spirals in rich clusters investigated. The inference made earlier by Gott and Gunn that the observed X-ray luminosity of Coma puts severe constraints on the deceleration parameter qo is further elucidated. We discuss the relation of these phenomena to the morphology of clusters, and find that some observed regularities in their observed properties can be explained.

Cite this paper

Gunn, J. E., & Richard, I. G. J. (1972). On the infall of matter into clusters of galaxies and some effects on their evolution. The Astrophysical Journal, 176, 1. https://doi.org/10.1086/151605

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