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Alignment of galaxies in the Coma Cluster

Djorgovski, S. (1983) Alignment of galaxies in the Coma Cluster. Astrophysical Journal, 274 . L7-L11. ISSN 0004-637X. doi:10.1086/184140.

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Analysis of photometry data of the Coma Cluster galaxies shows a prominent effect of galaxy alignment with the cluster itself. The effect shows strong dependence on galaxy position within the cluster, galaxy, luminosity, and, to a lesser degree, color. Galaxies also show a tendency to point toward their nearest neighbors. Quantitative analysis of these effects is presented. Independent measurements of position angles in a small subset of data have been performed. Possible spurious causes for anisotropy are discussed, and it is argued that the effect is real. Weak tendencies found by the earlier authors are in agreement with the results reported here. This effect gives strong support to the adiabatic (fragmentation) picture of galaxy and cluster formation.

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Djorgovski, S.0000-0002-0603-3087
Additional Information:© 1983 The American Astronomical Society. Provided by the NASA Astrophysics Data System. Received 1983 May 5; accepted 1983 June 9. I am greatly indebted to Dr. J. Godwin for communicating the data in a computer-readable form. Many of my colleagues at Berkeley provided useful discussion and criticisms. This work has been partly supported by a University of California Graduate Fellowship and the NSF grant AST-8118557.
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University of California, BerkeleyUNSPECIFIED
Subject Keywords:cosmology—galaxies: clustering—galaxies: formation—galaxies: general
Record Number:CaltechAUTHORS:20190730-160032192
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:97537
Deposited By: Tony Diaz
Deposited On:31 Jul 2019 15:53
Last Modified:16 Nov 2021 17:32

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