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The evolution of galaxies in clusters. I - ISIT photometry of C1 0024+1654 and 3C 295

Butcher, H., Oemler, A., Jr.·1978·The Astrophysical Journal

Abstract

A description is presented of a project of two-color photometry of a number of distant clusters. The KPNO ISIT vidicon described by Lynds (1975) and Strom (1976) is used in the project. The first results reported are related to photometry studies of the two rich clusters, C1 0024+1654 (z = 0.39) and the cluster around 3C 295 (z = 0.46). It is shown that between one third and one half of the galaxies in C1 0024+1654 and the cluster around 3C 295 have the colors of spirals. If they are spirals, this population is similar to those of nearby spiral-rich clusters like the Hercules cluster (Oemler, 1974). Structurally, however, these clusters resemble, not clusters like Hercules, which are irregular and lack central concentration, but rather Coma and other cD clusters. It appears, therefore, that the dependence of content on form, which nearby clusters show, is not shown by these distant clusters observed at an earlier epoch.

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Metadata

Authors
Butcher, H., & Oemler, A., Jr.
Venue
The Astrophysical Journal
Published
1978-01
Volume
219
Pages
18
ISSN
  • 0004-637X (ISSN-L)
  • 1538-4357
OpenAlex
W2041335483
Cited by
668
References
0
FWCI
20.80
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: The evolution of galaxies in clusters. I - ISIT photometry of C1 0024+1654 and 3C 295. https://app.cochat.ai/papers/10.1086/155751
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Butcher, H., & Oemler, A., Jr. (1978). The evolution of galaxies in clusters. I - ISIT photometry of C1 0024+1654 and 3C 295. The Astrophysical Journal. https://doi.org/10.1086/155751

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