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Astron. Astrophys. 351, 883-892 (1999)

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Investigation of subclustering in 18 rich clusters of galaxies using wavelet analysis

J. Krywult 1, H.T. MacGillivray 2 and P. Flin 1

1 Pedagogical University, Institute of Physics, ul. M.Konopnickiej 15, 25-409 Kielce, Poland
2 Royal Observatory Edinburgh, Blackford Hill, Edinburgh EH9 3HJ, UK

Received 30 May 1999 / Accepted 1 September 1999

Abstract

The method based on the wavelet transform has been applied to positions of galaxies in 18 rich Abell clusters in a search for the presence of subclustering. This study has shown that substructures are present in about 50% of cases. If our result is applicable generally to clusters (as other studies also indicate), then we conclude that subclustering is an important feature of cluster structure and hence of evolution.

Key words: galaxies: clusters: general

Send offprint requests to: J. Krywult

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© European Southern Observatory (ESO) 1999

Online publication: November 16, 1999
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