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Substructures in the Galaxy Clusters in Rich Regions

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Abstract

We present the results of study of the 2D distribution of galaxies in galaxy clusters with redshifts \(z < 0.15\) in rich regions. Our data consists of two sets extracted from “The Catalogue of Galaxy Groups and Clusters” (Panko and Flin). The first data set contains 460 galaxy clusters with richness 100 and more galaxies in the cluster field, the second one contains 112 galaxy clusters belonging to superclusters with multiplicity 5 and more members. The “Cluster Cartography” tool was specially designed for studying the inner structure of galaxy clusters. We detected different kinds of regular substructures, such as crossing and divaricating filaments (X and Y-type peculiarities), curved strips and short compact chains in the galaxy clusters in both our data sets. Founded peculiarities can be considered as a result of the formation of galaxy cluster at the intersection of DM filaments or filament-wall interaction. It is confirmed by the types of alignment of galaxies in the substructures. We also found the alignment of substructures in galaxy supercluster members accordingly to the direction to the nearest neighbor.

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ACKNOWLEDGMENTS

This research has made use of NASA’s Astrophysics Data System.

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Authors and Affiliations

  1. I.I. Mechnikov Odessa National University, Odessa, Ukraine

    E. A. Panko, S. I. Yemelianov, V. M. Korshunov & A. R. Sirginava

Authors
  1. E. A. Panko
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  2. S. I. Yemelianov
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  3. V. M. Korshunov
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  4. A. R. Sirginava
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Corresponding author

Correspondence to E. A. Panko.

Additional information

Paper presented at the Fourth Zeldovich meeting, an international conference in honor of Ya.B. Zeldovich held in Minsk, Belarus, on September 7–11, 2020. Published by the recommendation of the special editors: S.Ya. Kilin, R. Ruffini, and G.V. Vereshchagin.

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Panko, E.A., Yemelianov, S.I., Korshunov, V.M. et al. Substructures in the Galaxy Clusters in Rich Regions. Astron. Rep. 65, 1002–1006 (2021). https://doi.org/10.1134/S1063772921100255

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  • DOI: https://doi.org/10.1134/S1063772921100255

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