The environmental effects in the origin of angular momenta of galaxies

TL;DR

This study investigates how the environment influences galaxy angular momentum origins by analyzing galaxy alignments in rich clusters inside and outside superclusters, revealing environmental effects on galaxy orientation.

Contribution

It provides new insights into environmental impacts on galaxy angular momentum, highlighting differences in alignment related to supercluster membership and richness.

Findings

Galaxy alignments are not random in studied clusters.

Alignment increases with cluster richness outside superclusters.

Alignment decreases with supercluster richness inside superclusters.

Abstract

We study the galaxy alignment in the sample of very rich Abell clusters located in and outside superclusters. The statistically significant difference among investigated samples exists. We found that in contrast to whole sample of cluster, where alignment increase with the cluster richness, the cluster belonging to the superclusters does not show this effect. Moreover, the alignment decreased with the supercluster richness. One should note however that orientations of galaxies in analyzed clusters are not random, both in the case when we analyzed whole sample of the clusters and only clusters belonging to the superclusters. The observed trend, dependence of galaxy alignment on both cluster location and supercluster richness clearly supports the influence of environmental effects to the origin of galaxy angular momenta.