Blueshifted galaxies in the Virgo Cluster

TL;DR

This study analyzes 65 blueshifted galaxies in the Virgo cluster, revealing their asymmetric distribution and suggesting infall dynamics or cosmic void influence as possible explanations.

Contribution

It provides new insights into the spatial distribution and potential dynamics of blueshifted galaxies within the Virgo cluster.

Findings

Blueshifted galaxies are compactly clustered within a 6° virial zone.

The centroid of these galaxies is displaced from M87 by 1.1° northwest.

Asymmetry may be due to galaxy infall or cosmic void effects.

Abstract

We examine a sample of 65 galaxies in the Virgo cluster with negative radial velocities relative to the Local Group. Some features of this sample are pointed out. All of these objects are positioned compactly within a virial zone of radius 6{\deg} in the cluster, but their centroid is displaced relative to the dynamic center of the cluster, M87, by 1.1{\deg} to the northwest. The dwarf galaxies in this sample are clumped on a scale of ~10' (50 kpc). The observed asymmetry in the distribution of the blueshifted galaxies may be caused by infall of a group of galaxies around M86 onto the main body of the cluster. We offer another attempt to explain this phenomenon, assuming a mutual tangential velocity of ~300 km/s between the Local Group and the Virgo cluster owing to their being repelled from the local cosmological void.