HI gas, environment, and SF-quenching in the Abell clusters A85/A496/A2670

TL;DR

This study investigates how the environment within three Abell galaxy clusters influences the neutral hydrogen content and star formation activity of spiral galaxies, revealing significant environmental effects on galaxy evolution.

Contribution

It provides a comparative analysis of HI properties across three clusters, highlighting the impact of large-scale structure and cluster dynamics on galaxy gas content and star formation.

Findings

Significant differences in HI properties among the clusters

Environmental effects influence star formation quenching

Dynamical state of clusters correlates with galaxy gas content

Abstract

We study complete sample of spiral galaxies brighter than M$_{\mathrm{B}} \sim$-18.4 in three Abell clusters: A85 ($z=\,$0.055), A496 ($z=\,$0.033) and A2670 ($z=\,$0.076). This work is based on a large volume limited, blind Hi-survey (21cm, NRAO-VLA), on optical imaging (CFHT) and on the search for dynamical substructures. Our goal is to explore the effects of local environment on the HI gas properties and this, in turn, on the star formation activity and quenching of individual galaxies. We report significant differences among the HI properties of these clusters and we discuss the role played by the large scale structure and by the dynamical evolution of each cluster accounting for the observational evidence.