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On the distribution of galaxy ellipticity in clusters

D'Eugenio, Francesco; Houghton, Ryan C W; Davies, Rebecca; Dalla Bonta, E


We study the distribution of projected ellipticity n(ϵ) for galaxies in a sample of 20 rich (Richness ≥ 2) nearby (z < 0.1) clusters of galaxies. We find no evidence of differences in n(ϵ), although the nearest cluster in the sample (the Coma Cluster) is the largest outlier (P(same) < 0.05). We then study n(ϵ) within the clusters, and find that ϵ increases with projected cluster-centric radius R (hereafter the ϵ-R relation). This trend is preserved at fixed magnitude, showing that this relation...[Show more]

CollectionsANU Research Publications
Date published: 2015
Type: Journal article
Source: Monthly Notices of the Royal Astronomical Society
DOI: 10.1093/mnras/stv987
Access Rights: Open Access


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