Abell radius for clusters

Abell radius for clusters - Abell radius for clusters about...

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Abell radius for clusters, about 1.6 Mpc for a Virgo distance of 16 Mpc. This suggests removal of the gas for those galaxies that come close to the dense core. A further suggestive correlation exists between the fraction of H I - deficient galaxies in a cluster and its hot gas content, measured through its X-ray luminosity (Giovanelli and Haynes 1985 ApJ 292, 404, reproduced courtesy of the AAS): There is some ambiguity here as to whether this relation is necessarily telling us about the rate of stripping, since there is a strong correlation between overall cluster richness and L x . Such global results do not tell how gas is removed, or whether all kinds of ISM are equally vulnerable. A spectacular result was obtained by Cayatte et al. 1990 (AJ 100, 604), who mapped the whole Virgo Cluster core in H I - it is the outer disks that are missing in stripped spirals.
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Their whole cluster map is shown here, where each galaxy has been magnified 5 times for ease of comparison (courtesy AAS): Chung et al. have produced a higher-quality version , with wider coverage as well:
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