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Fig. 5

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Variation of the line-of-sight velocity dispersion, in the cluster rest frame, with the cluster-centric distance. The cluster centre is assumed to be the BCG position. The velocity dispersion values are computed using the bi-weight estimator and considering all galaxy members enclosed in that radius. The first value is calculated from the first five galaxies closest to the centre. The error bars are at the 68% confidence level.

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