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Fig. 5.

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Observed line-of-sight velocity dispersions of the BCG and of the cluster (shown as black points), traced by member galaxies, for MACS 1206 (left) and Abell S1063 (right). The errorbars correspond to 1σ uncertainties. The red curves and shaded regions represent the best fit profile in RG, and its 1σ uncertainties, compared to the Newtonian results (blue shaded bands) of B23 and S20, respectively.

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