Radial velocity dispersion (RVD) profiles for tracers with (the SI sample, top panel); and (the SII sample, bottom panel). The horizontal bars represent the effective radial bin size of the moving average. The vertical bars indicate the spread in the RVD due to the inclusion/exclusion of random subsets of tracers. A detailed description of how these profiles were obtained can be found in Sect. 2.3. As reference values, we show calculated based on the RVD points in Xue et al. (2008) and Deason et al. (2012b) (large gray circles). Note that Leo I was excluded from our analysis. See also the comparison of the profiles in Fig. 4.
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