Fig. 15.
Vector PM diagram for all bulge RR Lyrae stars from the OGLE, VVV, and Gaia catalogues located within 10′ of the cluster centre. The scale is the same as in Fig. 9, and the RR Lyrae are colour-coded with distance from the GC centre, with the darkest objects being closer to the centre and the lighter ones being farther away. The black circle is centred on the mean GC PM for comparison.
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