Vector PM diagrams for the bright sources (Ks < 15 mag) matched in the 2MASS+Gaia catalogues (right panel), and the fainter sources (Ks > 13 mag) matched in the VVVX+Gaia catalogues (left panel). The black circle indicates the cluster selection, while blue crosses represent the position of the two RR Lyrae found within 10′ of the cluster centre. The colour bars indicate a higher (towards the black colour) and lower (towards the yellow colour) concentration.
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