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Fig. 7.
VVV near-IR (left panel) and Gaia DR 2 optical (right panel) PM-decontaminated CMD for the GC Patchick 99. The red dotted line is fitted by a PARSEC isochrone with age 10 Gyr and metallicity [Fe/H]= − 0.2 dex. The magenta points represent the position of RR Lyrae star members in the near-IR CMD.
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