Fig. 2.
Colour-magnitude diagrams H vs. J − H (upper panel) and Ks vs. H − Ks (lower panel). The RC is marked by the blue dashed parallelograms. The two blue arrows show a double feature in the RC. The black arrow depicts the reddening vector with an extinction AKs = 0.5 mag (computed using α = 2.30 ± 0.08, Nogueras-Lara et al. 2018a). The insets show the RC region with the two features obtained applying GMM and their uncertainties in cyan (see main text).
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