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Fig. 2.

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CMDs Ks versus J − Ks (left panel) and Ks versus H − Ks (right panel) for the target region. The red dashed lines indicate the separation between the foreground population, the MWNSD, and the MWNSC. The blue box in the CMD Ks versus H − Ks shows the reference stars to build the extinction map in Sect. 5.1. The scale bars indicate stellar densities using a power stretch scale.

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