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Fig. 6


HKS vs. H – [8.0] diagram. This plot shows a clear trend for cool late-type stars separating the YSOs in our sample. The dashed line represents our proposed criterion to separate YSOs and late-type stars. The black arrow represents the extinction vector estimated for AK = 2 mag (typical of the CMZ) using the relations from Nishiyama et al. (2009).

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