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Fig. 9
Panel a): (J − K) versus (H − K) diagram of stars with 12.5 <K< 11 mag and 0.8 <J − K< 1.3 mag in the cl49.3 field. The dashed lines show the locus of a M1 and an O9 star for increasing AKs. Panel b): map of the blue stars (diamonds), along with the detected RSGs (squares) and field stars (dots).
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