Fig. 2
(J − K)–MK diagram for non-stellar objects with photometric errors <0
1 in NGC 2997. Evolutionary tracks for clusters with a mass of 5 × 105 M⊙ and a “screen” reddening vector are shown. The symbols indicate the k-means clustering number while colors display the reddening-corrected color index Qs = (H − K) − 0.564 × (J − H).
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