Fig. 6
a) H − Ks vs. H − [3.6] and b) H − Ks vs. H − [4.5] color–color diagrams. The solid lines show the intrinsic colors of diskless stars. The dashed lines and arrows present the extinction laws. The lengths of arrows show a extinction of 2 mag at K band. The open diamonds are the YSO candidates which show excess emission in both [3.6] and [4.5] bands.
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