VVV observed (J−H) vs. (H−KS) color−color diagram. Only stars with photometric errors <0.05 are plotted. The lines represent the sequence of zero-reddening stars of luminosity class i (Koornneef 1983) and v (Schmidt-Kaler 1982). The reddening vector for AV = 15 mag is overplotted, and the dotted lines are parallel to the standard reddening vector.
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