Photometric diagrams for the stars in the DBS 77 + VVV 16 region and their corresponding comparison field (panel f)). Squares and circles represent stars with and without known spectral classification, respectively. Light gray symbols indicate a field population whereas blue and red represent different cluster populations selected by our photometric method (see text in Sect. 3.4). The solid (red) and dotted (green) curves are the ZAMS or MS (see text) shifted according to the distance modulus adopted with and without absorption/reddening, respectively. Dashed (red) lines indicate the normal reddening path (R_V = 3.1). Dashed curves are Siess et al. (2000) isochrones for z = 0.02.