Color − magnitude diagram of all HAWK-I sources with NIR excesses. The solid lines show isochrones for ages of 1 Myr (red), 3 Myr (green), 10 Myr (blue), and the ZAMS composed from the models of Baraffe et al. (1998) for the mass range 0.02 to 0.5 M_⊙ and Siess et al. (2000) for the mass range 0.5 to 7 M_⊙. The large solid dots mark the positions of 1 M_⊙ stars, the asterisks those of 0.075 M_⊙ objects on the 1, 3, and 10 Myr isochrones. The arrows indicate reddening vectors for A_V = 10 mag and were computed for an extinction law with R_V = 4 (see Povich et al. 2011b). The dashed green line shows the 3 Myr isochrone reddened by that amount. Note that all bright objects with J < 12.5 are in the saturation/non-linearity regime of the HAWK-I data and their photometry is therefore unreliable.