Subset of the infrared and optical-infrared diagrams of all sources in the studied field that meet the criteria of good photometry (e.g., error in magnitude smaller than 0.1^m and in color smaller than 0.15^m). The dashed lines show the isochrones for ages 0.5 Myr, 1.5 Myr, 3 Myr, 5 Myr, 8 Myr, and 10 Myr, and with metallicity Z = 0.004 (Delgado et al. 2010) from the PARSEC models, plotted adopting a distance of 4.5 kpc and A_V = 2.7^m. Red dots mark the selected stars with a disk that we retained in the final list. We also show the loci defined to select stars with a disk and contaminants, delimited by red and green lines. In particular, we show the loci expected to be populated by giants, stars with unreliable excesses, foreground stars, and YSOs with a disk in these diagrams. All diagrams are shown in Appendix D.