Top panel: CMD M1 vs K_s − M1. Bottom panel: CCD H − K_s vs K_s − M1. Left panel: selection of YSOs inside the IRAC coverage, showing the recovered sources (disks – blue, protostars – red). Yellow filled diamonds are new YSO candidates and the black crosses are contaminates or uncertain sources. Right panel: selected new YSO candidates outside the IRAC region (open blue diamonds). The extinction vector is shown for both diagrams in red with a length of A_K = 2 mag. The black solid lines represent cuts to exclude MS stars, and the black dashed lines exclude extra-galactic sources.