Omega2000 J−H/H−K_S diagram for 3435 sources with errors <0.06 mag in all bands (black dots). The empirical reddening vector (dashed line) has a slope of 1.97. We have overlaid the positions of known Class Is (red squares), Class IIs (green circles), and the stars A, B and C (blue stars). The nine new YSO candidates (magenta triangles) are sources with K-band excess not already extracted using the previous two CC diagrams.