V vs. V − I diagram of our targets. Top panel shows the 65  targets classified as candidate weak T Tauri stars, since they were detected in the X-rays, the 21  targets with IR excesses and the five  photometric candidates, selected for the VIMOS observations. Middle panel shows the CMD for the 68 targets, also observed with FLAMES were “M” indicates the 63  confirmed cluster members, “NM” indicates the three  nonmembers and “M?” indicates the two  uncertain members. Bottom panel shows the CMD for the 88  targets classified here as cluster members and the six  classified as nonmembers.