The complex lives of Open Clusters: Extended halo of NGC 2682 (M 67)

The internal collisional dynamics and external interactions are so effective that Open Clusters would be dissolved on a timescale of 1 Gyr. Although they are a minority systems older than 1 Gyr are key to investigate the dynamical evolution of stellar clusters. NGC 2682 (M 67) is one of the nearest old OCs (3.6 Gyr) and is located at about 860 pc from the Sun. Evidence of substantial dynamical evolution in this cluster has been reported previously such as mass segregation. Using Gaia DR2 we investigate the spatial distribution of the stars in NGC 2682 to constrain its focus on the marginally bound stars in the cluster outskirts.