Sky map presenting the members of Sco OB2 based on our analysis. Upper panel: the distance (1000/ϖ) of the members against Galactic longitude l. Lower panel: members shown in the Galactic coordinate plane. The subgroup boundaries in de Zeeuw et al. (1999) are marked by the black dashed lines. In both panels, the membership probability is color coded as represented by the color bar. The open cluster IC 2602 is shown as a black diamond; according to our analysis, it is not part of Sco OB2.