Curvilinear heliocentric (ξ′, η′) projection (top) and (ξ′, ζ′) (bottom), colour-coded as a function of time, of the orbits of the centroids of the associations considered in this study (Table 1). The panels on the right are a zoom of the panels on the left, removing the Octans, Argus, and AB Dorassociations (see text). The larger dots mark the region where the associations are formed according to our dynamical age determination ranges from Table 3.