Confinement models for the Chariklo rings. Top panel: model in which the inner and outer edges of the two rings are held by the same inner and outer shepherd satellite, respectively. Middle panel: satellite confining C1R in its horseshoe region and holding the C2R inner edge, while a shepherd satellite confines the C2R outer edge. Bottom panel: model with the innermost and outermost edges of the system confined by a pair of satellites and the gap maintained by a third satellite. Satellites are shown as dots with colours matching those of the edges they confine, while the grey regions represent the width of the rings (for location and physical radius of the satellites, see Table 3).