Top: shape of the stellar surface in the equilibrium configuration (case 065); black/white color coding corresponds to the minimum/maximum radius; the map is centered on 180° longitude. The asymmetry in the tidal bulges stems from the fact that the orbital separation is small compared to the radius of m₁. Bottom: the radius as a function of longitude at the equator. All the 40 orbital phases for which it was computed are plotted, showing that no surface perturbations are present in this calculation.