Temperature structure of the atmosphere of the irradiated dM secondary star in the AA Dor system. The three irradiated zones for θ = 10°, 35°, and 80° are shown together with the structure of the unperturbed dM on the night side. The irradiated zones show several temperature inversion regions and an extension of the atmosphere. The photospheres are progressively higher and hotter toward the substellar point with respect to the dark side, as indicated by the arrows at τ_Ross = 0.66.