The position of γ Equ in the Hertzsprung-Russell diagram. The constraints on the fundamental parameters are indicated by the 1σ-error box (log T_eff, log (L/L_⊙)) and the diagonal lines (radius). The box in solid lines corresponds to the results derived when ignoring the companion star. The box in dashed lines corresponds to the results derived after subtracting from the total bolometric flux the maximum contribution expected from the companion (see text for details). The box in dotted lines corresponds to the fundamental parameters derived by Kochukhov & Bagnulo (2006) and used by Gruberbauer et al. (2008) in the asteroseismic modelling of γ Equ.