Fig. 1
Gravity-darkening exponent for a 4 M⊙ model. Continuous thick line refers to grey calculation (τg = 80), continuous thin (the same but for τg = 5), dashed (the same but for τg = 1). The dashed-dotted line indicates computations by using the ATLAS atmosphere model at τA = 35 and the dotted line, the same but for τA = 1.0. The error bars denote the location of α Leo.
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