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Fig. 4

image

Our semi-empirical determinations of αov as a function of stellar mass, compared with published prescriptions. Symbols are as in Fig. 2, with sizes drawn here proportional to the surface gravity log g of each star. Top: mass dependence of αov adopted in some recent grids of stellar evolution models. Bottom: comparison with previous semi-empirical relationships by Ribas et al. (2000) and Claret (2007).

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