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Fig. 11

image

Surface lithium abundance for the representative model of KIC 9163796, with different scenarios of rotation history as function of the stellar effective temperature. The primary and secondary are marked as dot and diamond respectively. The solid (black) line represent the non-rotating model and the solid-body rotating ones, the dotted (red) line represents a differentially rotating model with very efficient turbulent mixing (νh prescription from Zahn 1992), the short-dashed (green) line represents a similar model using a different prescription for turbulent shear (νh prescription from Mathis et al. 2004), the long-dashed (blue) line represents a model similar to the previous one but slowly rotating on the ZAMS and the dashed-dotted (cyan) line represents a model computed assuming solid-body rotation on the main sequence and differential rotation beyond the TAMS. The two components of KIC 9163796 are shown using the same symbols as in previous figures.

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