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Fig. 17
Theoretical evolution of velocity ratios V∕Vcrit in the MS calculated by Ekström et al. (2008) with mass-loss rates Ṁ(EMMB) (full lines) and Ṁ(VdKL) (dashed lines) for M = 3, 9, and 20M⊙. The vertical dotted lines near the ZAMS indicate the fractional age t∕tMS to which correspond the adopted ZAMS velocity ratios VZAMS∕Vc.
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