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Fig. 1


Evolution of a M2,i = 0.75 M secondary accreting ΔM = 0.05 M of material from a primary with initial mass M1 = 1.25 M. Tracks distinguish different specific angular momentum of the accreted material. The numbers on top of the ja = 2 × 1017 cm2s-1 track mark the beginning of mass transfer (1), end of mass transfer (2), return to the main sequence (3), main sequence turn-off (4), beginning of first dredge-up (5), end of first dredge-up (6). The dashed part of the ja = 7 × 1017 cm2s-1 track marks the phase of the evolution where the star is formally above critical rotation (see text).

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