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Fig. 2


Total stellar mass as a function of time for the 15 M models. Each color corresponds to a given combination of wind algorithms (see Table 2). None of these 15 M models reach the WR phase. The solid, dashed, and dot-dashed curves correspond to efficiency η = 0.1, 0.33, 1.0, respectively, regardless of color. The red vertical line indicates roughly the terminal age main sequence (TAMS, i.e., Xc< 0.01). The enhanced mass loss of models using the Vink et al. (2000; 2001; V) algorithm close to TAMS in the left panel is due to the bistability jump, see Sect. 3.2. The left panel has a different vertical scale to magnify the differences in the tracks during the main sequence evolution.

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