Fig. 4
H-R diagram with the theoretical evolutionary tracks for 9, 12, 15, 20, and 25 M⊙ stars for Z = 0.014 without rotation (solid lines) from Ekström et al. (2012) and the observationally derived position of Antares (filled diamond with error bars). For the 15 and 9 M⊙ stars, the evolutionary tracks with rotation are plotted by the dashed lines.
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