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Fig. 4


CNO content of the winds of rotating massive stars from the Geneva group. In all panels, yields are for stars of 120 M (thick dotted), 80 M (thick dashed), 60 M (thick solid), 40 M (thin solid), 25 M (thin dashed) and 15 M (thin dotted). The curves connect yields that are provided at three values of the metallicity Z (Z = 10-8, 10-5, 0.02). The thick dots correspond to yields averaged over a Salpeter IMF; average values depend little on metallicity, because they are always dominated by the extremely high yields of the most massive stars.

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