Fig. 16

Radial stratification of oxygen ionization fractions, as a function of τRoss, for an S40 model with fX = 0.03 and = 3 × 106 K. Auger ionization notably affects the presence of O vi in the outer wind (
corresponding to
4 R∗ or
0.7 v∞). The model without Auger ionization has more O v than O vi and vice versa when the effect is included.
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