Abstract
A scenario for the evolution of massive helium burning stars is presented, with special emphasis to the different WR stages. Several conclusions drawn from observations can be reconciled by this scenario, e.g. the high mean mass of WNL stars, the low mean mass of WNE and WC stars, the strange appearance of SN 1961v, and the suggestion that the Cas A progenitor was a WNL star. We conclude that the most massive stars terminate their life as WNL stars, and only less massive stars reach the WC stage during their evolution. Furthermore, we suggest that convective overshooting is an inefficient process in very massive H-burning stars.
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Langer, N. (1987). Evolution of Wolf-Rayet Stars. In: Hillebrandt, W., Kuhfuß, R., Müller, E., Truran, J.W. (eds) Nuclear Astrophysics. Lecture Notes in Physics, vol 287. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0016578
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DOI: https://doi.org/10.1007/BFb0016578
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