Chemical abundances of fast-rotating massive stars - II. Interpretation and comparison with evolutionary models
Chemical abundances of fast-rotating massive stars - II. Interpretation and comparison with evolutionary models
Aims. Past observations of fast-rotating massive stars exhibiting normal nitrogen abundances at their surface have raised questions about the rotational mixing paradigm. We revisit this question thanks to a spectroscopic analysis of a sample of bright fast-rotating OB stars, with the goal of quantifying the efficiency of rotational mixing at …