The nature of B supergiants: clues from a steep drop in rotation rates at 22 000 K. The possibility of bi-stability braking

@inproceedings{Vink2010TheNO,
  title={The nature of B supergiants: clues from a steep drop in rotation rates at 22 000 K. The possibility of bi-stability braking},
  author={Jorick S Vink and Ines Brott and G{\"o}tz Gr{\"a}fener and Norbert Langer and Alex de Koter and Daniel J. Lennon},
  year={2010}
}
The location of B supergiants in the Hertzsprung-Russell di agram (HRD) represents a long-standing problem in massive star evolution. Here we propose their nature may be r evealed utilising their rotational properties, and we high light a steep drop in massive star rotation rates at an e ffective temperature of 22 000 K. We discuss two potential expl anations for it. On the one hand, the feature might be due to the end of the main seq uence, which could potentially constrain the core overshoo… CONTINUE READING

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