Helium Stars: Towards an Understanding of Wolf-Rayet Evolution

  title={Helium Stars: Towards an Understanding of Wolf-Rayet Evolution},
  author={L. A. S. McClelland and Jan J. Eldridge},
  journal={Monthly Notices of the Royal Astronomical Society},
Wolf-Rayet (WR) stars are massive stars that have lost most or all of their hydrogen via powerful stellar winds. Recent observations have indicated that hydrogen-free WR stars have cooler temperatures than those predicted by current evolutionary models. To investigate how varying mass-loss rate affects WR evolution, we have created a grid of pure helium star models. We compare our results with Galactic and LMC WR observations and show that the temperature ranges of observed WR stars can be… 

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