The spin rates of O stars in WR + O binaries. I. Motivation, methodology and first results from SALT

  title={The spin rates of O stars in WR + O binaries. I. Motivation, methodology and first results from SALT},
  author={Michael M. Shara and S. M. Crawford and Dany Vanbeveren and Anthony F. J. Moffat and David R. Zurek and Lisa A. Crause},
  journal={arXiv: Solar and Stellar Astrophysics},
The black holes (BH) in merging BH-BH binaries are likely progeny of binary O stars. Their properties, including their spins, will be strongly influenced by the evolution of their progenitor O stars. The remarkable observation that many single O stars spin very rapidly can be explained if they accreted angular momentum from a mass-transferring, O-type or Wolf-Rayet companion before that star blew up as a supernova. To test this prediction, we have measured the spin rates of eight O stars in… Expand
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