The Wolf-Rayet Content of M31

@article{Neugent2012TheWC,
  title={The Wolf-Rayet Content of M31},
  author={K. Neugent and P. Massey and C. Georgy},
  journal={The Astrophysical Journal},
  year={2012},
  volume={759},
  pages={11}
}
Wolf-Rayet (WR) stars are evolved massive stars, and the relative number of WC-type and WN-type WRs should vary with the metallicity of the host galaxy, providing a sensitive test of stellar evolutionary theory. However, past studies of the WR content of M31 have been biased toward detecting WC stars, as their emission-line signatures are much stronger than those of WNs. Here, we present the results of a survey covering all of M31's optical disk (2.2 deg2), with sufficient sensitivity to detect… Expand
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