On the nature of WO stars: a quantitative analysis of the WO3 star DR1 in IC 1613 ?

@article{Tramper2013OnTN,
  title={On the nature of WO stars: a quantitative analysis of the WO3 star DR1 in IC 1613 ?},
  author={Frank Tramper and Gotz Grafener and Olga E. Hartoog and Hugues Sana and Alex de Koter and Jacco Vink and Lucas E. Ellerbroek and Norbert Langer and M. Garcia and Lex Kaper and Selma E. de Mink},
  journal={Astronomy and Astrophysics},
  year={2013},
  volume={559}
}
Context. Oxygen sequence Wolf-Rayet (WO) stars are thought to represent the final evolutionary stage of the most massive stars. The characteristic strong Ovi emission possibly originates from an enhanced oxygen abundance in the stellar wind. Alternatively, the Ovi emission can be caused by the high temperature of these stars, in which case the WO stars are the high-temperature extension of the more common carbon sequence Wolf-Rayet (WC) stars. Aims. By constraining the physical properties and… 

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