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Insights into Wolf-Rayet WC9 stars from spectroscopy

  • Philippe Eenens (a1) and Luis J. Corral (a2)

Abstract

We present new spectroscopic observations of WC9 stars. As predicted by Williams & van der Hucht (2000), O ii lines are weak in the dust-free star WR88, which also shows a high ionization. Spectral variability is detected in WR 106 and WR 121. These findings are briefly discussed in terms of the conditions for dust formation in Wolf-Rayet winds.

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References

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Crowther, P.A. 1997, MNRAS 290, L59.
Eenens, P.R.J., Williams, P.M. 1994, MNRAS 269, 1082.
Kato, T., Haseda, K., Yamaoka, H., Takamizawa, K. 2002a, PASJ (Letters) 54, L51.
Kato, T., Haseda, K., Takamizawa, K., Yamaoka, H. 2002b, A&A (Letters) 393, L69.
Veen, P.M., van Genderen, A.M., van der Hucht, K.A., et al. 1998, A&A 329, 199.
Williams, P.M., van der Hucht, K.A. 2000, MNRAS 314, 23.

Insights into Wolf-Rayet WC9 stars from spectroscopy

  • Philippe Eenens (a1) and Luis J. Corral (a2)

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