Multiple ring nebulae around blue supergiants

  title={Multiple ring nebulae around blue supergiants},
  author={S. M. Chita and Norbert Langer and A. J. van Marle and Guillermo Garc{\'i}a-Segura and Alexander Heger},
  journal={Astronomy and Astrophysics},
Context. In the course of the life of a massive star, wind-wind interaction can give rise to the formation of circumstellar nebulae which are both predicted and observed in nature. Aims. We present generic model calculations to predict the properties of such nebulae for blue supergiants. Methods. From stellar evolution calculations including rotation, we obtain the time dependence of the stellar wind properties and of the stellar radiation field. These are used as input for hydro-calculations… 

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