Large convection cells as the source of Betelgeuse's extended atmosphere

@article{Lim1998LargeCC,
  title={Large convection cells as the source of Betelgeuse's extended atmosphere},
  author={Jeremy Lim and C. Carilli and S. White and A. Beasley and R. Marson},
  journal={Nature},
  year={1998},
  volume={392},
  pages={575-577}
}
Supergiant stars such as Betelgeuse have very extended atmospheres, the properties of which are poorly understood. Alfvén waves, acoustic waves,, and radial pulsations have all been suggested as likely mechanisms for elevating these atmospheres and driving the massive outflows of gas seen in these stars: such mechanisms would heat the atmosphere from below, and there are indeed observations showing that Betelgeuse's extended atmosphere is hotter than the underlying photosphere,. Here we report… Expand
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