A Spatially Resolved, Semiempirical Model for the Extended Atmosphere of α Orionis (M2 Iab)

@article{Harper2001ASR,
  title={A Spatially Resolved, Semiempirical Model for the Extended Atmosphere of $\alpha$ Orionis (M2 Iab)},
  author={G. Harper and Alexander Brown and Jeremy Lim},
  journal={The Astrophysical Journal},
  year={2001},
  volume={551},
  pages={1073-1098}
}
We have constructed a detailed mean density and temperature model for the extended outer atmosphere of the O-rich supergiant Betelgeuse (??Ori [M2 Iab]), which extends from 1.0 to 10.0 stellar radii. A one-dimensional model is based on fitting NRAO VLA centimeter visibility data, and two-dimensional models are constructed using the intensity contours of the 0.7 cm observations of Lim et al. As one moves in toward the star from about 10 R* the mean electron temperature increases to a value of… Expand
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