Modeling the Variable Chromosphere of α Orionis

@article{Lobel2000ModelingTV,
  title={Modeling the Variable Chromosphere of $\alpha$ Orionis},
  author={A. Lobel and A. Dupree},
  journal={The Astrophysical Journal},
  year={2000},
  volume={545},
  pages={454-474}
}
A spectral analysis of the prototypical red supergiant star a Ori that is based on near-UV, optical, and near-IR high-dispersion spectra obtained between 1992 September and 1999 July with the Space Tele- scope Imaging Spectrograph and the Goddard High Resolution Spectrograph on the Hubble Space Telescope, the Utrecht Echelle Spectrograph, and the SoFin Echelle Spectrograph is presented. With detailed non-LTE radiative transfer calculations in spherical geometry, we model the mean conditions in… Expand
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