The Photospheric Temperatures of Betelgeuse during the Great Dimming of 2019/2020: No New Dust Required

@article{Harper2020ThePT,
  title={The Photospheric Temperatures of Betelgeuse during the Great Dimming of 2019/2020: No New Dust Required},
  author={G. Harper and Edward F Guinan Richard Wasatonic and Nils Ryde University of Colorado Boulder and Villanova University and L. University},
  journal={arXiv: Solar and Stellar Astrophysics},
  year={2020}
}
The processes that shape the extended atmospheres of red supergiants (RSGs), heat their chromospheres, create molecular reservoirs, drive mass loss, and create dust remain poorly understood. Betelgeuse's V-band "Great Dimming" event of 2019 September /2020 February and its subsequent rapid brightening provides a rare opportunity to study these phenomena. Two different explanations have emerged to explain the dimming; new dust appeared in our line of sight attenuating the photospheric light, or… Expand

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