Temporal Evolution of the Size and Temperature of Betelgeuse's Extended Atmosphere

@article{OGorman2015TemporalEO,
  title={Temporal Evolution of the Size and Temperature of Betelgeuse's Extended Atmosphere},
  author={E. O'Gorman and G. Harper and Alexander Brown and E. Guinan and A. Richards and W. Vlemmings and R. Wasatonic},
  journal={Astronomy and Astrophysics},
  year={2015},
  volume={580}
}
Spatially resolved multi-wavelength centimeter continuum observations of cool evolved stars can not only constrain the morphology of the radio emitting regions, but can also directly probe the mean gas temperature at various depths of the star's extended atmosphere. Here, we use the Very Large Array (VLA) in the A configuration with the Pie Town (PT) Very Long Baseline Array (VLBA) antenna to spatially resolve the extended atmosphere of Betelgeuse over multiple epochs at 0.7, 1.3, 2.0, 3.5, and… Expand
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