New views of Betelgeuse: multi‐wavelength surface imaging and implications for models of hotspot generation

@article{Young2000NewVO,
  title={New views of Betelgeuse: multi‐wavelength surface imaging and implications for models of hotspot generation},
  author={John S. Young and J. Baldwin and R. Boysen and C. Haniff and P. Lawson and C. Mackay and D. Pearson and J. Rogers and D. St-Jacques and P. Warner and Donald M. A. Wilson and Richard W. Wilson},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2000},
  volume={315},
  pages={635-645}
}
ABSTRA C T We report contemporaneous multi-wavelength interferometric imaging of the red supergiant star Betelgeuse (a Orionis), using the Cambridge Optical Aperture Synthesis Telescope (COAST) and the William Herschel Telescope (WHT), at wavelengths of 700, 905 and 1290 nm. We find a strong variation in the apparent symmetry of the stellar brightness distribution as a function of wavelength. At 700 nm the star is highly asymmetric, and can be modelled as the superposition of three bright spots… Expand
Imaging the spotty surface of Betelgeuse in the H band
Direct imaging with a hypertelescope of red supergiant stellar surfaces
The outer atmosphere of the M-type supergiant α Orionis: K I 7699 Å emission
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