Imaging the spotty surface of Betelgeuse in the H band

@article{Haubois2009ImagingTS,
  title={Imaging the spotty surface of Betelgeuse in the H band},
  author={X. Haubois and Guy Perrin and Sylvestre Lacour and Tijl Verhoelst and Serge Meimon and Laurent M. Mugnier and {\'E}ric Thi{\'e}baut and J. P. Berger and Stephen T. Ridgway and John D. Monnier and Rafael Millan-Gabet and Wesley A. Traub},
  journal={Astronomy and Astrophysics},
  year={2009},
  volume={508},
  pages={923-932}
}
Aims. This paper reports on H-band interferometric observations of Betelgeuse made at the three-telescope interferometer IOTA. We image Betelgeuse and its asymmetries to understand the spatial variation of the photosphere, including its diameter, limb darkening, effective temperature, surrounding brightness, and bright (or dark) star spots. Methods. We used different theoretical simulations of the photosphere and dusty environment to model the visibility data. We made images with parametric… 
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