Spatially resolving the inhomogeneous structure of the dynamical atmosphere of Betelgeuse with VLTI/AMBER

@article{Ohnaka2009SpatiallyRT,
  title={Spatially resolving the inhomogeneous structure of the dynamical atmosphere of Betelgeuse with VLTI/AMBER},
  author={Keiichi Ohnaka and K. H. Hofmann and Myriam Benisty and Alain E. Chelli and Thomas Driebe and F. Millour and Romain G. Petrov and Dieter Schertl and P. Stee and Farrokh Vakili and Gerd Weigelt},
  journal={Astronomy and Astrophysics},
  year={2009},
  volume={503},
  pages={183-195}
}
Context. Aims. We present spatially resolved high-spectral resolution K-band observations of the red supergiant Betelgeuse (α Ori) using AMBER at the Very Large Telescope Interferometer (VLTI). Our aim is to probe inhomogeneous structures in the dynamical atmosphere of Betelgeuse. Methods. Betelgeuse was observed in the wavelength range between 2.28 and 2.31� m with VLTI/AMBER using baselines of 16, 32, and 48 m. The spectral resolutions of 4800‐12000 allow us to study inhomogeneities seen in… 

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