The close circumstellar environment of Betelgeuse - II. Diffraction-limited spectro-imaging from 7.76 to 19.50 μm with VLT/VISIR

@article{Kervella2011TheCC,
  title={The close circumstellar environment of Betelgeuse - II. Diffraction-limited spectro-imaging from 7.76 to 19.50 $\mu$m with VLT/VISIR},
  author={Pierre Kervella and Guy Perrin and Andrea Chiavassa and Stephen T. Ridgway and Jan Cami and X. Haubois and Tijl Verhoelst},
  journal={Astronomy and Astrophysics},
  year={2011},
  volume={531}
}
Context. Mass-loss occurring in red supergiants (RSGs) is a major contributor to the enrichment of the interstellar medium in dust and molecules. The physical mechanism of this mass loss is however relatively poorly known. Betelgeuse is the nearest RSG, and as such a prime object for high angular resolution observations of its surface (by interferometry) and close circumstellar environment. Aims. The goal of our program is to understand how the material expelled from Betelgeuse is transported… 
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