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2011•Astronomy and AstrophysicsOpen access

The close circumstellar environment of Betelgeuse

P. Kervella, Guy S. Perrin, A. Chiavassa, S. T. Ridgway, J. Cami, X. Haubois, Tijl Verhoelst

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Abstract

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.

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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.

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Available abstract

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.

Key concepts: Red supergiant, Supergiant, Physics, Context (archaeology), Astrophysics, Angular resolution (graph drawing), Interstellar medium, Cosmic dust

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