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The close circumstellar environment of Betelgeuse-Adaptive optics spectro-imaging in the near-IR with VLT/NACO

Authors
  • Pierre, Kervella
  • Tijl, Verhoelst
  • Stephen T, Ridgway
  • Guy, Perrin
  • Sylvestre, Lacour
  • Jan Cami
  • Xavier, Haubois
Type
Published Article
Journal
ScienceOpen Astronomy & Astrophysics
Publisher
ScienceOpen
Publication Date
Aug 31, 2009
Volume
504
Issue
1
Pages
115–125
Source
SETI Institute
License
Unknown

Abstract

Context. Betelgeuse is one the largest stars in the sky in terms of angular diameter. Structures on the stellar photosphere have been detected in the visible and near-infrared as well as a compact molecular environment called the MOLsphere. Mid-infrared observations have revealed the nature of some of the molecules in the MOLsphere, some being the precursor of dust. Aims. Betelgeuse is an excellent candidate to understand the process of mass loss in red supergiants. Using diffraction-limited adaptive optics (AO) in the near- ...

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