| Issue |
EAS Publications Series
Volume 71-72, 2015
The Physics of Evolved Stars: A Conference Dedicated to the Memory of Olivier Chesneau
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|---|---|---|
| Page(s) | 243 - 247 | |
| Section | Circumstellar Environments | |
| DOI | https://doi.org/10.1051/eas/1571054 | |
| Published online | 01 December 2015 | |
E. Lagadec, F. Millour and T. Lanz (eds)
EAS Publications Series, 71–72 (2015) 243-247
The Convection of Close Red Supergiant Stars Observed With Near-Infrared Interferometry
1 Institut de Radioastronomie Millimétrique, 300 rue de la Piscine, 38406 Saint Martin d*Hères, France
2 LESIA, Observatoire de Paris, PSL Research University, CNRS UMR 8109, UPMC, Université Paris Diderot, France
3 Unidad Mixta Internacional Franco-Chilena de Astronomía, UMI 3386, CNRS/INSU, France & Departamento de Astronomía, Universidad de Chile
4 Laboratoire Lagrange, Université Côte d*Azur, Observatoire de la Côte d*Azur, CNRS, France
5 Université de Toulouse, UPS-OMP, Institut de Recherche en Astrophysique et Planétologie, Toulouse, France
Our team has obtained observations of the photosphere of the two closest red supergiant stars Betelgeuse (α Ori) and Antares (α Sco) using near infrared interferometry. We have been monitoring the photosphere of Betelgeuse with the VLTI/PIONIER instrument for three years. On Antares, we obtained an unprecedented sampling of the visibility function. These data allow us to probe the convective photosphere of massive evolved stars.
© EAS, EDP Sciences, 2015