Issue |
EAS Publications Series
Volume 60, 2013
Betelgeuse Workshop 2012 The Physics of Red Supergiants: Recent Advances and Open Questions
|
|
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Page(s) | 145 - 153 | |
Section | Atmospheric Structure and Dynamics | |
DOI | https://doi.org/10.1051/eas/1360016 | |
Published online | 23 May 2013 |
P. Kervella, T. Le Bertre and G. Perrin (eds)
EAS Publications Series, 60 (2013) 145-153
3D hydrodynamical simulations to interpret observations of stellar surfaces of red supergiant stars
1
Laboratoire Lagrange, UMR 7293, Université de Nice
Sophia-Antipolis, CNRS, Observatoire de la Côte d’Azur, BP. 4229, 06304
Nice Cedex 4,
France
2
Centre de Recherche Astrophysique de Lyon, UMR 5574, CNRS,
Université de Lyon, École Normale Supérieure de Lyon, 46 allée d’Italie, 69364
Lyon Cedex 07,
France
3
Laboratoire Univers et Particules de Montpellier, Université
Montpellier II, CNRS, 34095
Montpellier Cedex 05,
France
As red supergiants are the largest and brightest stars, they are ideal targets for the new generation of sensitive, high resolution instrumentation that provides spectrophotometric, interferometric, astrometric, and imaging observables. The interpretation of the complex stellar surface images requires numerical simulations of stellar convection that take into account multi-dimensional time-dependent radiation hydrodynamics with realistic input physics. We show the results obtained with the synergy between the radiative hydrodynamics code CO5BOLD and the post-processing radiative transfer code Optim3D. Such simulations support a proper and quantitative analysis of these observations, and the observations provide the theoretical work with strong constraints.
© EAS, EDP Sciences 2013