| 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) | 237 - 242 | |
| Section | Circumstellar Environments | |
| DOI | https://doi.org/10.1051/eas/1571053 | |
| Published online | 01 December 2015 | |
E. Lagadec, F. Millour and T. Lanz (eds)
EAS Publications Series, 71–72 (2015) 237-242
Pathways for Observing Stellar Surfaces Using 3D Hydrodynamical Simulations of Evolved Stars
1 Laboratoire Lagrange, Université Côte d*Azur, Observatoire de la Côte d*Azur, CNRS, Bd. de l*Observatoire, CS 34229, 06304 Nice Cedex 4, France
2 Astronomical Observatory, Uppsala University, Regementsvägen 1, Box 516, 75120 Uppsala, Sweden
Evolved stars are among the largest and brightest stars and 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 how the evolved star simulations are obtained using the radiative hydrodynamics code CO5BOLD and how the accurate observables are computed with the post-processing radiative transfer code Optim3D. The synergy between observations and theoretical work is supported by a proper and quantitative analysis using these simulations, and by strong constraints from the observational side.
© EAS, EDP Sciences, 2015