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| Paper: |
3D Hydrodynamical Simulations of Evolved Stars and Observations of Stellar Surfaces |
| Volume: |
497, Why Galaxies Care about AGB Stars III: A Closer Look in Space and Time |
| Page: |
11 |
| Authors: |
Chiavassa, A.; Freytag, B. |
| Abstract: |
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. |
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