| Issue |
EAS Publications Series
Volume 63, 2013
New Advances in Stellar Physics: From Microscopic to Macroscopic Processes
|
|
|---|---|---|
| Page(s) | 367 - 371 | |
| Section | Global Modelling of Stars | |
| DOI | https://doi.org/10.1051/eas/1363041 | |
| Published online | 19 December 2013 | |
G. Alecian, Y. Lebreton, O. Richard and G. Vauclair (eds)
EAS Publications Series, 63 (2013) 367–371
The Stagger-grid: A Grid of 3D Stellar Atmosphere Models
1 Max-Planck-Institut für Astrophysik, Karl-Schwarzschild-Str. 1, 85741 Garching, Germany
2 Research School of Astronomy & Astrophysics, Cotter Road, Weston ACT 2611, Australia
Theoretical atmosphere models provide the basis for a variety of applications in astronomy. In simplified one-dimensional (1D) atmosphere models, convection is usually treated with the mixing length theory despite its well-known insufficiency, therefore, the superadiabatic regime is poorly rendered. Due to the increasing computational power over the last decades, we are now capable to compute large grids of realistic three-dimensional (3D) hydrodynamical model atmospheres with the realistic treatment of the radiative transfer. We have computed the Stagger-grid, a comprehensive grid of 3D atmosphere models for late-type stars. In the presented contribution, we discuss initial results of the grid by exploring global properties and mean stratifications of the 3D models. Furthermore, we also depict the differences to classic 1D atmosphere models.
© EAS, EDP Sciences, 2013