3D-simulation of the Outer Convection-zone of an A-star

Details 3D-simulation of the Outer Convection-zone of an A-star 3D-simulation of the Outer Convection-zone of an A-star

2004-11-10

arxiv.org/abs/astro-ph/0411254v1

Astronomy and Astrophysics

Astrophysics

6 pages, 2 figures to appear in "The A Star Puzzle", IAU Symp. 224, J. Zverko, W. W. Weiss, J. Ziznovsky & S. J. Adelman eds.,

Scientific paper

10.1017/S1743921304004508

The convection code of Nordlund & Stein has been used to evaluate the 3D,
radiation-coupled convection in a stellar atmosphere with Teff=7300K, logg=4.3
and [Fe/H]=0.0, corresponding to a main-sequence A9-star. I will present
preliminary comparisons between the 3D-simulation and a conventional 1D stellar
structure calculation, and elaborate on the consequences of the differences.

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