3D-simulation of the outer convection-zone of an A-star
Abstract
The convection code of Nordlund & Stein has been used to evaluate the 3D, radiation-coupled convection in a stellar atmosphere with Teff = 7300K, log g = 4.3 and [Fe/H]= 0.0, corresponding to a main-sequence A9 star. I present preliminary comparisons between the 3D-simulation and a conventional 1D stellar structure calculation, and elaborate on the consequences of the differences.
- Publication:
-
The A-Star Puzzle
- Pub Date:
- December 2004
- DOI:
- 10.1017/S1743921304004508
- arXiv:
- arXiv:astro-ph/0411254
- Bibcode:
- 2004IAUS..224..155T
- Keywords:
-
- Convection;
- stars: atmospheres;
- stars: early-type;
- Astrophysics
- E-Print:
- 6 pages, 2 figures to appear in "The A Star Puzzle", IAU Symp. 224, J. Zverko, W. W. Weiss, J. Ziznovsky &