Solar-like oscillation amplitudes and line-widths as a probe for turbulent convection in stars

Details Solar-like oscillation amplitudes and line-widths as a probe for turbulent convection in stars Solar-like oscillation amplitudes and line-widths as a probe for turbulent convection in stars

2006-11-24

arxiv.org/abs/astro-ph/0611760v1

Astronomy and Astrophysics

Astrophysics

9 pages ; 3 figures ; invited talk given during the Symposium no. 239 "Convection in Astrophysics", International Astronomical

Scientific paper

10.1017/S1743921307000713

Excitation of solar-like oscillations is attributed to turbulent convection and takes place at the upper-most part of the outer convective zones. Amplitudes of these oscillations depend on the efficiency of the excitation processes as well as on the properties of turbulent convection. We present past and recent improvements on the modeling of those processes. We show how the mode amplitudes and mode line-widths can bring information about the turbulence in the specific cases of the Sun and Alpha Cen A.

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