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Detection of solar-like oscillations from Kepler photometry of the open cluster NGC 6819
Dennis Stello, Sarbani Basu, Hans Bruntt +49
Asteroseismology of stars in clusters has been a long-sought goal because the assumption of a common age, distance and initial chemical composition allows strong tests of the theor…
The CoRoT target HD 49933: 2- Comparison of theoretical mode amplitudes with observations
R. Samadi, H. -G. Ludwig, K. Belkacem +7
From the seismic data obtained by CoRoT for the star HD 49933 it is possible, as for the Sun, to constrain models of the excitation of acoustic modes by turbulent convection. We co…
The CoRoT target HD 49933: 1- Role of the metal abundance
R. Samadi, H. -G. Ludwig, K. Belkacem +2
Solar-like oscillations are stochastically excited by turbulent convection at the surface layers of the stars. We study the role of the surface metal abundance on the efficiency of…
Solar-like oscillations in massive main-sequence stars. I. Asteroseismic signatures of the driving and damping regions
K. Belkacem, M. A. Dupret, A. Noels
Motivated by the recent detection of stochastically excited modes in the massive star V1449 Aql (Belkacem et al., 2009b), already known to be a Cephei, we theoretically investi…
Mode excitation by turbulent convection in rotating stars. I. Effect of uniform rotation
K. Belkacem, S. Mathis, M. J. Goupil +1
We focus on the influence of the Coriolis acceleration on the stochastic excitation of oscillation modes in convective regions of rotating stars. Our aim is to estimate the asymmet…
The quest for the solar g modes
T. Appourchaux, K. Belkacem, A. M. Broomhall +18
Solar gravity modes (or g modes) -- oscillations of the solar interior for which buoyancy acts as the restoring force -- have the potential to provide unprecedented inference on th…