Non-radial non-adiabatic solar like oscillations in red giants : Evolutionnary effects on theoretical power spectrum.

Corot and Kepler observations of red giants reveal rich spectra of non-radial solar-like oscillations allowing to probe their internal structure.
The study of non-adiabatic and energetic aspects of these oscillations is of great importance to predict not only the frequencies but also the FWMH and Heights of the peaks in power spectrum. This two observables are indeed directly related to modes lifetimes, necessitating a non-adiabatic approach. The height also depends on the energy injected in the mode by the turbulence in the upper convective-zone. We use a stochastic excitation model to compute the amplitudes of each modes.
We investigate the differences in power spectrum between an RGB and an HB stars with the same global parameters. We also follow the evolution of a star on the RGB and investigate the effect of its ascension on theoretical power spectrum to predict when on the RGB are mixed-modes more likely to be detectable.