Driving and damping mechanisms in hybrid pressure-gravity modes pulsators - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2008

Driving and damping mechanisms in hybrid pressure-gravity modes pulsators

Résumé

We study the energetic aspects of hybrid pressure-gravity modes pulsations. The case of hybrid beta Cephei-SPB pulsators is considered with special attention. In addition to the already known sensitivity of the driving mechanism to the heavy elements mixture (mainly the iron abundance), we show that the characteristics of the propagation and evanescent regions play also a major role, determining the extension of the stable gap in the frequency domain between the unstable low order pressure and high order gravity modes. Finally, we consider the case of hybrid delta Sct-gamma Dor pulsators.

Dates et versions

hal-03734101 , version 1 (21-07-2022)

Identifiants

Citer

Marc-Antoine Dupret, Andrea Miglio, Josefina Montalbán, A. Grigahcène, Arlette Noels. Driving and damping mechanisms in hybrid pressure-gravity modes pulsators. Proceedings Of The Second HELAS International Conference: Helioseismology, Asteroseismology And MHD Connections, Aug 2007, Göttingen, Germany, Germany. pp.2020, ⟨10.1088/1742-6596/118/1/012020⟩. ⟨hal-03734101⟩
3 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More