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Radial vibrations in a 5 M⊙ double-shell burning hydrogen-helium star

Kırbıyık, Hayrettin
A model of 5M ⊙ hydrogen-helium star with no metals has been considered. The properties of the adiabatic oscillations were obtained, and the vibrational instability of the model has been investigated. The model is a double-shell burning star. Calculations were done for the fundamental mode as well as the first and the second harmonics. The model has been found vibrationally unstable against radial adiabatic pulsations.