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

Kirbiyik H.

Astrophysics and Space Science, vol.168, no.2, pp.217-224, 1990 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 168 Issue: 2
  • Publication Date: 1990
  • Doi Number: 10.1007/bf00636867
  • Journal Name: Astrophysics and Space Science
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.217-224
  • Ankara University Affiliated: No

Abstract

A model of 5 M⊙ 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. © 1990 Kluwer Academic Publishers.