Articulo
On the excitation of PG1159-type pulsations
Autor
Gautschy, Alfred
Althaus, Leandro Gabriel
Saio, Hirouki
Institución
Resumen
Stability properties are presented of dipole and quadrupole nonradial oscillation modes of model stars that experienced a late helium shell flash on their way to the white-dwarf cooling domain. The computed instability domains are compared with the observed hot variable central stars of planetary nebulae and the GW Vir pulsators. Facultad de Ciencias Astronómicas y Geofísicas Instituto de Astrofísica de La Plata