On the excitation of PG1159-type pulsations

被引：26

作者：

Gautschy, A

Althaus, LG

Saio, H

机构：

[1] Univ Politecn Catalunya, Dept Fis Aplicada, Barcelona 08860, Spain

[2] Tohoku Univ, Sch Sci, Astron Inst, Sendai, Miyagi 9808578, Japan

来源：

ASTRONOMY & ASTROPHYSICS | 2005年 / 438卷 / 03期

关键词：

stars : evolution; stars : white dwarfs; stars : oscillations;

D O I：

10.1051/0004-6361:20042486

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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.

引用

页码：1013 / 1020

页数：8

共 27 条

[1] The formation and evolution of hydrogen-deficient post-AGB white dwarfs:: The emerging chemical profile and the expectations for the PG1159-DB-DQ evolutionary connection [J].