期刊
ASTROPHYSICAL JOURNAL
卷 755, 期 2, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0004-637X/755/2/128
关键词
diffusion; stars: abundances; stars: interiors; stars: oscillations; stars: winds, outflows; white dwarfs
资金
- NSERC of Canada
We examine in detail the proposition that GW Vir pulsators owe their existence to a residual stellar wind that competes against the settling of the carbon and oxygen atoms which fuel pulsational instabilities via their opacity. With cooling, the fading wind progressively loses its capacity to maintain enough of these opaque atoms in the driving region, leading naturally to a red edge where pulsations disappear. We investigate, in particular, the effects of changing the mass-loss law and the initial envelope composition on the position of the red edge in the log g-T-eff diagram. With this approach, we derive a coherent picture of the GW Vir instability domain.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据