A pulsational study of crystallized white dwarf stars

被引：0

作者：

Montgomery, MH ^{[1
]}

Winget, DE ^{[1
]}

机构：

[1] Univ Texas, Mcdonald Observ, Austin, TX 78712 USA

来源：

BALTIC ASTRONOMY, VOL 7, NOS 1 AND 2 | 1998年

关键词：

stars : white dwarfs; oscillations; evolution; dense; matter; equation of state;

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The DAV BPM 37093 should have a substantially crystallized core based on its mass and temperature. Using this as a motivation, we examine the way in which a crystalline interior affects the nonradial g-mode frequencies of a white dwarf star. We confine ourselves to a relatively massive model within the DA instability strip (M-* = 1.1M.), since crystallization in this temperature range should be important only for high-mass white dwarfs. We find that crystallization has a significant effect on the mean period spacing of adjacent radial overtones, of order 10-30 %. Thus, a correct pulsational treatment; of crystallization is vital if we are to make reliable asteroseismological measurements of a given stars' properties.

引用

页码：197 / 201

页数：5

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