A nonlinear model for RR Lyrae double mode pulsation

被引：0
|
作者：
Feuchtinger, MU [1 ]
机构：
[1] Univ Vienna, Inst Astron, A-1180 Vienna, Austria
来源：
ASTRONOMY & ASTROPHYSICS | 1998年 / 337卷 / 02期
关键词：
stars : variables : RR Lyrae; stars : oscillations; methods : nonlinear; methods : numerical;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The Vienna nonlinear code for modelling pulsating stars is applied to the problem of RR Lyrae double mode pulsation. For stellar parameters of M = 0.65 M., log(L/L.) = 1.72 and XYZ=(0.760, 0.239, 0.001) we find a stable double mode solution in a small effective temperature range around 6820 K. The fundamental period is given by P-0 = 0.5279 days and period and amplitude ratios corresponding to P-1/P-0 = 0.7468 and A(1)/A(0) = 2.943 lie within the range of observed RR Lyrae double mode parameters.
引用
收藏
页码：L29 / L33
页数：5
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