上部主序星非径向脉动不稳定模
发布时间：2018-10-11 19:33
【摘要】：根据非局部和非定常恒星对流理论,计算了质量3～30 M_⊙恒星演化模型低球谐阶(l=1～4)p4～g39非径向模的线性非绝热脉动,研究了对流对非径向脉动的影响.结果表明,对流对恒星非径向脉动稳定性有不可忽略的影响.然而假若不关注单个恒星和单个振动模的细节,从总体上粗略地看,理论的脉动不稳定区的大致位置和范围并未受到对流的明显影响.
[Abstract]:Based on the theory of nonlocal and unsteady stellar convection, the linear nonadiabatic pulsation of the low spherical harmonic (LQ _ 1 ~ 4) p4~g39 nonradial mode in the mass 3 ~ (30) M _ 298 stellar evolution model is calculated. The influence of convection on the nonradial pulsation is studied. The results show that the convection has a significant effect on the nonradial pulsation stability of stars. However, if we do not pay attention to the details of single star and single vibrational mode, the general position and range of the theoretical pulsating instability region are not obviously affected by convection.
【作者单位】： 中国科学院紫金山天文台;中国科学院国家天文台;
【基金】：国家自然科学基金项目(10773029、10573022)资助
【分类号】：P152
[Abstract]:Based on the theory of nonlocal and unsteady stellar convection, the linear nonadiabatic pulsation of the low spherical harmonic (LQ _ 1 ~ 4) p4~g39 nonradial mode in the mass 3 ~ (30) M _ 298 stellar evolution model is calculated. The influence of convection on the nonradial pulsation is studied. The results show that the convection has a significant effect on the nonradial pulsation stability of stars. However, if we do not pay attention to the details of single star and single vibrational mode, the general position and range of the theoretical pulsating instability region are not obviously affected by convection.
【作者单位】： 中国科学院紫金山天文台;中国科学院国家天文台;
【基金】：国家自然科学基金项目(10773029、10573022)资助
【分类号】：P152
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