发表机构
National Astronomical Observatory of Japan, National Institutes of Natural Sciences; Department of Astronomy, Graduate University for Advanced Studies(日本国立天文台,国立自然科学研究院; 高级研究大学院大学天文学系)
机构由 AI 辅助整理,请以论文原文为准。AI 中文总结
本文提出以波能关系作为径向脉动分析新工具,应用于大质量零年龄主序模型,揭示普通模态波能受限而奇异模态存在显著波能泄漏。
AI 中文摘要
波能关系被引入作为线性径向脉动的新分析工具。波能由动能、声学势能、动力学势能和熵势能组成。该关系描述了由非绝热过程和波能泄漏引起的波能变化。它被应用于大质量零年龄主序模型(10、20和30太阳质量)的绝热脉动模态分析。普通模态被很好地限制在内部空腔中,没有显著的波能泄漏。另一方面,奇异模态(S模态)表现出特征函数和动能向恒星表面急剧增加,以及显著的波能泄漏。S模态的动能不再局限于外部空腔。
英文摘要
Wave-energy relation is introduced as a new analysis tool for linear radial pulsations. Wave energy consists of kinetic energy, acoustic-potential energy, dynamical-potential energy, and entropy-potential energy. The relation describes changes in the wave energy caused by non-adiabatic processes and by leakage of wave energy. It is applied to modal analysis of adiabatic pulsations for the massive Zero Age Main Sequence models (10, 20, and 30 solar masses). The ordinary modes are well trapped in the interior cavity without any significant wave-energy leakage. On the other hand, the strange modes (S-modes) exhibit the steep increases in the eigenfunctions and kinetic energy toward the stellar surface and the significant wave-energy leakage. The kinetic energy of S-modes is no longer confined in the exterior cavity.
Comments5 pages, 3 figures