论文标题
高振幅ΔScutistar ae ursae majoris的精确进化星星学
Precise Evolutionary Asteroseismology of High-Amplitude δ Scuti Star AE Ursae Majoris
论文作者
论文摘要
恒星结构和进化论是现代天文学的基础之一。恒星的内部结构及其进化状态可以通过星星学学精确测试，因为内部信息通过全球振荡波带到了恒星表面，并变得可观察到。 For stellar evolutionary speed (i.e. how long time scale does a star stay at a special evolution phase?), because of the insurmountable gap between the time scales of the evolutionary history of human civilization and a star, it can only be roughly tested by ensemble of stars in different evolutionary stages in most cases, and all the snapshots of these stars make up our global view of stellar evolution.恒星进化对脉动恒星的结构和相应的全局大小的影响将导致其脉动模式的微小变化，这是其进化状态的最有价值的指标，可用于通过单个恒星而不是恒星组合来测试恒星进化论。在这里，我们报告了一个高振幅$δ$Δ$ scuti star ae ursae majoris，他位于后序列（MS）进化阶段，其观察到的线性周期变化率实际上可以归因于其进化效应。结果测试了单星的恒星进化论从前MS到MS的恒星进化理论，其精确度是单星的前所未有的精度，并且框架可以扩展到其他类型的脉动恒星，以执行精确的星际学杂志学，旨在测试当前的恒星进化理论在不同的进化阶段，并在不同的进化阶段进行构建，并发现该理论，并在理论中播出，并在理论中进行审核，并在理论中进行审慎，并在理论中进行审慎，并在理论中进行审慎，并在理论中进行审核，并在理论中进行审核，并在理论中进行审核，并在理论中进行审核，并在理论中进行审核，并在理论中进行审核，并在理论中进行审核，并在理论中进行审核，并在理论中进行审核，并在理论中进行审查，并在理论中均构建，并在理论中均可测试。回溯这些恒星的历史。
Stellar structure and evolution theory is one of the basis in modern astronomy. Stellar inner structures and their evolutionary states can be precisely tested by asteroseismology, since the inner information is brought to the stellar surface by the global oscillating waves and becomes observable. For stellar evolutionary speed (i.e. how long time scale does a star stay at a special evolution phase?), because of the insurmountable gap between the time scales of the evolutionary history of human civilization and a star, it can only be roughly tested by ensemble of stars in different evolutionary stages in most cases, and all the snapshots of these stars make up our global view of stellar evolution. The effect of stellar evolution on the structure and the corresponding global size of a pulsating star will lead to tiny period variations of its pulsation modes, which are the most valuable indicators of its evolutionary state and can be used to test the stellar evolution theory by a single star rather than ensemble of stars. Here, we report a High-Amplitude $δ$ Scuti star AE Ursae Majoris, who locates in the post main-sequence (MS) evolutionary stage and its observed linear period variation rate can be practically ascribed to its evolutionary effect. The result tests the stellar evolution theory from the pre-MS to post-MS with an unprecedented precision by a single star, and the framework can be extended to other type of pulsating stars to perform precise evolutionary asteroseismology, which aims to test the current stellar evolution theory in different evolutionary stages, discover the discrepancies between the theory and observations, and ultimately build a complete and precise stellar evolution theory to backtrack the history of each of these stars.
