44 Tau是否处于MS后收缩期？
Is 44 Tau in the post-MS contraction phase?
摘要：
Scuti delta恒星44 Tau的演化阶段一直不清楚。最近的脉动研究声称主序和主序后膨胀模型。一项新的光度研究将44 Tau中检测到的频率增加到49个，其中15个是独立的模式。我们现在发现，以前被忽略的第三种可能性，后主序收缩阶段，是在观察到的频率范围，以及所有个别的径向和非径向模式的频率值非常一致。这些结果解决了以前在文献中的分歧，并证明了星震学可以确定恒星的演化状态。
英文摘要：
The evolutionary stage of the delta Scuti star 44 Tau has been unclear. Recent pulsation studies have claimed both main sequence and post-main sequence expansion models. A new photometric study increased the number of detected frequencies in 44 Tau to 49, of which 15 are independent modes. We now find that a previously ignored third possibility, the post-main sequence contraction phase, is in excellent agreement with the observed frequency range, as well as the frequency values of all individual radial and nonradial modes. These results resolve the previous disagreements in the literature and exemplify that asteroseismology can determine the evolutionary status of a star.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
