AI 中文总结
本文针对双磁热双星HD 156424，分析TESS数据发现相位变化，对其进行星震建模确定脉动与主星相关，得到7.5倍太阳质量的年轻最佳拟合模型。
AI 中文摘要
HD 156424是天蝎座OB4星协中的一颗热磁星，此前已被确认为双星系统的一部分。光谱偏振结果显示其伴星也具有强磁场，因此这是一个罕见的双磁热双星例子。本研究旨在对包括相位变化在内的凌日系外行星巡天卫星（TESS）数据进行更详细的分析，发现与斜磁转动物体一致的短期相位变化，以及与此前提出的第三天体一致的长期相位变化。我们对该恒星进行了星震建模，确定其脉动最可能与系统主星相关，最佳拟合模型均显示恒星年轻，且该恒星可被质量为7.5倍太阳质量（M=7.5 M⊙）的模型很好地拟合。
英文摘要
HD 156424 is a hot magnetic star in the Sco OB4 association and has previously been identified as part of a binary system. Spectropolarimetric results show that the companion star is also strongly magnetic, and thus this is a rare example of a doubly magnetic hot binary. In this work, we aim to present a more detailed analysis of Transiting Exoplanet Survey Satellite data including phase variation. We find short-term phase variation consistent with an oblique magnetic rotator, as well as long-term phase variation consistent with the third element proposed previously. We performed asteroseismic modelling of the star and determined that the pulsations are most likely associated with the primary of the system. Our best-fit models are universally young, and we find that the star is well fitted by a model with $M$=7.5 M$_{\odot}$.
CommentsAccepted for publication in A&A
