标题： G8型恒星EK Eridani中的振荡和磁场 显示英文标题

标题： Oscillations and magnetic fields in the G8 star EK Eridani

摘要： 星震学可以提供其他方式不易获得的信息，如恒星质量以及演化阶段。 强磁场通常伴随着快速旋转，这由于光谱线变宽而使星震学变得困难。 我们发现了一颗可能成为恒星罗塞塔石碑的缓慢旋转的类太阳恒星，其具有强磁场。 我们最近在这个活跃的次巨星中检测到了类太阳振荡，但振幅远低于预期。 我们认为大尺度磁场改变了脉动，这些脉动变得具有磁声性质。 在这里，我们呈现我们的结果，并讨论可能的含义以及这可能会如何开启研究磁场和恒星演化的新领域。 显示英文摘要

摘要： Asteroseismology can provide information that is otherwise not easily accessible, like the stellar mass and the evolutionary stage. Strong magnetic fields are usually accompanied by rapid rotation, which makes asteroseismology difficult due to spectral line broadening. We have found what may turn out to be the Rosetta Stone of the stars: A slowly rotating solar-like star with a strong magnetic field. We have recently detected solar-like oscillations in this active sub-giant, but with amplitudes much lower than expected. We suggest that the large-scale magnetic field alters the pulsations, which become magneto-acoustic in nature. Here we present our results and discuss possible implications and how this may open up a new frontier in the studies of magnetic fields and stellar evolution.