LAMOST-TESS/Kepler天区类太阳振动恒星的研究

虽然目前的恒星结构与演化理论可以解释大多数恒星的观测现象，但是当涉及到如中心核大小、对流区位置、转动、磁活动等与恒星内部结构相关的参数时，已有的理论模型尚难以给出精确的结果。原因在于现有的恒星结构与演化理论仍然存在诸多物理细节上的缺失和不确定，恒星形成和演化的实际物理过程比模型要更为复杂多样。因此，恒星物理的继续发展需要观测和理论对大量恒星内部细节进行研究，来提高已知物理的准确性并探索其未知的物理细节。近年来空间和地面观测技术的飞速发展, 提供了丰富的高精度、长时序的类太阳振动恒星的观测数据，其所揭示的这些恒星内部结构、转动和磁场的信息，成为研究类太阳恒星物理性质的坚实基础。本项目将采用LAMOST中低分辨率光谱观测和Kepler和TESS卫星提供的大样本高精度的恒星光变曲线，研究和解决类太阳恒星中关于其内部结构、磁场活动以及演化规律等一系列重要难题。

The established theories of stellar structure and evolution can properly explain most of the observed phenomena of stars. However, the details of internal physics are still indistinct to determine some characters accurately, e.g., the core size, the boundary of the convection zone, the rotation profile, and underline mechanisms of magnetic activity. Because of the lack of knowledge about the inside of stars, established theories apply assumptions and approximations to make models, which are obvious not delicate to describe the real physical processes of stars. Therefore, the research on the internal structure of a large sample of stars is the key to promote the study of stellar physics. In recent years, the ground-based and space telescope have provided a large amount of high-precision time series data for solar-like oscillation stars. These data have revealed internal structures of stars and hence significantly benefit the studies of the physical theories and properties stars. In this project, we intend to adopt LAMOST medium- and low-resolution spectra, combined with the large sample of high-precision light curve observed by Kepler and TESS satellites, aiming solve a series of key issues related to the internal structure, magnetic activity, and evolution of solar-like stars.