Imaging starspots on active stars using the upgraded MIRC6 combiner on the CHARA interferometer

该奖项将支持一个将红外干涉成像与光谱技术相结合的观测项目，以探测活跃恒星上的点/点群的纬度相关性和大小分布。观测将使用佐治亚州立大学(GSU)高角度分辨率天文中心(CHARA)干涉仪进行，该干涉仪是美国国家科学基金会支持的山上六望远镜光学阵列。加利福尼亚州威尔逊。该小组将利用密歇根红外组合器(MIRC)，这是一个由该小组建造的设施仪器，将在这个项目中及时从4束升级到6束操作。这项工作有望阐明自转、磁场和冷星中恒星活动之间的关系。这种现象在太阳上得到了很好的研究，但在其他恒星上还没有被详细研究过。

This award will support an observational project that combines infrared interferometric imaging with spectroscopic techniques to probe the latitude dependence and size distribution of spot/spot groups on active stars. Observations will be performed using the Georgia State University (GSU) Center for High Angular Resolution Astronomy (CHARA) interferometer, an NSF-supported six-telescope optical array on Mt. Wilson, California. This group will make use of the Michigan Infrared Combiner (MIRC), a facility instrument built by this group that will be upgraded from 4-beam to 6-beam operation in time for this project.The work is expected to shed light on the relationship between rotation, magnetic fields, and stellar activity in cool stars. Such phenomena are well-studied on the Sun, but have not been investigated in great detail in other stars.