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

使用 CHARA 干涉仪上升级的 MIRC6 组合器对活跃恒星上的星斑进行成像

• 批准号: 1108963
• 负责人: John Monnier
• 金额: $ 37.07万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-08-01 至 2016-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1108963&HistoricalAwards=false
• 关键词: Imaging; starspots; active; stars; using

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.

该奖项将支持一个观测项目，该项目将红外干涉成像与光谱技术相结合，以探测活动恒星上斑点/斑点群的纬度依赖性和尺寸分布。 观测将使用佐治亚州立大学 (GSU) 高角分辨率天文学中心 (CHARA) 干涉仪进行，这是一个由 NSF 支持的六望远镜光学阵列，位于加利福尼亚州威尔逊山。 该小组将利用密歇根红外组合器（MIRC），这是该小组建造的一种设施仪器，该仪器将在该项目中及时从 4 光束升级到 6 光束操作。这项工作预计将揭示冷恒星中旋转、磁场和恒星活动之间的关系。 此类现象在太阳上已得到充分研究，但在其他恒星上尚未得到详细研究。