RUI: Multi-Band Spectral Photometry of Orion Population and Dwarf M Stars at Van Vleck Observatory

RUI：范弗莱克天文台猎户座星群和矮 M 星的多波段光谱光度测量

• 批准号: 8620054
• 负责人: William Herbst
• 金额: --
• 依托单位: Wesleyan University
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-06-01 至 1990-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8620054&HistoricalAwards=false
• 关键词: RUI; Multi; Band; Spectral; Photometry

This award supports continued use of the 0.6 meter telescope on the campus of Wesleyan University to monitor stars that appear to have starspots and other activity. Observations in the light of hydrogen-alpha will be improved to the point where even the normally active, Sun-like stars can be monitored. The observations will be extended to activity on cooler stars by monitoring the calcium infrared triplet lines. Stars with large spots change their brightness as they rotate the spots into and out of our view. Thus measurements of brightness changes inform us directly of the rate at which the stars rotate. A knowledge of stellar rotation is valuable because rotation is a major cause for starspots and other activity similar to solar activity. This program has emphasized observations of very young stars, especially the star T Tauri and other members of the T Tauri class, because these show very strong activity. The Sun may once have been similarly active.

该奖项支持继续使用卫斯理大学校园内的 0.6 米望远镜来监测似乎有星黑子和其他活动的恒星。根据氢-α进行的观测将得到改善，甚至可以监测正常活跃的类太阳恒星。通过监测钙红外三重线，观测结果将扩展到较冷恒星的活动。具有大斑点的恒星随着斑点旋转进出我们的视野而改变它们的亮度。因此，亮度变化的测量可以直接告诉我们恒星旋转的速度。了解恒星自转是很有价值的，因为自转是星黑子和其他类似于太阳活动的活动的主要原因。这个节目强调了对非常年轻恒星的观察，特别是金牛座T星和金牛座T级的其他成员，因为这些恒星表现出非常强的活动性。太阳可能曾经也有过类似的活跃。