The Magnetic Fields T Tauri Stars

金牛座 T 星的磁场

• 批准号: 9819772
• 负责人: Christopher Johns-Krull
• 金额: $ 2.28万
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-07-15 至 2001-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9819772&HistoricalAwards=false
• 关键词: Magnetic; Fields; Tauri; Stars

ABSTRACTJohns-Krull, ChristopherAST-9819772This project utilizes an innovative technique involving observations of Zeeman-broadened optical and infrared absorption lines to measure the magnetic field strength and active region 'filling factor' on the surfaces of young T Tauri stars. Spectrophotometry is also used to quantify the temporal variation and complex geometry of the surface fields. These observations will provide strong constraints on current stellar 'turbulent dynamo models' for the origin and pervasiveness of magnetic activity on young T Tauri stars. They also are also likely to lead to significant improvements in understanding the magnetic connection between the inner boundary of accretion disks and young stellar photospheres.

摘要Johns-Krull，ChristopherAST-9819772该项目利用一种创新的技术，包括观测塞曼加宽的光学和红外吸收线，以测量年轻金牛座T星表面的磁场强度和活动区“填充因子”。 分光光度法也被用来量化表面场的时间变化和复杂的几何形状。 这些意见将提供强有力的约束，目前恒星的“湍流发电机模型”的起源和普遍性的年轻金牛座T星的磁活动。 它们也可能导致对吸积盘内边界和年轻恒星光球之间磁联系的理解的重大改进。