Doppler Imaging Studies of T Tauri, Zero-age Main Sequence, and Cataclysmic Variable Stars

金牛座 T、零年龄主序星和灾变变星的多普勒成像研究

• 批准号: 9615571
• 负责人: Artie Hatzes
• 金额: $ 7.5万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-08-01 至 2001-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9615571&HistoricalAwards=false
• 关键词: Doppler; Imaging; Studies; Tauri; Zero

Hatzes, Artie AST 96-15571 Dr. Hatzes will continue his research program of Doppler imaging to study surface structure on a variety of active, late-type stars. His program combines continued monitoring of RS CVn stars with new programs to obtain Doppler images of weak T Tauri stars, zero-age main sequence stars in nearby clusters, and cataclysmic variables. Studies of the sizes, shapes, latitudes of formation, migratory patterns, and overall temporal evolution of large cool spots on stars trace the emergent magnetic flux, and so provide fundamental information on the magnetic and convective processes responsible for observed activity on these stars and the Sun. Dr. Hatzes will use the Hobby-Eberly telescope in preliminary studies of cataclysmic variables, while performing studies of Weak T Tauri stars and brighter ZAMS objects with the McDonald telescopes. In addition, he will begin a new observational program of Zeeman Doppler imaging to study RS CVn and T Tauri stars with the 2.7m McDonald telescope. In all these programs, the goal is to follow and map star spot morphology and activity as a probe of surface magnetic activity and the underlying stellar dynamo. ***

哈茨，阿蒂AST 96-15571 Hatzes博士将继续他的多普勒成像研究计划，以研究表面结构上的一个 各种活跃的晚型恒星 他的计划结合了对RS CVn恒星的持续监测 通过新的程序来获得弱金牛T星的多普勒图像，零年龄主序星 和灾难性的变星。 对大小，形状，形成纬度的研究， 迁移模式，以及恒星上大冷点的整体时间演化， 磁通量，因此提供了关于磁和对流的基本信息 负责这些恒星和太阳上观测到的活动的过程。 哈茨博士将使用 霍比-埃伯利望远镜对激变变星的初步研究，同时进行研究 弱T型金牛星和更亮的ZAMS天体。 此外，本发明还提供了一种方法， 他将开始一项新的塞曼多普勒成像观测计划，以研究RS CVn 和金牛座T星的2.7米麦克唐纳望远镜。 在所有这些计划中，目标是遵循 并绘制星星斑的形态和活动图，作为表面磁活动的探针， 是恒星发电机的基础 ***