U.S.-Italy Workshop: Angular Momentum and Mass Loss for Hot Stars; Ames, Iowa, October 1989

美国-意大利研讨会：热恒星的角动量和质量损失；

• 批准号: 8915434
• 负责人: Lee Anne Willson
• 金额: $ 1.25万
• 依托单位: Iowa State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-10-01 至 1991-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8915434&HistoricalAwards=false
• 关键词: U.S.; Italy; Workshop; Angular; Momentum

This award will support a workshop jointly organized by Professor Lee A. Willson of Iowa State University and Professor Roberto Stalio of the University of Trieste. The workshop will be the second in a series on dynamical phenomena in stars and circumste- llar environments. The first one was held in Trieste on pulsation and mass loss; this one will be on angular momemtum and mass loss and is being held in Ames, Iowa. The objective of this series of workshops is to explore and stimulate research in fundamental problems of stellar astrophysics. Fundamental unsolved problems of stellar astrophysics include the effects of angular momentum on stellar structure and evolution, the nature and efficiency of the processes by which angular momentum is redistributed within and lost from stars, and the role that stellar rotation plays in enhancing or driving stellar mass loss. A workshop on the topic of angular momentum and mass loss is timely because: (1) computational codes incorporating stellar rotation into stellar models are beginning to be developed; (2) there has not been a meeting recently concerning this topic as it applies to the more massive, rapidly rotating stars; (3) the importance of rotation as a factor in mass loss and in affecting pulsation, which in turn affects mass loss, is just beginning to be appreciated; and (4) observational techniques making use of rapid rotation to study pulsation properties of early type stars are also being developed. The topic is particularly appropriate for support under the U.S.- Italy Program since much of the important activity in this area is being carried out in these two countries.

该奖项将支持爱荷华州立大学的Lee A.Willson教授和的里雅斯特大学的Roberto Stalio教授联合举办的讲习班。这次研讨会将是关于恒星及其周围环境中的动力学现象系列的第二个研讨会。第一次是在的里雅斯特举行的关于脉动和质量损失的会议；这次将是关于角动量和质量损失的会议，目前在爱荷华州的艾姆斯举行。这一系列讲习班的目的是探索和促进对恒星天体物理基本问题的研究。恒星天体物理学尚未解决的基本问题包括角动量对恒星结构和演化的影响，角动量在恒星内部重新分配和丢失的过程的性质和效率，以及恒星自转在增加或推动恒星质量损失方面所起的作用。关于角动量和质量损失主题的研讨会是及时的，因为：(1)将恒星自转纳入恒星模型的计算程序正在开始开发；(2)最近还没有关于这个主题的会议，因为它适用于质量更大、旋转更快的恒星；(3)自转作为质量损失和影响脉动的一个因素的重要性才刚刚开始被认识到，而脉动反过来又影响质量损失；以及(4)利用快速自转来研究早期类型恒星的脉动特性的观测技术也在开发中。这个话题特别适合于美国-意大利计划下的支持，因为这一领域的许多重要活动都是在这两个国家进行的。