Mass Loss and Disk Formation in Rapidly Rotating Stars

快速旋转恒星中的质量损失和星盘形成

• 批准号: 0097983
• 负责人: Stanley Owocki
• 金额: $ 36.26万
• 依托单位: University of Delaware
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-07-01 至 2006-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0097983&HistoricalAwards=false
• 关键词: Mass; Loss; Disk; Formation; Rapidly

Owocki, Stanley" Mass Loss and Disk Formation in Rapidly Rotating Stars "AST- 0097983A long-standing problem in astronomy is the origin of the circumstellar disks that cause the characteristic Balmer line emission of classical Be stars. The basic task undertaken in this award is to understand the way in which these disks are generated, maintained and dispersed. It is probable that they originate from active regions in or near the surface of the rapidly rotating star and are generated by radial mass ejections augmented with energy supplied by the rotational motion of the star which is locked into the outflowing gas by strong regional magnetic fields. The work requires the consideration of a wide range of physical processes such as radiatively driven mass loss, non-radial pulsation, rapid stellar rotation and the interaction of all of these with magnetic fields. Individually and in various combinations, these processes play a key role in many other astrophysical systems on scales from planets to galaxies. Thus the work done here will have wide applicability to other areas of contemporary astrophysics.

Owocki，Stanley”Mass Loss and Disk Formation in Rapidly Rotating Stars“AST-0097983天文学中一个长期存在的问题是导致经典Be星特征性巴耳末线发射的星周盘的起源。该奖项的基本任务是了解这些磁盘的生成、维护和分发方式。它们很可能起源于快速旋转的星星表面内或附近的活动区域，并由径向质量喷射产生，该径向质量喷射由星星的旋转运动提供的能量增强，该恒星被强区域磁场锁定在流出的气体中。这项工作需要考虑广泛的物理过程，如辐射驱动的质量损失，非径向脉动，快速恒星旋转以及所有这些与磁场的相互作用。这些过程在从行星到星系的许多其他天体物理系统中单独或以各种组合发挥着关键作用。因此，这里所做的工作将对当代天体物理学的其他领域具有广泛的适用性。