Pulsation evolution and hydrodynamics of rapidly rotating stars

快速旋转恒星的脉动演化和流体动力学

• 批准号: 288252-2007
• 负责人: Deupree, Robert
• 金额: $ 2.01万
• 依托单位: Saint Mary's University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2008
• 资助国家: 加拿大
• 起止时间: 2008-01-01 至 2009-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=395754
• 关键词: Pulsation; evolution; hydrodynamics; rapidly; rotating

Our knowledge of the structure and evolution of stars has increased greatly with the advent of high powered digital computers. We have understood the basic life cycle for stars for about four decades now, but our failure to match increasingly refined observations demonstrates that we do not understand everything. For example, the traditional models predict neither the enhancement of the surface abundances of some elements which must be created deep inside the star and transported to the surface nor the correct values for all the observed oscillation periods of stars appreciably more massive than the sun.

随着高性能数字计算机的出现，我们对恒星结构和演化的认识大大增加了。到目前为止，我们已经了解了恒星的基本生命周期大约40年了，但我们无法与越来越精确的观测相匹配，这表明我们并不是什么都了解。例如，传统的模型既不能预测某些元素表面丰度的增强，这些元素必须在恒星深处产生并运输到表面，也不能预测所有观测到的比太阳大得多的恒星的振荡周期的正确值。