Mass loss and dust formation in AGB and post-AGB stars

AGB 和后 AGB 恒星中的质量损失和尘埃形成

• 批准号: 9987408
• 负责人: John Bieging
• 金额: $ 11.6万
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-05-01 至 2004-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9987408&HistoricalAwards=false
• 关键词: Mass; loss; dust; formation; AGB

ABSTRACTBieging, John"Mass Loss & Dust Formation in AGB & post-AGB Stars"AST-9987408This investigation addresses several problems associated with the mass loss processes in intermediate mass stars during the late stages of their evolution. The work will proceed along three main avenues: (1) a study of molecular line emission as a probe of pulsationally driven shocks in outflowing material; (2) high resolution imaging in the millimeter wavelength region to map the initial stages of mass loss via the distribution of gas near evolving stars; and (3) a spectrophotometric study of the composition and distribution of dust that forms during the outflow process. Funding for this project was provided by the NSF program for Stellar Astronomy & Astrophysics (AST/SAA).ABSTRACT

摘要Bieging，John“AGB后AGB星的质量损失尘埃形成“AST-9987408这项研究解决了与中等质量恒星在演化后期的质量损失过程有关的几个问题。 这项工作将沿着三个主要途径进行：（1）研究分子谱线发射，作为流出物质中脉动驱动冲击的探测器;（2）在毫米波长区域进行高分辨率成像，通过演化恒星附近气体的分布绘制质量损失的初始阶段;（3）对流出过程中形成的尘埃的组成和分布进行分光光度研究。 该项目的资金由美国国家科学基金会恒星天文天体物理学计划（AST/SAA）提供。