Circumstellar Matter: Neutral Shells and Planetary Nebula Formation

星周物质：中性壳和行星状星云的形成

• 批准号: 9986159
• 负责人: Patrick Huggins
• 金额: $ 10.5万
• 依托单位: New York University
• 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: 2000-05-15 至 2004-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9986159&HistoricalAwards=false
• 关键词: Circumstellar; Matter; Neutral; Shells; Planetary

ABSTRACTHuggins, Patrick"Circumstellar Matter: Neutral Shells & Planetary Nebula Formation"AST-9986159This project continues the PI's study of neutral envelopes of the planetary nebula stage of stellar evolution. The proposed work will include several new areas of investigation: (1) the shaping of planetary nebulae by jets; (2) episodic mass loss and chemical changes; (3) globule and knot formation in the ejecta; and (4) circumstellar envelope evolution. The results will contribute substantially to improving our understanding of the latest stages of stellar evolution and how matter ultimately is returned to the interstellar medium. The models that are developed will be extensively compared to ground- and space-based multiwavelength observations.Funding for this project was provided by the NSF program for Stellar Astronomy & Astrophysics (AST/SAA).

thuggins, Patrick“星周物质：中性壳&行星状星云形成”ast -9986159这个项目继续了PI对行星状星云演化阶段中性包壳的研究。提出的工作将包括几个新的研究领域：(1)由喷流形成的行星状星云；(2)偶发性质量损失和化学变化；(3)喷出物中球状和结状的形成；(4)星周包膜演化。这些结果将大大有助于提高我们对恒星演化的最新阶段以及物质最终如何返回星际介质的理解。所开发的模型将与地面和天基多波长观测进行广泛比较。该项目由美国国家科学基金会恒星天文学和天体物理学项目（AST/SAA）提供资金。