Lithic Astronomy: The age and origin of the elements and their incorporation in the solar nebula

石质天文学：元素的年龄和起源及其在太阳星云中的结合

• 批准号: ARC : DP0342772
• 负责人: Prof Ernst Zinner
• 金额: $ 19.5万
• 依托单位: Australian National University
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2003
• 资助国家: 澳大利亚
• 起止时间: 2003-01-01 至 2005-12-31
• 项目状态: 已结题
• 来源: https://researchdata.edu.au/lithic-astronomy-the-solar-nebula/67673
• 关键词: Lithic; Astronomy; age; origin; elements

Lithic Astronomy: The age and origin of the elements and their incorporation in the solar nebula. All heavy elements are produced in stars. The signature of nucleosynthesis is the isotopic composition of the elements and thus measurement of isotopic compositions allows nuclear astrophysics to be elucidated in the laboratory. This project will examine the linkages between stellar sites and the material in our solar system through measurement of interstellar grains and other primitive material obtained from meteorites. A chronology of processes affecting the solar nebula will be determined through measurement of radionuclides. Th/U measurements in presolar grains could allow a view of galactic chemical evolution billions of years prior to the solar nebula.

岩石天文学：元素的年龄和起源以及它们在太阳星云中的结合。所有的重元素都是在恒星中产生的。核合成的标志是元素的同位素组成，因此同位素组成的测量可以在实验室中阐明核天体物理学。该项目将通过测量从陨石中获得的星际颗粒和其他原始物质，研究恒星位置与太阳系物质之间的联系。将通过测量放射性核素来确定影响太阳星云的过程的年表。太阳前颗粒中的Th/U测量可以让我们看到太阳星云之前数十亿年的银河系化学演化。