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大湾区物理讲堂 Presolar Stardust Grains in the Solar Syste 2024年9月6日 10:00 蔻享学术 扫码观看直播 报告人介绍 Nan Liu Nan Liu applies a suite of advanced micro-analytical techniques to understand the stellar origins and formation timing of presolar grains, nucleosynthesis processes in their parent stars, and condensation formation processes in stellar environments. Her current research interests include supernova and asymptotic giant branch stellar nucleosynthesis, analytical development on isotopic analysis of micron-sized samples, and coordinated microanalyses using different techniques. 报告摘要 The chemical makeup of our solar system reflects Galactic chemical evolution in the local interstellar medium (ISM) over the past ~9 Ga. While the incorporated ISM dust was mostly destroyed during the solar system formation, a small fraction of the ISM dust, known as presolar dust, is preserved in pristine extraterrestrial materials and identified by their exoti
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