中国科学院云南天文台学术报告通知

2026年第37期

报告题目：Uncovering Galaxy Formation History from Astrophysical Fossils of Millions of Stars with Large-Scale Surveys

报告人：向茂盛 研究员

报告人单位：中国科学院国家天文台

报告语言：中文

报告时间：2026年8月17日（星期一）10:30-12:00

报告地点：科研1号楼412会议室

报告摘要：

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Stars are the cornerstone of modern astronomy and astrophysics. Precise measurements and modeling of large stellar samples are of foundational importance to a broad range of astronomical fields, from Galactic archaeology to exoplanet studies. In this talk, i will demonstrate how we can utilize large-scale surveys, such as LAMOST, Gaia, and DESI, to obtain precise astrophysical properties of millions of stars, and thereby construct an up-to-date picture of the Milky Way’s formation history. I will also explore the scientific potential of next-generation survey facilities, such as ET, CSST, and Mephisto. Specifically, this talk will address two key questions: (1) what precision and accuracy can we achieve in measuring stellar parameters with current and future surveys, and what are the critical bottlenecks ahead? (2) What is the early structural formation history of the Milky Way and other galaxies in the local volume, and how will upcoming surveys advance our understanding?

恒星是现代天文学与天体物理学的基石。对大样本恒星进行高精度测量与精细建模，是支撑银河系考古、系外行星研究等广泛前沿领域的奠基性工作。本报告将展示我们如何借助LAMOST、Gaia、DESI等当代大型巡天项目，获取数百万颗恒星精确的物理参数，并由此构建关于银河系形成的最新前沿图景；同时，还将前瞻下一代巡天旗舰如CSST、ET、Mephisto所蕴藏的科学潜力。报告将聚焦两大核心问题：第一，当前巡天观测能将恒星物理参数测量到何种精度，未来面临的关键瓶颈又是什么？第二，银河系及近邻宇宙其他星系的早期结构形成图景是什么，后续的巡天计划将如何深化对这一问题的认知？

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报告人简介：

Maosheng Xiang is a research professor at the National Astronomical Observatories, Chinese Academy of Sciences (NAOC). He received his Ph.D. in Astrophysics from Peking University in 2015, and prior to that, a Bachelor’s degree in Astronomy from Beijing Normal University. He worked as a LAMOST fellow at NAOC (2015-2018) and a postdoctoral fellow at Max-Planck Institute for Astronomy (2018-2022), before joining NAOC as a faculty member in 2022. His research interests span astronomical surveys, data science, artificial intelligence, stellar astrophysics, and Galactic archaeology. He has authored over 150 peer-reviewed papers in these fields. His work has been recognized as one of the Top 10 annual research advance in Chinese astronomy, and has also been featured among CCTV’s Top 10 International Science and Technology News of the Year.

云台邀请方：恒星物理研究团组、国际超新星中心

邀请方联系人：吴涛