中国科学院云南天文台学术报告通知

2026年第14期

报告题目：A binary merger product as the direct progenitor of a Type II-P supernova

报告人：牛泽茜 博士

报告人单位：中国科学院大学

报告语言：中文

报告时间：2026年4月1日（星期三）10:30-12:00

报告地点：科研1号楼412会议室

报告摘要：

In the local Universe, Type IIP supernovae (SNe IIP) represent the most common subtype, accounting for approximately 35%-40% of all supernovae. Understanding their origins constitutes a primary scientific objective for time-domain astronomy, and it also greatly advances research in multiple astrophysical fields, such as massive stars evolution, explosion mechanisms, and compact object formation. In the conventional view, SNe IIP progenitors are extensively interpreted within the single-star evolution framework, which aligns with direct detections of red supergiants prior to their explosions. The significant observed diversity among SNe IIP, however, suggests the existence of different underlying evolutionary pathways. Among these, the scenario involving interacting binary systems was proposed in theoretical studies decades ago and has since been widely investigated. Recent population synthesis models further suggest that about 30–50% of SNe IIP may originate from interacting binary systems. Despite considerable efforts, the binary progenitor scenario still lacks strong observational evidence. In this talk, I will address this problem by introducing a newly developed methodology. We confirm that a Type IIP SN originated from a binary merger product. Using state-of-the-art binary evolution simulations, we reconstruct the complex interacting processes that the system underwent before merging. This work presents the first compelling evidence for a binary origin of SNe IIP and calls for a reassessment of these most common explosions in our local Universe. 

报告人简介： 

牛泽茜，中国科学院大学特别研究助理，本科毕业于北京师范大学天文系，博士毕业于中国科学院国家天文台，研究兴趣包括核塌缩型超新星及其前身星，和利用大视场巡天数据了解双星，主持一项国家自然科学基金青年基金项目，获得中国科学院特别研究助理项目资助，曾获中国科学院优秀博士毕业论文、中国科学院院长奖等荣誉。

云台邀请方：大样本恒星演化研究团组、国际超新星中心、云南省国际超新星研究重点实验室

邀请方联系人：查帅