云台学术报告2023年4月14日(星期五)上午 1000--1100 1号427会议室

【学术报告】 ～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～ 报告题目： Complicated life of massive stars: the effect of rotation and binarity 报告人： 王晨博士 报告人单位：德国马克斯普朗克天体物理研究所 报告语言： 中文 报告时间： 2023年4月14日(星期五)上午10:00--11:00 报告地点： 1号楼427会议室 报告摘要： ～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～ Massive stars are crucial in our understanding of many areas of modern astrophysics. Despite considerable efforts, there remain numerous unanswered questions regarding the formation and evolution of massive stars. Young star clusters are ideal laboratories to gauge stellar theory, because they are believed to be ensembles of co-eval stars with identical initial chemical compositions. However, recent high-quality Hubble Space Telescope (HST) photometry reveals that the main sequences (MSs) of young star clusters in the colour-magnitude diagram (CMD) are split into several components. By studying these multiple MS components, we suggest that stars may predominantly form in close binaries with moderately fast rotation (~50% of critical velocities). Additionally, binary mergers that occurred early on can result in slowly rotating stars. These factors, including stellar natal spins and binary statistics, can have a significant impact on the entire life of stars, from their MS stages to their eventual explosions. ～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～ 本通知也可以在云台学术报告网页看到： http://www.ynao.cas.cn/xwzx/xstg/ 申请安排学术报告的同事请参见台学术报告管理办法： http://www.ynao.cas.cn/xwzx/xstg/gzzd/ 云台邀请团组：大样本恒星演化组、天体结构与演化重点实验室、云南天文台学术委员会、云南省国际超新星研究重点实验室（筹） 邀请方联系人：陈雪飞13629413587 4月6日