Complicated life of massive stars: the effect of rotation and binarity

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



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. 






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