报告题目：Protoplanetary disk evolution

　　报告人：Dr. Min Fang, Department of Astronomy, University of Arizona, USA

　　报告人简介：房敏目前在NASA支持的EOS(Earths in Other Solar Systems)项目的下在亚利桑那大学天文学从事博士后研究，研究的方向主要是原行星盘的演化，以及原行星盘的一些活动，比如吸积和盘风。

　　摘要：Protoplanetary disks form as a result of angular momentum conservation during the protostellar core collapse and play an important role in planet formation. A study of protoplanetary disks evolution is important for us to understand the formation of our solar system. In this talk, I will talk about internal and environmental effects on evolution of protoplanetary disks. For internal effects, I will talk about the accretion and disk wind. For the environmental effects, I will show that the photoevaporation driven by the UV photons from massive stars dominates the protoplanetary disk evolution in massive clusters.

　　时间：10月10日（星期三）上午10:00

　　地点：紫金山天文台5号楼216会议室

欢迎大家参加！

紫金山天文台学术委员会