报告题目：Gaps and spirals in protoplanetary disks

　　报告人：辜品高（中国台湾中央研究院天文所）

　　摘要：The observational features like gaps and spirals in protoplanetary disks have been postulated as signposts of embedded planets. In this talk, I will first explain to you how we discover the gas gaps/rings in the HL Tau disk, which has been well-known for its striking dust ringlike structures. Then I will summarize our linear result of wave excitation and propagation due to planet-disk interactions and touch upon its implication for the spirals seen on the surface of a protoplanetary disk.

　　时间：12月27日（周二）上午10:30--11:30am

　　地点：天文楼212报告厅

欢迎各位老师、同学参加！

　                                     　南京大学天文与空间科学学院