Gaps and Spirals in Protoplanetary Disks

Series: 
Astronomy Unit Seminars
Speaker: 
Pin-Gao Gu
Host: 
James Cho
Date: 
April 29th, 2016 at 14:30
Room: 
GO Jones Room 610
Abstract: 

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.