Oral Presentation
Gap and Vortex in Protoplanetary Disks
Presenter: Takayuki Muto (Division of Liberal Arts, Kogakuin University, Japan)
High sptial resolution ALMA observations have revealed protoplanetary disks are rich in structures. Gaps, asymmetric bumps, and spirals are observed in dust continuum emission in a number of disks, and the next important step is to detect such structures in gas emission. It is also important to construct theoretical models of such small-scale (and/or) non-axisymmetric structures. In this presentaiton, we show relatively large parameter study of (1) gap opened by a planet in the disk and (2) the stability of an axisymmetric gas ring and the formation of large-scale vortex by Rossby wave instability (RWI). We present the model prediction of gas structures in both cases and discuss what we can learn about the physical state of the disk and (possibly) the forming planet from such structures if observed.
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