天文系报告:5.5周四下午2:30 物理楼552 中科院上海天文台 李亚平博士

Title:Planet formation in protoplanetary disks: a theoretical point of view

Speaker:Dr. Yaping Li(online)

Institute: Shanghai Astronomical Observatory

Time:14:30-16:30, Thursday, May 5

Location:Physics Building 552

Tencent ID:870-3829-2588

Abstract:

There are more than 5000 exoplanets being discovered up to date, indicating that the formation of planets in protoplanetary disks (PPDs) are a quite robust, though still poorly understood, process. In addition, the recent (sub)mm observations by the Atacama Large Millimeter/submillimeter Array (ALMA) revealed ubiquitous substructures like rings, gaps, spirals, arcs located beyond 10 au from central star in dusty PPDs, which are often believed to be the signposts of forming planets in PPDs. The dynamical interaction of the dusty PPDs with embedded planets can significantly impact the assembly of dust and the early stage formation of protoplanets, and plays an important role in shaping the architecture of exoplanets. In this talk, I will first explore the origin of these substructures in the context of planet-disk interaction scenario, and the observational implications for planet formations by performing two-fluid numerical simulations with multi-dust components. I will also discuss the formation and evolution of different exoplanet populations in protoplanetary disks by considering their accretion and migration processes.

Bio:

Yaping Li received his Bachelor degree from Huazhong University of Science and Technology in 2009 and Ph.D from Xiamen University in 2016. He then was a postdoc in Shanghai Astronomical Observatory (SHAO) between 2016-2018, and in Los Alamos National Laboratory between 2018-2021, and joined in SHAO in 2022. His main research interest mainly includes black hole accretion, AGN multi-wavelength emissions, AGN feedback, dust/gas dynamics in protoplanetary disks, planet formation, and AGN disk channel for binary black hole mergers.

References:

https://ui.adsabs.harvard.edu/abs/2021ApJ...906...52L/abstract

https://ui.adsabs.harvard.edu/abs/2020ApJ...896..135C/abstract

https://ui.adsabs.harvard.edu/abs/2020ApJ...892L..19L/abstract

https://ui.adsabs.harvard.edu/abs/2019ApJ...886...62L/abstract

https://ui.adsabs.harvard.edu/abs/2019ApJ...878...39L/abstract