Broken resonance chains: from exo-planets to the Solar-planets

Wednesday 21 Oct 2026, 14:30 → 15:00 Asia/Shanghai

Tsung-Dao Lee Institute/S4F-SW - Open Area (Tsung-Dao Lee Institute)

Shuo Huang（黄硕）

Title:  Broken resonance chains: from exo-planets to the Solar-planets
Time: 14:30-15:00 (UTC+8), 21October 2026, Wednesday
Host: Mengtao Tang
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Meeting ID: 151893686 (no password)

Abstract: In the past two decades, transit surveys have revealed a population of sub-Neptunes—planets with thick atmospheres that must have completed their growth within protoplanetary disks. During this stage, gravitational interactions with the disk drive planet migration, often trapping neighboring planets into mean-motion resonances. Yet most exoplanets today are not in resonance, indicating that dynamical instabilities must have disrupted many primordial resonances. My research seeks to uncover the history of planet formation from these orbital architectures. In this talk, I will first show how planet formation leaves imprints in resonant systems such as TRAPPIST-1. I will then demonstrate how wide companion planets can destabilize the primordial resonances of inner terrestrial planets and even trigger Moon-forming impacts, as in our Solar System. 

Short Bio: Shuo Huang is currently a TDLI postdoc. He obtained Joint PhD at Tsinghua University (advisor Chris Ormel) and Leiden Observatory (advisor Simon Portegies Zwart) in 2026. His research focuses on the orbital dynamics and planet formation.