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- Seminars and Workshops
- Institute of Astronomy and Astrophysics
- Location
R1203 of the Astronomy-Mathematics Building, National Taiwan University
- Speaker Name
Yuji Matsumoto (ASIAA)
- State
Definitive
- Url
Formation of multiple-planet systems in resonant chains around M dwarfs
2021-01-18 12:00 - 13:30
Recent observations have revealed the existence of multiple-planet systems composed of the Earth-mass planets around late M dwarfs. Planets around late M dwarfs tend to be in or near resonant chains, while those around FGK dwarfs are not. We investigate the formation of multiple-planet systems in resonant chains around low-mass stars. A time-evolution model of the multiple-planet formation via pebble accretion in the early phase of the disk evolution is constructed based on the formation model for the TRAPPIST-1 system. We find that there is a range of the protoplanet formation timescale for forming the stable multiple-planet systems in resonant chains. This range depends on the stellar mass. We suggest that the protoplanet formation timescale is a key parameter for the formation of multiple-planet systems with planets in resonant chains around low-mass stars.
