EPSC Abstracts
Vol. 17, EPSC2024-309, 2024, updated on 03 Jul 2024
https://doi.org/10.5194/epsc2024-309
Europlanet Science Congress 2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Sequential giant planet formation initiated by disc substructure

Tommy Chi Ho Lau1, Til Birnstiel1,2, Joanna Dra̧żkowska3, and Sebastian Stammler1
Tommy Chi Ho Lau et al.
  • 1University Observatory, LMU Munich, Munich, Germany
  • 2Exzellenzcluster ORIGINS, Garching, Germany
  • 3Max Planck Institute for Solar System Research, Göttingen, Germany

Planet formation models are necessary to understand the origins of diverse planetary systems. Circumstellar disc substructures have been proposed as preferred locations of planet formation but a complete formation scenario has not been covered by a single model so far.We aim to study the formation of giant planets facilitated by disc substructure and starting with sub-micron-sized dust. We connect dust coagulation and drift, planetesimal formation, N-body gravity, pebble accretion, planet migration, planetary gas accretion and gap opening in one consistent modelling framework. We find rapid formation of multiple gas giants from the initial disc substructure. The migration trap near the substructure allows the formation of cold gas giants. A new pressure maximum is created at the outer edge of the planetary gap, which triggers the next generation of planet formation resulting in a compact chain of giant planets. A high planet formation efficiency is achieved as the first gas giants are effective in preventing dust from drifting further inwards, which preserves materials for planet formation. Sequential planet formation is a promising framework to explain the formation of chains of gas and ice giants.

How to cite: Lau, T. C. H., Birnstiel, T., Dra̧żkowska, J., and Stammler, S.: Sequential giant planet formation initiated by disc substructure, Europlanet Science Congress 2024, Berlin, Germany, 8–13 Sep 2024, EPSC2024-309, https://doi.org/10.5194/epsc2024-309, 2024.