Dynamical stability constraints on the architecture of planetary systems

Séminaire IPAG de Antoine Petit (Lund University), jeudi 19 novembre 2020, 11h00, IPAG seminar room

Exoplanet discoveries have unveiled a diversity of systems organization, showing that the Solar System shape is far from being the norm. However, a precise determination of the exoplanet orbital parameters is still impossible for the majority of the systems. Stability analysis is a way to put more stringent constraints on planet masses and orbits. Yet, due to the chaotic nature of the dynamics, numerical studies are too computationally prohibitive to be performed on every systems.

In this seminar I will show how progresses on the analytical understanding of the dynamics can provide an insight onto the stability of planetary systems and thus their organization.Since exoplanetary systems architecture provide a unique insight on systems formation and history, I will also show how such tools can be used in the context of planet formation and link the present architecture of systems to their initial conditions.