I am a postdoctoral researcher at the Department of Astronomy and Theoretical Physics at Lund University.
My main research interests are the dynamical evolution of planetary systems, from their formation to their observation.
My main collaborators here are Anders Johansen and
Melvyn B. Davies.
I completed my Ph.D. in June 2019 at the Ephemeris and Celestial Mechanics Institute (IMCCE)
of the Paris Observatory under the supervision of Jacques Laskar
and Gwenaël Boué.
I mainly worked on the development of simple criteria to determine the stability of exoplanetary systems.
Celestial and planet dynamics
Stability of planetary systems
Statistics and architecture of planetary systems
Numerical integration methods
AMD-stability and the classification of planetary systems
The AMD or Angular Momentum Deficit (AMD) is a quantity that measures the dynamical excitment of a planetary system.
A large AMD means that planet orbit may cross, leading to the destruction of the planetary system.
I used it to classify the exoplanetary systems into two categories: the AMD-stable ones that will remain
stable over their lifetime because their AMD is too low to allow for collision and the AMD-unstable were
the AMD alone cannot ensure the stability of the system and that should be studied in more details.
An AMD-stability calculator is available on exoplanet.eu for selected systems.
My works with J. Laskar and G. Boué on the AMD-stability are published in the articles:
AMD-stability and the classification of planetary systems, J. Laskar & A. Petit, A&A 2017
AMD-stability in the presence of first-order mean motion resonances , A. Petit, L. Laskar & G. Boué, A&A 2017
Hill stability in the AMD framework , A. Petit, L. Laskar & G. Boué, A&A 2018