Evolution of Exoplanets and their Parent Stars
Tristan Guillot (LAGRANGE), Douglas N. C. Lin, Pierre Morel, (LAGRANGE), Mathieu Havel (LAGRANGE), Vivien Parmentier (LAGRANGE)

TL;DR
This paper reviews the evolution, composition, and formation of exoplanets, especially giant gaseous ones, highlighting how their properties relate to their host stars and the implications for planetary development.
Contribution
It provides a comprehensive review of exoplanet evolution, linking planetary characteristics with stellar properties and emphasizing the role of accretion and stellar dissipation in planetary formation.
Findings
Giant exoplanets have large radii due to hydrogen-helium envelopes.
Planetary heavy element content correlates with stellar metallicity.
Distribution of massive planets varies with host star type.
Abstract
Studying exoplanets with their parent stars is crucial to understand their population, formation and history. We review some of the key questions regarding their evolution with particular emphasis on giant gaseous exoplanets orbiting close to solar-type stars. For masses above that of Saturn, transiting exoplanets have large radii indicative of the presence of a massive hydrogen-helium envelope. Theoretical models show that this envelope progressively cools and contracts with a rate of energy loss inversely proportional to the planetary age. The combined measurement of planetary mass, radius and a constraint on the (stellar) age enables a global determination of the amount of heavy elements present in the planet interior. The comparison with stellar metallicity shows a correlation between the two, indicating that accretion played a crucial role in the formation of planets. The dynamical…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsStellar, planetary, and galactic studies · Astro and Planetary Science · Astronomy and Astrophysical Research
