October 25, 2021 Presentation Open Access

Antoine Petit

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{
  "inLanguage": {
    "alternateName": "eng", 
    "@type": "Language", 
    "name": "English"
  }, 
  "description": "<p>Exoplanet transit surveys have revealed the existence of numerous<br>\nmulti-planetary systems packed close to their stability limit. This feature<br>\nlikely emerges from the formation and dynamical history of the system.<br>\nUnderstanding it in detail is thus key to constrain our planet formation<br>\nscenarios. While the stability limit has been known empirically for decades,<br>\nno theoretical explanation was proposed yet. I present a mechanism driving<br>\nthe instability of tightly packed system. Based on the chaotic diffusion<br>\nalong the network of three-planet resonances, it reproduces quantitatively<br>\nthe timescale of instability obtained numerically over several order of<br>\nmagnitude in time and planet-to-star mass ratios. I discuss the observational<br>\nimplications of this model, in particular the expected differences between<br>\nSuper-Earths and terrestrial planet systems.</p>", 
  "license": "https://creativecommons.org/licenses/by/4.0/legalcode", 
  "creator": [
    {
      "affiliation": "University of Copenhagen", 
      "@id": "https://orcid.org/0000-0003-1970-1790", 
      "@type": "Person", 
      "name": "Antoine Petit"
    }
  ], 
  "url": "https://zenodo.org/record/5596398", 
  "datePublished": "2021-10-25", 
  "keywords": [
    "Exoplanets", 
    "Planet dynamics", 
    "Celestial mechanics"
  ], 
  "@context": "https://schema.org/", 
  "identifier": "https://doi.org/10.5281/zenodo.5596398", 
  "@id": "https://doi.org/10.5281/zenodo.5596398", 
  "@type": "PresentationDigitalDocument", 
  "name": "Spacing and stability of compact systems"
}