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Origins of Hot Jupiters

2018/01/18 by Rebekah I. Dawson, John Asher Johnson · 602 citations
Physics and Astronomy · #Astro and Planetary Science #Astrobiology #Astronomy #Astrophysics #Astrophysics and Star Formation Studies #Eccentricity (behavior) #Exoplanet #Hot Jupiter #Jupiter (rocket family) #Physics #Planet #Planetary system #Stellar, planetary, and galactic studies #astro-ph.EP

paper · pdf · doi:10.1146/annurev-astro-081817-051853

published in Annual Review of Astronomy and Astrophysics 56(1), 175-221 (Annual Reviews) · Submitted to ARAA. Comments/suggestions welcome

arxiv created 2018/01/18 · openalex publication_date 2018/09/14 · arxiv updated 2018/10/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Hot Jupiters were the first exoplanets to be discovered around main sequence stars and astonished us with their close-in orbits. They are a prime example of how exoplanets have challenged our textbook, solar-system inspired story of how planetary systems form and evolve. More than twenty years after the discovery of the first hot Jupiter, there is no consensus on their predominant origin channel. Three classes of hot Jupiter creation hypotheses have been proposed: in situ formation, disk migration, and high-eccentricity tidal migration. Although no origin channel alone satisfactorily explains all the evidence, two major origin channels together plausibly account for properties of hot Jupiters themselves and their connections to other exoplanet populations.

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