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Related papers: Testing the Origin of Hot Jupiters with Atmospheri…

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We provide a brief review of many aspects of the planetary physics of hot Jupiters. Our aim is to cover most of the major areas of current study while providing the reader with additional references for more detailed follow-up. We first…

Earth and Planetary Astrophysics · Physics 2021-03-17 Jonathan J. Fortney , Rebekah I. Dawson , Thaddeus D. Komacek

The origin of hot Jupiters -- gas giant exoplanets orbiting very close to their host stars -- is a long-standing puzzle. Planet formation theories suggest that such planets are unlikely to have formed in-situ but instead may have formed at…

Earth and Planetary Astrophysics · Physics 2015-06-22 Nikku Madhusudhan , Mustafa A. Amin , Grant M. Kennedy

Warm giant planets with orbital periods of tens of days exhibit a positive correlation between mass and eccentricity. We interpret this trend as the outcome of planet-planet scattering, representing a transition from collision-dominated…

Earth and Planetary Astrophysics · Physics 2026-03-25 Jiayin Dong , Eve J. Lee , Eiichiro Kokubo , Ruth Murray-Clay , Arvind Gupta

The origin of warm Jupiters (gas giant planets with periods between 10 and 200 days) is an open question in exoplanet formation and evolution. We investigate a particular migration theory in which a warm Jupiter is coupled to a perturbing…

Earth and Planetary Astrophysics · Physics 2021-03-31 Jonathan M. Jackson , Rebekah I. Dawson , Andrew Shannon , Cristobal Petrovich

The study of exoplanet atmospheres showed large diversity compared to the planets in our solar system. Especially Jupiter type exoplanets orbiting their host star in close orbits, the so-called hot and ultra-hot Jupiters, have been studied…

Earth and Planetary Astrophysics · Physics 2021-02-03 Engin Keles

The origin of hot Jupiters remains a key open question. In the high-eccentricity migration scenario, traditional coreless models predict a strict tidal exclusion zone within $\sim 2.7$ tidal radii $r_\textrm{t}$, in which giant planets are…

Earth and Planetary Astrophysics · Physics 2026-05-15 Qianli Fan , Shang-Fei Liu

We investigate the origin of the measured over-abundance of alkali metals in the atmospheres of hot gas giants, relative to both their host stars and their atmospheric water abundances. We show that formation exterior to the water snow line…

Earth and Planetary Astrophysics · Physics 2021-10-27 Tom Hands , Ravit Helled

The elemental compositions of planet hosting stars serve as proxies for the primordial compositions of the protoplanetary disks within which the planets form. The temperature profile of the disk governs the condensation fronts of various…

Earth and Planetary Astrophysics · Physics 2017-02-01 John M. Brewer , Debra A. Fischer , Nikku Madhusudhan

We use a population synthesis model that includes pebbles and gas accretion, planetary migration, and a simplified chemistry scheme to study the formation of hot-Jupiters. Models have been proposed that these planets can either originate…

Earth and Planetary Astrophysics · Physics 2017-03-22 Mohamad Ali-Dib

(Abridged) The chemical composition of planetary atmospheres has long been thought to store information regarding where and when a planet accretes its material. Predicting this chemical composition theoretically is a crucial step in linking…

Earth and Planetary Astrophysics · Physics 2020-10-28 Alex J. Cridland , Ewine F. van Dishoeck , Matthew Alessi , Ralph E. Pudritz

Jupiter's atmosphere is enriched with heavy elements by a factor of about 3 compared to proto-solar. The origin of this enrichment and whether it represent the bulk composition of the planetary envelope remain unknown. Internal structure…

Earth and Planetary Astrophysics · Physics 2022-03-02 Sho Shibata , Ravit Helled

Disk migration and high-eccentricity migration are two well-studied theories to explain the formation of hot Jupiters. The former predicts that these planets can migrate up until the planet-star Roche separation ($a_{Roche}$) and the latter…

Earth and Planetary Astrophysics · Physics 2017-08-30 Benjamin E. Nelson , Eric B. Ford , Frederic A. Rasio

Hot Jupiters are giant Jupiter-like exoplanets that orbit 100x closer to their host stars than Jupiter does to the Sun. These planets presumably form in the outer part of the primordial disc from which both the central star and surrounding…

Solar and Stellar Astrophysics · Physics 2016-06-21 JF Donati , C Moutou , L Malo , C Baruteau , L Yu , E Hebrard , G Hussain , S Alencar , F Menard , J Bouvier , P Petit , M Takami , R Doyon , A Collier Cameron

The origin of Jupiter-mass planets with orbital periods of only a few days is still uncertain. It is widely believed that these planets formed near the water-ice line of the protoplanetary disk, and subsequently migrated into much smaller…

Earth and Planetary Astrophysics · Physics 2016-07-06 Kevin C. Schlaufman , Joshua N. Winn

The origin of hot Jupiters is the oldest problem in exoplanet astrophysics. Hot Jupiters formed in situ or via disk migration should be in place just a few Myr after the formation of their host stars. On the other hand, hot Jupiters formed…

Earth and Planetary Astrophysics · Physics 2026-01-22 Stephen P. Schmidt , Kevin C. Schlaufman

Hot Jupiters may have formed in situ, or been delivered to their observed short periods through one of two categories of migration mechanisms: disk migration or high-eccentricity migration. If hot Jupiters were delivered by…

Earth and Planetary Astrophysics · Physics 2023-02-08 Jonathan M. Jackson , Rebekah I. Dawson , Billy Quarles , Jiayin Dong

We present results from an atmospheric circulation study of nine hot Jupiters that comprise a large transmission spectral survey using the Hubble and Spitzer Space Telescopes. These observations exhibit a range of spectral behavior over…

Earth and Planetary Astrophysics · Physics 2016-04-20 Tiffany Kataria , David K. Sing , Nikole K. Lewis , Channon Visscher , Adam P. Showman , Jonathan J. Fortney , Mark S. Marley

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…

Earth and Planetary Astrophysics · Physics 2018-10-17 Rebekah I. Dawson , John Asher Johnson

The discovery of hot Jupiters has challenged the classical planet formation theory. Although various formation mechanisms have been proposed, the dominant channel and relative contributions remain unclear. Furthermore, hot Jupiters offer a…

Earth and Planetary Astrophysics · Physics 2025-12-25 Di-Chang Chen , Ji-Wei Xie , Ji-Lin Zhou , Fei Dai , Bo Ma , Songhu Wang , Chao Liu

Thermal emission has now been observed from many dozens of exoplanet atmospheres, opening the gateway to population-level characterization. Here, we provide theoretical explanations for observed trends in $\textit{Spitzer}$ IRAC channel 1…

Earth and Planetary Astrophysics · Physics 2022-01-07 Jayesh M Goyal , Nikole K Lewis , Hannah R Wakeford , Ryan J MacDonald , Nathan J Mayne
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