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Related papers: Hot Jupiters: Origins, Structure, Atmospheres

200 papers

Explaining the origin and evolution of exoplanetary "hot Jupiters" remains a significant challenge. One possible mechanism for their production is planet-planet interactions, which produces hot Jupiters from planets born far from their host…

Earth and Planetary Astrophysics · Physics 2017-06-14 Michael M. Shara , Jarrod R. Hurley , Rosemary A. Mardling

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

We give an overview of our current understanding of the structure of gas giant planets, from Jupiter and Saturn to extrasolar giant planets. We focus on addressing what high-pressure laboratory experiments on hydrogen and helium can help to…

Astrophysics · Physics 2008-11-26 Jonathan J. Fortney

Here we describe the observations and the resulting constraints on the upper atmosphere (thermosphere and exosphere) of the "Hot-Jupiters". In particular, observations and theoretical modeling of Hot-Jupiter evaporation are described. The…

Earth and Planetary Astrophysics · Physics 2015-05-13 A. Lecavelier des Etangs

We investigate the formation of multiple-planet systems in the presence of a hot Jupiter using extended N-body simulations that are performed simultaneously with semi-analytic calculations. Our primary aims are to describe the planet…

Earth and Planetary Astrophysics · Physics 2015-06-19 Masahiro Ogihara , Hiroshi Kobayashi , Shu-ichiro Inutsuka

The Juno mission has revolutionized and challenged our understanding of Jupiter. As Juno transitioned to its extended mission, we review the major findings of Jupiter's internal structure relevant to understanding Jupiter's formation and…

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

We know that giant planets played a crucial role in the making of our Solar System. The discovery of giant planets orbiting other stars is a formidable opportunity to learn more about these objects, what is their composition, how various…

Astrophysics · Physics 2009-11-10 Tristan Guillot

The formation history of giant planets determines their primordial structure and consequent evolution. We simulate various formation paths of Jupiter to determine its primordial entropy, and find that a common outcome is for proto-Jupiter…

Earth and Planetary Astrophysics · Physics 2018-05-02 Andrew Cumming , Ravit Helled , Julia Venturini

Royal Society Discussion Meeting (2013) `Characterizing exoplanets'. Of the 900+ confirmed exoplanets discovered since 1995 for which we have constraints on their mass (i.e., not including Kepler candidates), 75% have masses larger than…

Earth and Planetary Astrophysics · Physics 2014-03-19 Leigh N. Fletcher , Patrick G. J. Irwin , Joanna K. Barstow , Remco J. de Kok , Jae-Min Lee , Suzanne Aigrain

The advent of high-resolution spectroscopy as a method for exoplanet atmospheric characterization has expanded our capability to study non-transiting planets, increasing the number of planets accessible for observation. Many of the most…

Earth and Planetary Astrophysics · Physics 2021-12-22 Isaac Malsky , Emily Rauscher , Eliza M. R. Kempton , Michael Roman , Deryl Long , Caleb K. Harada

This white paper discusses a repurposed mission for the Kepler spacecraft that focusses on solving outstanding problems in planet formation and evolution by targeting the study of the hot Jupiter population of young stars. This mission can…

Of the over 800 exoplanets detected to date, over half are on non-circular orbits, with eccentricities as high as 0.93. Such orbits lead to time-variable stellar heating, which has implications for the planet's atmospheric dynamical regime.…

Earth and Planetary Astrophysics · Physics 2015-06-11 Tiffany Kataria , Adam P. Showman , Nikole K. Lewis , Jonathan J. Fortney , Mark S. Marley , Richard S. Freedman

The key to understanding an extrasolar giant planet's spectrum--and hence its detectability and evolution--lies with its atmosphere. Now that direct observations of thermal emission from extrasolar giant planets are in hand, atmosphere…

Astrophysics · Physics 2007-05-23 Mark S. Marley , Jonathan Fortney , Sara Seager , Travis Barman

The unexpectedly large radii of transiting hot Jupiters have led to many proposals for the physical mechanisms responsible for heating their interiors. While it has been shown that hot Jupiters reinflate as their host stars brighten due to…

Earth and Planetary Astrophysics · Physics 2026-03-03 Stephen P. Schmidt , Daniel P. Thorngren , Kevin C. Schlaufman

Efforts to characterize extrasolar giant planet (EGP) atmospheres have so far emphasized planets within 0.05 AU of their stars. Despite this focus, known EGPs populate a continuum of orbital separations from canonical hot Jupiter values…

Earth and Planetary Astrophysics · Physics 2015-02-12 Adam P. Showman , Nikole K. Lewis , Jonathan J. Fortney

I review the major open science questions in exoplanet atmospheres. These are mainly focused in the areas of understanding atmospheric physics, the atmosphere as a window into other realms of planetary physics, and the atmosphere is a…

Earth and Planetary Astrophysics · Physics 2024-05-09 Jonathan J. Fortney

The characteristics of irradiated solar system planetary atmospheres have been studied for decades, consequently modern planetary science benefits from an exhaustive body of ground- and space-based data. The study of extrasolar planetary…

Astrophysics · Physics 2008-09-29 Mark S. Marley

Discovery of hot Jupiter exo-planets, those with anomalously inflated size and low density relative to Jupiter, has evoked much discussion as to possible sources of internal heat production. But to date, no explanations have come forth that…

Astrophysics · Physics 2007-05-23 J. Marvin Herndon

We present the results of recent observations of phase-dependent variations in brightness designed to characterize the atmospheres of hot Jupiters. In particular, we focus on recent observations of the transiting planet HD 189733b at 8…

Astrophysics · Physics 2007-10-17 H. A. Knutson