Origins of Hot Jupiters

  title={Origins of Hot Jupiters},
  author={Rebekah I. Dawson and John Asher Johnson},
  journal={Annual Review of Astronomy and Astrophysics},
  • R. Dawson, J. Johnson
  • Published 18 January 2018
  • Geology, Physics
  • Annual Review of Astronomy and Astrophysics
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… 

Figures and Tables from this paper

TESS Spots a Hot Jupiter with an Inner Transiting Neptune
Hot Jupiters are rarely accompanied by other planets within a factor of a few in orbital distance. Previously, only two such systems have been found. Here, we report the discovery of a third system
In situ formation of hot Jupiters with companion super-Earths
Observations have confirmed the existence of multiple-planet systems containing a hot Jupiter and smaller planetary companions. Examples include WASP-47, Kepler-730, and TOI-1130. We examine the
No further evidence for a transiting inner companion to the hot Jupiter HATS‐50b
  • M. Mallonn
  • Geology, Physics
    Astronomische Nachrichten
  • 2019
Most hot Jupiter exoplanets do not have a nearby planetary companion in their planetary system. One remarkable exception is the system of WASP-47 with an inner and outer nearby companion to a hot
Origins of Hot Jupiters from the Stellar Obliquity Distribution
The obliquity of a star, or the angle between its spin axis and the average orbit normal of its companion planets, provides a unique constraint on that system’s evolutionary history. Unlike the solar
TESS Giants Transiting Giants. II. The Hottest Jupiters Orbiting Evolved Stars
Giant planets on short-period orbits are predicted to be inflated and eventually engulfed by their host stars. However, the detailed timescales and stages of these processes are not well known. Here,
Warm Jupiters in TESS Full-frame Images: A Catalog and Observed Eccentricity Distribution for Year 1
Warm Jupiters—defined here as planets larger than 6 Earth radii with orbital periods of 8–200 days—are a key missing piece in our understanding of how planetary systems form and evolve. It is
Giant Outer Transiting Exoplanet Mass (GOT ‘EM) Survey. II. Discovery of a Failed Hot Jupiter on a 2.7 Yr, Highly Eccentric Orbit
Radial velocity (RV) surveys have discovered giant exoplanets on au-scale orbits with a broad distribution of eccentricities. Those with the most eccentric orbits are valuable laboratories for
TOI-3362b: A Proto Hot Jupiter Undergoing High-eccentricity Tidal Migration
High-eccentricity tidal migration is a possible way for giant planets to be placed in short-period orbits. If this happens often, one would expect to catch proto hot Jupiters on highly elliptical
Highlights of exoplanetary science from Spitzer
Observations of extrasolar planets were not projected to be a substantial part of the Spitzer Space Telescope’s mission when it was conceived and designed. Nevertheless, Spitzer was the first
Hot Jupiters: Origins, Structure, Atmospheres
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


LAMOST telescope reveals that Neptunian cousins of hot Jupiters are mostly single offspring of stars that are rich in heavy elements
A population of short-period, Neptune-size planets sharing key similarities with hot Jupiters is discovered: both populations are preferentially hosted by metal-rich stars, and both are preferentialially found in Kepler systems with single-transiting planets.
Moderately eccentric warm Jupiters from secular interactions with exterior companions
Recent studies have proposed that most warm Jupiters (WJs, giant planets with semi-major axes in the range of 0.1-1 AU) probably form in-situ, or arrive in their observed orbits through disk
Relationship Between Thermal Tides and Radius Excess
Close-in extrasolar gas giants -- the hot Jupiters -- display departures in radius above the zero-temperature solution, the radius excess, that are anomalously high. The radius excess of hot Jupiters
Diffusive Tidal Evolution for Migrating Hot Jupiters
I consider a Jovian planet on a highly eccentric orbit around its host star, a situation produced by secular interactions with its planetary or stellar companions. The tidal interactions at every
The Rossiter-McLaughlin effect in Exoplanet Research
The Rossiter-McLaughlin effect occurs during a planet's transit. It provides the main means of measuring the sky-projected spin-orbit angle between a planet's orbital plane, and its host star's
Astrophysics of Planet Formation Arras P, Socrates A
  • Ap. J
  • 2010
Non-Keplerian Dynamics of Exoplanets
  • 2010