GAS GIANT PLANETS AS DYNAMICAL BARRIERS TO INWARD-MIGRATING SUPER-EARTHS [PDF]
, 2015 Planets of 1–4 times Earth’s size on orbits shorter than 100 days exist around 30–50% of all Sun-like stars. In fact, the Solar System is particularly outstanding in its lack of “hot super-Earths” (or “mini-Neptunes”).
A. Izidoro +4 more
semanticscholar +3 more sources
Embryo impacts and gas giant mergers – II. Diversity of hot Jupiters’ internal structure [PDF]
, 2014 We consider the origin of compact, short-period, Jupiter-mass planets. We propose that their diverse structure is caused by giant impacts of embryos and super-Earths or mergers with other gas giants during the formation and evolution of these hot ...
Shangfei Liu +7 more
semanticscholar +3 more sources
WASP-80b: a gas giant transiting a cool dwarf [PDF]
, 2013 We report the discovery of a planet transiting the star WASP-80 (1SWASP J201240.26-020838.2; 2MASS J20124017-0208391; TYC 5165-481-1; BPM 80815; V = 11.9, K = 8.4).
A. Triaud +19 more
semanticscholar +3 more sources
Volatile-to-sulfur Ratios Can Recover a Gas Giant’s Accretion History [PDF]
Astrophysical Journal Letters, 2023 The newfound ability to detect SO2 in exoplanet atmospheres presents an opportunity to measure sulfur abundances and so directly test between competing modes of planet formation.
I. Crossfield
semanticscholar +1 more source
Direct imaging and astrometric detection of a gas giant planet orbiting an accelerating star [PDF]
Science, 2022 Direct imaging of gas giant exoplanets provides information on their atmospheres and the architectures of planetary systems. However, few planets have been detected in blind surveys with direct imaging.
T. Currie +33 more
semanticscholar +1 more source
Metastable Helium Reveals an Extended Atmosphere for the Gas Giant HAT-P-18b [PDF]
Astrophysical Journal Letters, 2021 The metastable helium line at 1083 nm can be used to probe the extended upper atmospheres of close-in exoplanets and thus provide insight into their atmospheric mass loss, which is likely to be significant in sculpting their population.
Kimberly Paragas +8 more
semanticscholar +1 more source
Rapid Formation of Gas-giant Planets via Collisional Coagulation from Dust Grains to Planetary Cores [PDF]
Astrophysical Journal, 2021 Gas-giant planets, such as Jupiter, Saturn, and massive exoplanets, were formed via the gas accretion onto the solid cores, each with a mass of roughly 10 Earth masses. However, rapid radial migration due to disk–planet interaction prevents the formation
H. Kobayashi, Hidekazu Tanaka
semanticscholar +1 more source
Simulating gas giant exoplanet atmospheres with Exo-FMS: Comparing semi-grey, picket fence and correlated-k radiative-transfer schemes. [PDF]
Monthly notices of the Royal Astronomical Society, 2021 Radiative-transfer (RT) is a fundamental part of modelling exoplanet atmospheres with general circulation models (GCMs). An accurate RT scheme is required for estimates of the atmospheric energy transport and for gaining physical insight from model ...
Elspeth K. H. Lee +7 more
semanticscholar +1 more source
Observability of signatures of transport-induced chemistry in clear atmospheres of hot gas giant exoplanets [PDF]
, 2022 Transport-induced quenching, i.e., the homogenisation of chemical abundances by atmospheric advection, is thought to occur in the atmospheres of hot gas giant exoplanets. While some numerical modelling of this process exists, the three-dimensional nature
M. Zamyatina +8 more
semanticscholar +1 more source
What Can Meteorites Tell Us About the Formation of Jupiter?
AGU Advances, 2021 Gas giants like Jupiter are a fundamental component of planetary systems, but how they formed has been uncertain. Here we discuss how paleomagnetic records in meteorites of the solar nebula may tell us about Jupiter's final growth stage.
Benjamin P. Weiss, William F. Bottke
doaj +1 more source