Results 11 to 20 of about 3,207,512 (305)
Petroleum Exploration and Development, 2015 Based on the latest geological, seismic, drilling and outcrop data in the Sichuan Basin, the geological structure and evolution history of Gaoshiti-Moxi paleo-uplift was studied to find out controlling factors of the Sinian-Cambrian Anyue giant gas field.
Guoqi WEI +7 more
doaj +2 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
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
The mass of gas giant planets: Is Saturn a failed gas giant?
Astronomy & Astrophysics, 2023 The formation history of giant planets inside and outside the Solar System remains unknown. We suggest that runaway gas accretion is initiated only at a mass of ∼100 M⊕ and that this mass corresponds to the transition to a gas giant, a planet whose ...
R. Helled
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
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Retention of Long-period Gas Giant Planets: Type II Migration Revisited [PDF]
, 2020 During their formation, emerging protoplanets tidally interact with their natal disks. Proto-gas-giant planets, with Hills radius larger than the disk thickness, open gaps and quench gas flow in the vicinity of their orbits.
Yi-Xian Chen +4 more
semanticscholar +1 more source
Forming Gas Giants around a Range of Protostellar M-dwarfs by Gas Disk Gravitational Instability
The Astrophysical Journal, 2023 Recent discoveries of gas giant exoplanets around M-dwarfs from transiting and radial velocity surveys are difficult to explain with core-accretion models. We present here a homogeneous suite of 162 models of gravitationally unstable gaseous disks. These
Alan P. Boss, Shubham Kanodia
doaj +1 more source