Results 31 to 40 of about 2,904 (146)
Formation of the Giant Planets [PDF]
Progress of Theoretical Physics, 1980 The structure of a gaseous envelope surrounding a icy/rocky core is studied in consideration of radiative transfer. It is found that when the core grows beyond a critical core mass, the envelope cannot be in equilibrium and collapses onto the core to form a proto-giant planet.
openaire +4 more sources
ELECTRODYNAMICS ON EXTRASOLAR GIANT PLANETS [PDF]
The Astrophysical Journal, 2014 16 pages, 22 figures, accepted by ...
Tommi Koskinen +4 more
openaire +3 more sources
Composition of massive giant planets [PDF]
Proceedings of the International Astronomical Union, 2010 AbstractThe two current models for giant planet formation are core accretion and disk instability. We discuss the core masses and overall planetary enrichment in heavy elements predicted by the two formation models, and show that both models could lead to a large range of final compositions.
Ravit Helled +2 more
openaire +4 more sources
Masses and Densities of Dwarf Planet Satellites Measured with ALMA
The Planetary Science Journal, 2023 We have used the Atacama Large Millimeter/submillimeter Array to measure precise absolute astrometric positions and detect the astrometric wobble of dwarf planet Orcus and its satellite Vanth over a complete orbit.
Michael E. Brown, Bryan J. Butler
doaj +1 more source
A Massive Hot Jupiter Orbiting a Metal-rich Early M Star Discovered in the TESS Full-frame Images
The Astronomical Journal, 2023 Observations and statistical studies have shown that giant planets are rare around M dwarfs compared with Sun-like stars. The formation mechanism of these extreme systems has remained under debate for decades. With the help of the TESS mission and ground-
Tianjun Gan +43 more
doaj +1 more source
Moist Convection in the Giant Planet Atmospheres
Remote Sensing, 2022 The outer planets of our Solar System display a myriad of interesting cloud features, of different colors and sizes. The differences between the types of observed clouds suggest a complex interplay between the dynamics and chemistry at play in these ...
Csaba Palotai +3 more
doaj +1 more source
Discovery and Dynamics of the Nontransiting Planet Kepler-139f
The Astrophysical Journal LettersAmong the ways that an outer giant planet can alter the architecture of an inner planetary system is by tilting the orbits of the inner planets and reducing their mutual transit probabilities.
Caleb Lammers, Joshua N. Winn
doaj +1 more source
Formation of Giant Planets [PDF]
AIP Conference Proceedings, 2004 This is a descriptive and non‐mathematical summary of giant planet formation theories. There are two end‐member models, core accretion and disk instability. In the core accretion model, several to ten Earth masses of solid (ice and rock) accumulate and this promotes subsequent gas accretion.
openaire +4 more sources
The fate of planetary cores in giant and ice-giant planets [PDF]
Astronomy & Astrophysics, 2019 Context. The Juno probe that currently orbits Jupiter measures its gravitational moments with great accuracy. Preliminary results suggest that the core of the planet may be eroded. While great attention has been paid to the material properties of elements constituting the envelope, little is known about those that constitute the core.
Mazevet, S., Musella, R., Guyot, F.
openaire +6 more sources
JWST Directly Images Giant Planet Candidates Around Two Metal-polluted White Dwarf Stars
The Astrophysical Journal LettersWe report the discovery of two directly imaged, giant planet candidates orbiting the metal-rich, hydrogen atmosphere white dwarfs WD 1202−232 and WD 2105−82. JWST’s Mid-Infrared Instrument (MIRI) data on these two stars show a nearby resolved source at a
Susan E. Mullally +11 more
doaj +1 more source