Results 61 to 70 of about 134,248 (173)
Initial Thermal States of Super‐Earth Exoplanets and Implications for Early Dynamos
Journal of Geophysical Research: Planets, Volume 130, Issue 2, February 2025.Abstract The accretion of Earth and the formation of a metallic core released a large amount of primordial heat and may have enabled its evolution into a habitable world. Metal‐silicate segregation likely occurs in super‐Earth exoplanets as well, but its influence on their initial thermal states has not been fully examined.
Nathaniel I. White, Jie Li
wiley +1 more source
Tidal Inflation is Stronger for Misaligned Neptune-sized Planets Than Aligned Ones
The Astrophysical JournalRecent observations have revealed an intriguing abundance of polar-orbiting Neptune-sized planets, many of which exhibit unusually inflated radii. While such misaligned orbits point to a complex dynamical history, the connection between their orbital ...
Ritika Sethi, Sarah C. Millholland
doaj +1 more source
Magma Ocean Evolution at Arbitrary Redox State
Journal of Geophysical Research: Planets, Volume 129, Issue 12, December 2024.Abstract Interactions between magma oceans and overlying atmospheres on young rocky planets leads to an evolving feedback of outgassing, greenhouse forcing, and mantle melt fraction. Previous studies have predominantly focused on the solidification of oxidized Earth‐similar planets, but the diversity in mean density and irradiation observed in the low ...
Harrison Nicholls +3 more
wiley +1 more source
Different Planetary Eccentricity-period (PEP) Distributions of Small and Giant Planets
The Astronomical JournalWe used the database of 1040 short-period (1 ≤ P < 200 days) exoplanets radial-velocity orbits to study the planetary eccentricity-period (PEP) distribution.
Dolev Bashi +2 more
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, 2011 . The equilibrium tide model in the weak friction approximation is used by the binary star and exoplanet communities to study the tidal evolution of short-period systems. However, each uses a slightly different approach which potentially leads to different
R. Mardling
semanticscholar +1 more source
The Astronomical JournalBefore the launch of the Kepler Space Telescope, models of low-mass planet formation predicted that convergent type I migration would often produce systems of low-mass planets in low-order mean-motion resonances.
Jacob H. Hamer, Kevin C. Schlaufman
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Journal of Geophysical Research: Planets, Volume 129, Issue 7, July 2024.Abstract This paper introduces the new Venus global ionosphere‐thermosphere model (V‐GITM) which incorporates the terrestrial GITM framework with Venus‐specific parameters, ion‐neutral chemistry, and radiative processes in order to simulate some of the observable features regarding the temperatures, composition, and dynamical structure of the Venus ...
Brandon M. Ponder +4 more
wiley +1 more source
Tidal Dissipation in Stratified and Semi-convective Regions of Giant Planets
The Astrophysical Journal, 2023 We study how stably stratified or semi-convective layers alter the tidal dissipation rates associated with the generation of internal waves in planetary interiors.
Christina M. Pontin +2 more
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Constraining stellar tidal quality factors from planet‐induced stellar spin‐up
Astronomische Nachrichten, Volume 345, Issue 5, June 2024.Abstract The dynamical evolution of tight star‐planet systems is influenced by tidal interactions between the star and the planet, as was shown recently. The rate at which spins and orbits in such a system evolve depends on the stellar and planetary tidal dissipation efficiency. Here, we present a method to constrain the modified tidal quality factor Q*
Nikoleta Ilić +3 more
wiley +1 more source
A Perfect Tidal Storm: HD 104067 Planetary Architecture Creating an Incandescent World
The Astronomical JournalThe discovery of planetary systems beyond the solar system has revealed a diversity of architectures, most of which differ significantly from our system.
Stephen R. Kane +7 more
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