Results 51 to 60 of about 4,196,309 (173)
Investigating the Origins of Hot Neptunes from Radial Velocity Data
The Astronomical JournalHot Neptunes are extrasolar planets that are similar in size to Neptune in our solar system but are much closer to their host stars, completing an orbit in 10 days or less. The origin of hot Neptunes is not fully understood.
Sophie Y. Zheng
doaj +1 more source
The Astrophysical Journal, 2023 Protoplanets formed in a marginally gravitationally unstable (MGU) disk by either core accretion or disk instability will be subject to dynamical interactions with massive spiral arms, possibly resulting in inward or outward orbital migration, mergers ...
Alan P. Boss
doaj +1 more source
Journal of Computer Assisted Learning, Volume 42, Issue 4, August 2026.ABSTRACT Background Video data provides rich opportunities to examine student behaviour in game‐based learning environments, capturing not only observable actions but also subtle indicators of cognitive engagement. However, traditional video analysis is labor‐intensive, and current applications of AI to this task are limited by models trained on ...
Yiqiu Zhou +7 more
wiley +1 more source
Formation of Close-in Neptunes around Low-mass Stars through Breaking Resonant Chains
The Astrophysical JournalConventional planet formation theories predict a paucity of massive planets around small stars, especially very low-mass (0.1−0.3 M _⊙ ) mid-to-late M dwarfs. Such tiny stars are expected to form planets of terrestrial sizes but not much bigger. However,
Donald Liveoak, Sarah C. Millholland
doaj +1 more source
Massive Rocky Planets May Suppress Deep Melting
AGU Advances, Volume 7, Issue 4, August 2026.Abstract Melting properties of silicates are critical to understanding the thermal evolution of rocky planetary interiors. In the deep mantles of massive rocky planets, post‐post‐spinel Mg2SiO4 ${\text{Mg}}_{2}{\text{SiO}}_{4}$ is potentially one of the most abundant mineral phases, yet its melting behavior remains unconstrained. Here, we determine the
Donghao Zheng, Yihang Peng, Jie Deng
wiley +1 more source
exoplanet-dev/jaxoplanet: Astronomical time series analysis with JAX
<h2>What's Changed</h2> <ul> <li>Updating and applying pre-commit by @dfm in https://github.com/exoplanet-dev/jaxoplanet/pull/16</li> <li>Adding interface for arbitrary order limb darkening by @dfm in https://github ...
Degen, David +6 more
core +1 more source
The Astrophysical JournalModels based on variable miscibility among hydrogen, molten silicate, and molten iron, coupled with atmospheric escape, can reproduce the observed occurrence density structure of sub-Neptunes and super-Earths in mass–radius space.
Edward D. Young, Aaron Werlen
doaj +1 more source
A Theory for the Global Wind Energy Dissipation Across Climates
AGU Advances, Volume 7, Issue 5, August 2026.Abstract Atmospheric winds play a key role in shaping climate, ecosystems, and infrastructure. The energy that drives the winds is generated by the atmospheric heat engine. However, traditional entropy‐budget descriptions of this heat engine rely on poorly constrained microscale processes, limiting their predictive power.
Malte F. Jansen +2 more
wiley +1 more source
, 2018 With the discovery of planets beyond our solar system 25 years ago, exoplanet research has expanded dramatically, with new state-of-the-art ground-based and space-based missions dedicated to their discovery and characterisation.
Perryman, Michael
core +1 more source
Dynamic mineral clouds on HD 189733b. II. Monte Carlo radiative transfer for 3D cloudy exoplanet atmospheres : combining scattering and emission spectra [PDF]
, 2017 G.L. and Ch.H. highlight the financial support of the European community under the FP7 ERC starting grant 257431.Context. As the 3D spatial properties of exoplanet atmospheres are being observed in increasing detail by current and new generations of ...
I. Dobbs-Dixon +9 more
core +1 more source