Exoplanets & Planetary Science
Research on exoplanets, planetary formation, and habitability.
astro-ph.EP · 209 papersModeling and Analysis of Main-Belt Asteroidal Dust Flux and Velocity Distribution at Inner Planets
This study uses N-body simulations to model asteroidal dust flux and velocity at inner planets, finding flux-velocity decoupling.
Trajectory-Agnostic Asteroid Detection in TESS with Deep Learning
This paper introduces a deep learning W-Net method for trajectory-agnostic asteroid detection in TESS data, robust to varying speeds and directions.
An Ultra-Short Period Super-Earth and a Sub-Neptune Orbiting the K dwarf TOI-4311
Researchers discovered a multi-planetary system around K dwarf TOI-4311, including a dense super-Earth challenging planet formation theories.
Reaccumulation process after a catastrophic disruption event on a differentiated asteroid
Simulations reveal iron-rich rubble-pile asteroids form from catastrophic disruption of differentiated bodies with molten cores, creating mixed fragments.
A Hybrid Origin for the Multiple Ring-Gap Structures in the Large Protoplanetary Disk V1094 Sco: A Low-Mass Planet and Secular Gravitational Instability
V1094 Sco's protoplanetary disk shows ring-gaps formed by a low-mass planet and secular gravitational instability, suggesting a hybrid origin.
Continuous mass ablation of planets engulfed in stellar envelopes
New 3D simulations show planets engulfed by stars undergo continuous mass ablation, not sudden destruction, potentially enriching stars with lithium.
An Outer Giant Planet or Brown Dwarf in the 51 Pegasi System?
This study synthesizes decades of data to investigate a potential outer giant planet or brown dwarf in the 51 Pegasi system, finding ambiguous evidence.
Seasonal Insolation Variability on Early Venus: Implications for Energy Budget
This paper explores early Venus's insolation variability, finding that orbital parameters redistribute energy but atmospheric opacity remains the dominant climate driver.
A Uniform Determination of the Bulk Metallicities and Alpha Enrichments of Confirmed Exoplanet Systems with TRES
A uniform spectroscopic study of 625 exoplanet host stars reveals alpha-enrichment enables giant planet formation in metal-poor environments.
The dispersal of compact protoplanetary discs
New models show compact protoplanetary disc dispersal, driven by internal photoevaporation and outer radius dependence, leads to inside-out clearing.
A practical guide to implementing zero-order-hold interplanetary trajectory legs
This paper provides a practical guide and design principles for robust zero-order-hold (ZOH) transcriptions in spacecraft trajectory optimization.
On the Problem of Prognostication of Bright Kreutz Sungrazers
This paper proposes an algorithm to predict bright Kreutz sungrazers based on orbital patterns of tidally fragmented comets.
Lunar ejecta as the missing piece to resolve the lunar cratering asymmetry
Lunar impact ejecta, re-impacting the Moon, can fully explain the observed leading-trailing asymmetry in lunar crater distribution.
BOCOSUR: An all sky network for fireball detection in Uruguay
BOCOSUR is a new 20-station network in Uruguay for detecting fireballs, recovering meteorites, and determining their origins, featuring an autonomous, affordable system.
Observations of the 2023 February 27 fireball in northern Sweden using the auroral imaging system ALIS_4D
Researchers used ALIS_4D to study a 2023 Swedish fireball, determining its trajectory, origin as an Apollo object, and potential strewn field.
Coupling magma-ocean and atmospheres in spectral retrievals of sub-Neptunes
MELTYQ is a new framework that links sub-Neptune atmospheric spectra to underlying magma ocean properties, enabling direct characterization of exoplanet interiors.
Bayesian Doppler Imaging: Simultaneous Inference of Surface Maps and Geometric Parameters
A new Bayesian Doppler imaging framework simultaneously infers stellar surface maps and geometric parameters like inclination and rotation velocity.
HAT-P-70b through the Eyes of MAROON-X: Constraining Elemental Abundances of Metals and Insights on Atmosphere Dynamics
MAROON-X observations of ultra-hot Jupiter HAT-P-70b reveal 14 metal species, day-to-night winds, and a nickel enrichment, highlighting the need for accurate ionization modeling.
A New Global Chemical Equilibrium Code: Refractory Element Signatures in Super-Earths and Sub-Neptunes
A new, faster chemical equilibrium code models super-Earth/sub-Neptune atmospheres, showing how refractory elements and water shape their composition.
Origin and evolution of NiI and FeI in the coma of the interstellar comet 3I/ATLAS throughout its trajectory
Observations of interstellar comet 3I/ATLAS reveal strong, asymmetric NiI/FeI emission, explained by subsurface carbonyl sublimation and a transient heat source.
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