Exoplanets & Planetary Science
Research on exoplanets, planetary formation, and habitability.
astro-ph.EP · 210 papersRV and TTV Measurements of Two Transiting Long-Period Giants around TOI-4600
New observations refine parameters and detect significant transit timing variations for the long-period giant exoplanets TOI-4600b and c.
Approximating Periodic Orbits with Algebraic Curves and Related Minimal Problems
This paper introduces a method to approximate periodic orbits in the CR3BP using algebraic curves, enabling minimal problems for spacecraft navigation.
Prediction of Celestial Pole Offsets Based on Sliding Window and Bivariate Least Squares Fitting
A new algorithm uses a 900-day sliding window and bivariate least squares fitting to significantly improve Celestial Pole Offset prediction accuracy.
Measuring Apsidal Clustering
This paper introduces a new conditional-likelihood method to measure apsidal clustering in the outer solar system, finding reduced significance for the phenomenon.
Exploring the conditions for forming planetesimals by the streaming instability and planetary systems by pebble accretion
This paper identifies optimal protoplanetary disc conditions for forming diverse planetary systems via streaming instability and pebble accretion.
Equifinality of Venus-like CO$_2$ Atmospheres
Venus's massive CO2 atmosphere is an "equifinal outcome," meaning it could have formed through multiple distinct evolutionary pathways, not just one.
A multifluid approach for polydisperse pebble accretion: From particles to fluids, establishing the multifluid framework
This paper validates a multifluid framework for polydisperse pebble accretion, showing how gas disc evolution and pebble impact planet growth.
Suppression of Resonant Overstability at Sharp Migration Gradients
Sharp migration gradients at protoplanetary disk edges can suppress resonant overstability, preventing the disruption of planet-disk commensurabilities.
Euclid: Asteroid rotation periods from the Euclid Ecliptic Survey
Researchers used Euclid data to determine spin periods for 889 asteroids, including 16 super-fast rotators, with 93% being first-time measurements.
Disc lifetime distribution as a function of the mass of host star
This study derives protoplanetary disc lifetime distributions, revealing a strong dependence on host star mass, with lower-mass stars having longer-lived discs.
Oxygen Isotopic Compositions of Chondrules as Probes of Solar Protoplanetary Disk Formation
Simulations explore oxygen isotopic compositions of chondrules in the protoplanetary disk, finding conditions for carbonaceous chondrites.
Revealing a Systematic High-latitude Current Sheet at Jupiter
Juno data reveals a systematic, persistent current sheet at Jupiter's high-latitude nightside, challenging the traditional planetary magnetotail model.
Solar Energetic Particle Reflection by Precursor ICMEs: Multi-spacecraft Observations of Bi-Directional Electron Beams at 1 AU
Multi-spacecraft observations reveal solar energetic electrons reflect off precursor ICMEs beyond 1 AU, creating hazardous bi-directional beams.
Hourly radio variability of PDS70c from time-differential photometry
PDS70c exhibits hourly radio variability, detected via time-differential photometry, suggesting emission from accretion shocks on its circum-planetary disk.
A Monte Carlo method for tracking dust properties during coagulation in protoplanetary disks
This paper introduces a new Monte Carlo method for dust coagulation in protoplanetary disks that strictly conserves dust properties, improving accuracy.
ORCHARD: A General Planetary Evolution Code
ORCHARD is a versatile planetary evolution code modeling structures from terrestrial to gas giant planets up to 10 Jupiter masses.
A Theoretical Study of the Structure and Elemental Abundances of HD 20794
A MESA-based stellar evolution study of the metal-poor G-dwarf HD 20794 confirms standard stellar theory and its preserved chemical signatures.
The spin state of asteroid Apophis and a prediction of its change during the 2029 close encounter with Earth
This paper predicts asteroid Apophis's spin state change during its 2029 Earth close encounter using photometric observations.
The formation of circumbinary planets through disc fragmentation
Gravitational fragmentation of circumbinary discs is a viable pathway for forming wide-orbit gas giant planets around binary stars.
Uncovering the Rapidly Evolving Orbits of the Dynamic TOI-201 System
This paper characterizes the dynamic TOI-201 exoplanet system, revealing its rapid orbital evolution and that its co-transiting configuration will end in 200 years.
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