109 papers
This paper proposes a low-energy, low-thrust trajectory design for a mission touring Saturn's inner large moons (Rhea, Dione, Tethys, Enceladus, and Mimas) that utilizes J2-perturbed three-body dynamics and invariant manifolds to achieve full surface coverage while minimizing fuel consumption and maximizing observation time compared to traditional flyby missions.
This study uses thermochemical modeling to demonstrate that dust-depleted inner regions of protoplanetary disks around Herbig stars are molecular-rich environments where dust sublimation significantly enhances SiO abundance, making CO and SiO overtone lines key tracers for understanding terrestrial planet formation.
This paper presents end-to-end numerical simulations demonstrating that while non-common path aberration compensation significantly reduces residual starlight in the SAXO+ system, a dark hole loop achieves a superior factor of 200 reduction, with the study also establishing that calibrating pyramid optical gains is beneficial for single-loop systems but unnecessary for the dual-loop SAXO+ architecture.
This paper proposes that a reaction-diffusion model featuring a moving reaction front driven by protostellar outflows explains the observed evolutionary transition of young stellar disks from structureless Class 0 systems to ring-gap structured Class II systems.
This study demonstrates that incorporating the comprehensive CRAHCN-O chemical network into photochemical simulations reveals that hydrocarbon photochemical shielding significantly enhances the production of key prebiotic feedstock molecules like HCN in M-star irradiated exoplanet atmospheres compared to simpler networks, highlighting the critical importance of detailed chemical kinetics in modeling prebiotic potential.
One hundred years after Bernard Lyot's pioneering work, the PICSARR project presents new high-precision polarimetric observations of Venus that confirm historical particle size models while revealing significant short-term variability and distinct ultraviolet polarization anomalies in the polar regions, suggesting lower cloud tops and a larger Rayleigh scattering component compared to equatorial areas.
This paper presents multi-epoch optical spectroscopy of the interstellar comet 3I/ATLAS from late 2025 to early 2026, revealing post-perihelion compositional shifts—including enhanced metal and CO production and a gradual volatile decline—that suggest the activation of subsurface material, seasonal heterogeneity, and potential metal carbonyl chemistry.
This study uses hydrodynamical simulations and synthetic ALMA imaging to demonstrate that multiple super-thermal mass planets create complex, non-superimposable dust structures and eccentric orbits that obscure gaps and suppress grain growth, thereby complicating the interpretation of disk substructures and the inference of planetary properties.
This paper confirms the six-year persistence of highly coherent 25.01-hour and 23.1-minute periodic signals in the white dwarf WD 1054-226, revealing a stable, optically thick, edge-on debris ring that serves as a key laboratory for studying remnant planetary systems.
By analyzing the two recent catastrophic collision events in the Fomalhaut system, this study employs a statistical model to constrain the main belt's total mass to 200–360 Earth masses and predicts a high rate of future collisions, indicating that continued monitoring is essential for understanding the system's planetesimal population.
This paper reports the first isotopic ratio measurements for an interstellar comet, 3I/ATLAS, revealing elevated nitrogen and carbon ratios that suggest the object originated in the outer disc of an older, low-metallicity star.
This paper demonstrates that a discrete polarimetric tomography method, when applied to synthetic multi-spacecraft white-light images, effectively reconstructs the 3D density structure and front location of coronal mass ejections with higher accuracy using polarimetric data and at least four observing spacecraft compared to non-polarimetric approaches.
The paper reports that comet 3I/ATLAS, originating from another planetary system, exhibits a deuterium-to-hydrogen ratio in its water exceeding Earth's ocean values by over 40 times and typical Solar System cometary values by over 30 times, indicating its water formed under significantly colder and less irradiated conditions than those found in our own solar system.
High-resolution multi-wavelength ALMA observations of the HD 34282 protoplanetary disk reveal a bright azimuthal arc with properties consistent with dust trapping in a vortex, including a lower spectral index, wavelength-dependent width, and specific peak offsets at shorter wavelengths.
This paper presents isotopic measurements of the interstellar object 3I/ATLAS, revealing extreme deuterium and carbon ratios that indicate it formed over 10 billion years ago in a cold, metal-poor environment within the early Milky Way, making it a unique preserved fragment of an ancient planetary system unlike any known Solar System body.
Using high-resolution transmission spectroscopy from the Gemini-South telescope, this study successfully characterizes the atmosphere of the temperate super-Earth L 98-59 d, marking the first ground-based detection of a molecular species (hydrogen sulfide) in a super-Earth and suggesting a cloud-free atmosphere with volcanic outgassing.
This paper introduces SPONCHPOP, a novel planet population synthesis model that incorporates multi-phase sulfur chemistry to demonstrate how volatile sulfur serves as a powerful diagnostic tool for tracing gas giant formation histories and predicting the sulfur budgets of rocky planets.
This study characterizes the bright K-dwarf system TOI-5789, revealing a mutually inclined architecture with four planets including a promising sub-Neptune (TOI-5789 c) ideal for atmospheric studies, while ruling out an outer giant planet as the cause of the system's dynamical tilt.
This study presents a modified commercial laser mass spectrometer that serves as a validated, high-fidelity analog for the Mars Organic Molecule Analyzer (MOMA), enabling rapid testing, structural identification of organics in mineral matrices, and the generation of pre-flight reference data to support the upcoming Rosalind Franklin rover mission.
This paper proposes an efficient grid-search method enhanced by newly derived analytical energy conditions within the Sun-Earth/Moon planar bicircular restricted four-body problem to construct high-success-rate, low-energy ballistic lunar transfers that outperform conventional approaches.