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19962026
most citedThe Gaia mission

7.1k citations

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651 papers · 1 filter

astro-ph.EP2026★ 1 cited

Elastic Properties of Titan Tholins Revealed by Brillouin Spectroscopy

Mark A. Johnson, Jose R. Montes-Bojorquez, Adis Husic +7

Titan tholins, complex organic solids synthesized by simulating photochemical processes in Titan's atmosphere, are widely regarded as analogs to organic surface materials on the Sa…

astro-ph.EP2026

Size Constraints for the Pre-atmospheric Parent Bodies of Ordinary Chondrites

Juan A. Sanchez, David C. Cantillo, Adam Battle +7

The study of S-complex near-Earth objects (NEOs), the parent bodies of ordinary chondrites, has shown that they are dominated by asteroids with LL chondrite-like compositions. This…

astro-ph.EP2026

Kilometre-scale Jovian moon characterized for a potential JUICE flyby

Juan Luis Rizos, Jose Maria Gomez-Limon, Yucel Kilic +51

Jupiter's irregular satellites are thought to be relics of early Solar System planetesimals. However, their small sizes, large distances from Earth and close angular proximity to J…

astro-ph.EP2026

Chondrite Parent Bodies as Escaped Satellites of Proto-Planetary Embryos

Harold F. Levison, Rogerio Deienno, Kevin J. Walsh +4

Chondrites are composed of formerly partially molten material, known as chondrules, surrounded by fine-grained matrix. They date from the earliest times in Solar System history. Ho…

astro-ph.EP2026

Distant TNO Inclinations as a Constraint on Primordial Cluster Perturbations in the Presence of Planet Nine

Avni Bansal, Ian Brunton, Konstantin Batygin +2

The Sun was almost certainly born in a stellar cluster, implying some degree of external forcing from neighboring stars during the Solar System's infancy. Published estimates of th…

astro-ph.EP2026

Comparing Monte Carlo Models of Impact Alteration of Planetary Atmospheres

MIkayla R. Huffman, David A. Brain, Kelsi N. Singer +2

One process that affects atmospheric surface pressure is impact bombardment. The evolution of a planet's atmosphere under impact bombardment is an open question. We use a Monte Car…

astro-ph.EP2026

Constraints on the Atmospheric Composition of 2002 XV from JWST Spectroscopy

Ian Wong, Silvia Protopapa, Emmanuel Lellouch

The recent detection of an atmosphere surrounding the trans-Neptunian object (TNO) 2002 XV from stellar occultation measurements has challenged the longstanding view that on…

astro-ph.EP2026

Detection of propadiene (CHCCH), propene (CH) and non-detection of propane (CH) in Jupiter's northern polar stratosphere

James A. Sinclair, Thomas K. Greathouse, Rohini S. Giles +8

We report the first detection of stratospheric propadiene (CHCCH) and propene (CH) at Jupiter's mid-to-high northern latitudes using IRTF-TEXES measurements recorde…

astro-ph.EP2026★ 4 cited

Europa's Lyman- emissions from HST/STIS observations

L. Roth, K. D. Retherford, J. Saur +13

An image of Lyman- (Ly) emission from Europa obtained with the Hubble Space Telescope Space Telescope Imaging Spectrograph (HST/STIS) has previously provided the first eviden…

astro-ph.EP2026

Feeling the Pressure: Effects of Formation Pressure on the Physical Properties of Titan Haze Analogs

Adis Husić, Xinting Yu, Ryan C. Blase +3

The Cassini-Huygens mission detected large negative ions in Titan's ionosphere at pressures as low as torr. These ions ultimately polymerize to form Titan's complex organ…

astro-ph.EP2026★ 1 cited

Physical Analysis of Bennu Samples Reveals Regolith Production by Collisional Disruption on Near-Earth Asteroids

R. -L. Ballouz, A. J. Ryan, R. J. Macke +25

Owing to the extremely low gravity of small near-Earth asteroids (NEAs), it has been assumed that impact-generated rock fragments escape into space and thus do not contribute to th…

astro-ph.EP2026

Constraining Electron-Impact Ionization of O Through UV Aurora Observations at Ganymede

Stefan Duling, Joachim Saur, Darrell Strobel +3

While photoionization rates of Ganymede's O dominated atmosphere are well constrained, the contribution of electron-impact ionization is rather uncertain. Previous quantitative…

astro-ph.EP2026

Lava Lakes on Io: crust age and implications for thermal output

Alessandro Mura, Rosaly M. C. Lopes, Federico Tosi +12

Recent observations by the JIRAM instrument onboard NASA's Juno mission have confirmed that many of Io's volcanic hot spots are active lava lakes, characterized by a colder central…

astro-ph.EP2026

Delivery of complex organic molecules to the system of Jupiter

T. Benest Couzinou, A. Amsler Moulanier, O. Mousis

Complex organic molecules are key markers of molecular diversity, and their formation conditions in protoplanetary disks remain an active area of research. These molecules have bee…

astro-ph.EP2026★ 12 cited

A young progenitor for the most common planetary systems in the Galaxy

John H. Livingston, Erik A. Petigura, Trevor J. David +39

The Galaxy's most common known planetary systems have several Earth-to-Neptune-size planets in compact orbits. At small orbital separations, larger planets are less common than the…

astro-ph.EP2026★ 2 cited

Structure of Jupiter's High-Latitude Storms: Folded Filamentary Regions Revealed by Juno

L. N. Fletcher, Z. Zhang, S. Brown +17

Sprawling, turbulent cloud formations dominate the meteorology of Jupiter's mid-to-high latitudes, known as Folded Filamentary Regions (FFRs). A multi-wavelength characterisation b…

astro-ph.EP2025

Characterising injection signatures in Jupiter's ultraviolet aurora using Juno observations

Linus Head, Denis Grodent, Bertrand Bonfond +12

Discrete features in Jupiter's ultraviolet aurora have been interpreted as signatures of plasma injections in the middle magnetosphere. There exists some ambiguity whether magnetod…

astro-ph.EP2025

Rotational Light-curve Recovery and Predictions of the LSST Yield of Hildas

Alexander J. Fleming, Jacob A. Kurlander, Dmitrii E. Vavilov +4

The Hilda population occupies the stable 3:2 mean-motion resonance of Jupiter and provides a window into solar system evolution, including collisional processes. The National Scien…

astro-ph.EP2025

The formation and structure of iron-dominated planetesimals

Terry-Ann Suer, Edgar S. Steenstra, Simone Marchi +2

Metal-rich asteroids and iron meteorites are considered core remnants of differentiated planetesimals and or products of oxygen-depleted accretion. Investigating the origins of iro…

astro-ph.EP2025★ 8 cited

Rings around irregular bodies I. Structure of the resonance mesh, applications to Chariklo, Haumea and Quaoar

Bruno Sicardy, Heikki Salo, Maryame El Moutamid +2

Three ring systems have been discovered to date around small irregular objects of the solar system (Chariklo, Haumea and Quaoar). For the three bodies, material is observed near th…

astro-ph.EP2025

Modeling the formation of N2 and CH4 frost on Pluto's slopes

L. Lange, T. Bertrand, V. Belissa +3

Context. The equatorial region of Cthulhu as revealed by New Horizons appears to be generally dark and largely devoid of volatiles because its surface albedo is low. Localized brig…

astro-ph.EP2025

Spatial variability of CH4 and C2H2 absorptions in Jupiter's auroral regions from Juno-UVS observations

J. Vinesse, B. Bonfond, B. Benmahi +8

Color ratios derived from molecular hydrogen emissions provide valuable diagnostics for the energy of precipitating electrons and the structure of the auroral atmosphere. We aim to…

astro-ph.EP2025

Thermospheric Density, Composition, and Temperature from GOES-R/SUVI Solar Occultations

Robert H. A. Sewell, Edward M. B. Thiemann, Jocelyn Lafyatis +6

A new dataset of atomic oxygen and molecular nitrogen number density profiles, along with thermospheric temperature profiles between 180 and 500 km, has been developed. These profi…

astro-ph.EP2025★ 3 cited

A dynamical dichotomy in large binary asteroids

K. Minker, B. Carry, F. Vachier +20

No less than 15% of large (diameter greater than 140 km) asteroids have satellites. The commonly accepted mechanism for their formation is post-impact reaccumulation. However, the…