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218 papers · 1 filter
PLATOSpec's first results: Three new transiting warm Jupiters from the WINE survey TIC 147027702, TIC 245076932 and TIC 87422071
Pavol Gajdoš, Rafael Brahm, Lorena Acuña-Aguirre +33
We report the discovery and characterisation of three transiting warm Jupiters: TIC 147027702b, TIC 245076932b and TIC 87422071b. These systems were initially identified as transit…
Unraveling the Brown Dwarf Desert: Four New Discoveries and a Unifying, Period-Coded Picture
Ján Šubjak, Rafael Brahm, Jozef Lipták +30
We present four newly validated transiting brown dwarfs identified through TESS photometry and confirmed with high-precision radial velocity measurements obtained from the FEROS an…
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…
Synchronisation of a tidal binary by inward orbital migration. The case of Pluto and Charon
Michael Efroimsky, Michaela Walterova, Yeva Gevorgyan +3
It is usually taken for granted that mutual synchronisation of a tidal two-body system is attained through tidal recession, assuming the reduced Hill sphere is not reached. However…
Catastrophic disruption of asteroid 2023 CX1 and implications for planetary defense
Auriane Egal, Denis Vida, François Colas +94
Mitigation of the threat from airbursting asteroids requires an understanding of the potential risk they pose for the ground. How asteroids release their kinetic energy in the atmo…
Different arrival times of CM and CI-like bodies from the outer Solar System to the asteroid belt
Sarah E. Anderson, Pierre Vernazza, Miroslav Brož
Understanding the provenance of CI and CM chondrites, the most primitive materials in our meteorite collections, is critical for shedding light on the Solar System's early evolutio…
Multi-scale radiative-transfer model of the protoplanetary disc DoAr 44
Marco Souza de Joode, Miroslav Brož
We aim to construct a comprehensive global multi-scale kinematic equilibrium radiative-transfer model for the pre-transitional disc of DoAr 44 (Haro 1-16, V2062 Oph) in the Ophiuch…
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…
Resurgence of CO in a warm bubble around accreting protoplanets and its observability
O. Chrenko, S. Casassus, R. O. Chametla
The cold outer regions of protoplanetary disks are expected to contain a midplane-centered layer where gas-phase CO molecules freeze out and their overall abundance is low. The lay…
Confined tumbling state as the origin of the excess of slowly rotating asteroids
Wen-Han Zhou, Patrick Michel, Marco Delbo +4
The rotational distribution of asteroids as a function of their size is used {as a diagnostic of} their physical properties and evolution. Recent photometric surveys from the Gaia…
JWST sighting of decameter main-belt asteroids and view on meteorite sources
Artem Y. Burdanov, Julien de Wit, Miroslav Brož +19
Asteroid discoveries are essential for planetary-defense efforts aiming to prevent impacts with Earth, including the more frequent megaton explosions from decameter impactors. Whil…
Insights on the Rotational State and Shape of Asteroid (203) Pompeja from TESS Photometry
Oriel A. Humes, Josef Hanuš
The Main Belt asteroid (203) Pompeja shows evidence of extreme variability in visible and near-infrared spectral slope with time. The observed spectral variability has been hypothe…
Impact sculpting of the early martian atmosphere
Oliver Shorttle, Homa Saeidfirozeh, Paul Rimmer +4
Intense bombardment of solar system planets in the immediate aftermath of protoplanetary disk dissipation has played a key role in their atmospheric evolution. During this epoch, e…
Spin states of X-complex asteroids in the inner main belt -- I. Investigating the Athor and Zita collisional families
D. Athanasopoulos, J. Hanuš, C. Avdellidou +14
The aim of our study is to characterise the spin states of the members of the Athor and Zita collisional families and test whether these members have a spin distribution consistent…
Pebble-driven migration of low-mass planets in the 2D regime of pebble accretion
O. Chrenko, R. O. Chametla, F. S. Masset +2
<Context> Pebbles drifting past a disk-embedded low-mass planet develop asymmetries in their distribution and exert a substantial gravitational torque on the planet, thus modifying…
The Yarkovsky effect on the long-term evolution of binary asteroids
Wen-Han Zhou, David Vokrouhlicky, Masanori Kanamaru +4
We explore the Yarkovsky effect on small binary asteroids. While significant attention has been given to the binary YORP effect, the Yarkovsky effect is often overlooked. We develo…
Origin and Evolution of Jupiter's Trojan Asteroids
William F. Bottke, Raphael Marschall, David Nesvorný +1
The origin of the Jupiter Trojan asteroids has long been a mystery. Dynamically, the population, which is considerably smaller than the main asteroid belt, librates around Jupiter'…
A Crater Chronology for the Jupiter's Asteroids
S. Marchi, D. Nesvorný, D. Vokrouhlický +2
We present a new crater chronology for Jupiter's Trojan asteroids. This tool can be used to interpret the collisional history of the bodies observed by NASA's Lucy mission. The Luc…
Seasonally Varying Outgassing as an Explanation for Dark Comet Accelerations
Aster G. Taylor, Davide Farnocchia, David Vokrouhlicky +3
Significant nonradial, nongravitational accelerations with magnitudes incompatible with radiation-driven effects have been reported in seven small, photometrically inactive near-Ea…
Shape models and spin states of Jupiter Trojans: Testing the streaming instability formation scenario
Josef Hanuš, David Vokrouhlický, David Nesvorný +5
The leading theory for the origin of Jupiter Trojans (JTs) assumes that JTs were captured to their orbits near the Lagrangian points of Jupiter during the early reconfiguration of…
Accreting luminous low-mass planets escape from migration traps at pressure bumps
O. Chrenko, R. O. Chametla
We investigate the migration of Mars- to super-Earth-sized planets in the vicinity of a pressure bump in a 3D radiative protoplanetary disc while accounting for the effect of accre…
On wave interference in planet migration: dead zone torques modified by active zone forcing
R. O. Chametla, O. Chrenko, W. Lyra +1
We investigate planetary migration in the dead zone of a protoplanetary disk where there are a set of spiral waves propagating inward due to the turbulence in the active zone and t…
NEOMOD: A New Orbital Distribution Model for Near Earth Objects
David Nesvorny, Rogerio Deienno, William F. Bottke +10
Near Earth Objects (NEOs) are a transient population of small bodies with orbits near or in the terrestrial planet region. They represent a mid-stage in the dynamical cycle of aste…
2021 occultations and transits of Linus orbiting (22) Kalliope: I. Polygonal and `cliptracing' algorithm
M. Brož, J. Ďurech, M. Ferrais +10
The satellite Linus orbiting the main-belt asteroid (22) Kalliope exhibited occultation and transit events in late 2021. A photometric campaign was organized and observations were…