9.1k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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177 papers · 1 filter
Exploration of the inner region of the system HD 142527
T. M. H. Tran, M. Langlois, O. Flasseur +6
HD 142527 is a well-studied intermediate-mass T Tauri star surrounded by a transitional disk with a large dust cavity, spiral structures, and an accreting low-mass companion. Despi…
Radial modes of pressure bumps and dips in astrophysical discs
Armand Leclerc, Guillaume Laibe, Elliot Lynch +1
This study investigates the signatures of pressure extrema on global oscillations in discs. To this end, we use the framework of wave topology to establish a generalised local disp…
Exomoon search with VLTI/GRAVITY around the substellar companion HD 206893 B
Q. Kral, J. Wang, J. Kammerer +130
Direct astrometric detection of exomoons remains unexplored. This study presents the first application of high-precision astrometry to search for exomoons around substellar compani…
Search for exocomets transits in Kepler light curves: Ten new transits identified
Pierre Dumond, Alain Lecavelier des Etangs, Flavien Kiefer +2
The Kepler mission, despite its conclusion over a decade ago, continues to offer a rich dataset for uncovering new astrophysical objects and phenomena. In this study, we conducted…
On inertial forces (indirect terms) in problems with a central body
Aurélien Crida, Clément Baruteau, Philippine Griveaud +14
Gravitational systems in astrophysics often comprise a body -- the primary -- that far outweights the others, and which is taken as the centre of the reference frame. A fictitious…
The COBREX archival survey: improved constraints on the occurrence rate of wide-orbit substellar companions. I. A uniform re-analysis of 400 stars from the GPIES survey
V. Squicciarini, J. Mazoyer, A. -M. Lagrange +4
Direct imaging (DI) campaigns are uniquely suited to probing the outer regions around young stars and looking for giant exoplanet and brown dwarf companions, hence providing key co…
On the early thermal processing of planetesimals during and after the giant planet instability
A. Gkotsinas, D. Nesvorny, A. Guilbert-Lepoutre +2
Born as ice-rich planetesimals, cometary nuclei were gravitationally scattered onto their current orbits in the Kuiper Belt and the Oort Cloud during the giant planets' dynamical i…
Giant planets population around B stars from the first part of the BEAST survey
P. Delorme, A. Chomez, V. Squicciarini +23
Exoplanets form from circumstellar protoplanetary discs whose fundamental properties (notably their extent, composition, mass, temperature and lifetime) depend on the host star pro…
Formation and evolution of a protoplanetary disk: combining observations, simulations and cosmochemical constraints
Alessandro Morbidelli, Yves Marrocchi, Adnan Ali Ahmad +12
We present a plausible and coherent view of the evolution of the protosolar disk that is consistent with the cosmochemical constraints and compatible with observations of other pro…
Compaction during fragmentation and bouncing produces realistic dust grain porosities in protoplanetary discs
Stéphane Michoulier, Jean-François Gonzalez, Daniel J. Price
Context: In protoplanetary discs, micron-sized dust grows to form millimetre- to centimetre-sized pebbles but encounters several barriers during its evolution. Collisional fragment…
Geomagnetic dipole stability and zonal flows controlled by mantle heat flux heterogeneities
Thomas Frasson, Natanaël Schaeffer, Henri-Claude Nataf +1
This work aims at acquiring a more complete understanding of how lateral heterogeneities of the CMB heat flux affect the geodynamo while other relevant parameters are pushed toward…
SPHERE RefPlanets: Search for epsilon Eridani b and warm dust
C. Tschudi, H. M. Schmid, M. Nowak +35
We carried out very deep VLT/SPHERE imaging polarimetry of the nearby system Eps Eri based on 38.5 hours of integration time with a 600 - 900 nm broadband filter to search for pola…
Probing the eccentricity in protostellar discs -- Modeling kinematics and morphologies
Enrico Ragusa, Elliot Lynch, Guillaume Laibe +2
Protostellar discs are mostly modelled as circular structures of gas and dust orbiting a protostar. However, a number of physical mechanisms, e.g. the presence of a (sub)stellar co…
Aeolian erosion in protoplanetary discs: How impactful it is on dust evolution?
Stéphane Michoulier, Jean-François Gonzalez, Evgeni Grishin +1
Context: Many barriers prevent dust to form planetesimals via coagulation in protoplanetary discs, such as bouncing, collisional fragmentation or aeolian erosion. Modelling dust an…
The impact of lake shape and size on lake breezes and air-lake exchanges on Titan
Audrey Chatain, Scot C. R. Rafkin, Alejandro Soto +5
Titan, the largest moon of Saturn, has many lakes on its surface, formed mainly of liquid methane. Like water lakes on Earth, these methane lakes on Titan likely profoundly affect…
The GAPS program at TNG XLVII: The unusual formation history of V1298 Tau
D. Turrini, F. Marzari, D. Polychroni +33
Observational data from space and ground-based campaigns reveal that the 10-30 Ma old V1298 Tau star hosts a compact and massive system of four planets. Mass estimates for the two…
Eccentric debris disc morphologies II: Surface brightness variations from overlapping orbits in narrow eccentric discs
Joshua B. Lovell, Elliot M. Lynch
We present Paper II of the Eccentric Debris Disc Morphologies series to explore the effects that significant free and forced eccentricities have on high-resolution millimetre-wavel…
An imaged 15Mjup companion within a hierarchical quadruple system
A. Chomez, V. Squicciarini, A. -M. Lagrange +20
Since 2019, the direct imaging B-star Exoplanet Abundance Study (BEAST) at SPHERE@VLT has been scanning the surroundings of young B-type stars in order to ascertain the ultimate fr…
Evidence of Radius Inflation in Radiative GCM Models of WASP-76b due to the Advection of Potential Temperature
Felix Sainsbury-Martinez, Pascal Tremblin, Aaron David Schneider +6
Understanding the discrepancy between the radii of observed hot Jupiters and standard 'radiative-convective' models remains a hotly debated topic in the exoplanet community. One me…
Dust dynamics in current sheets within protoplanetary disks. I. Isothermal models including ambipolar diffusion and Ohmic resistivity
U. Lebreuilly, M. -M. Mac Low, B. Commerçon +1
Context: Chondrules originate from the reprocessing of dust grains. They are key building blocks of telluric planets, yet their formation, which must happen in strongly localized r…
Remarks on compressible convection in Super-Earths
Yanick Ricard, Thierry Alboussière
The radial density of planets increases with depth due to compressibility, leading to impacts on their convective dynamics. To account for these effects, including the presence of…
A Large Double-ring Disk around the Taurus M Dwarf J04124068+2438157
Feng Long, Bin B. Ren, Nicole L. Wallack +23
Planet formation imprints signatures on the physical structures of disks. In this paper, we present high-resolution (50 mas, 8 au) Atacama Large Millimeter/submillimeter Arra…
How the origin of stars in the Galaxy impacts the composition of planetary building blocks
N. Cabral, A. Guilbert-Lepoutre, B. Bitsch +2
Context. Our Galaxy is composed of different stellar populations with varying chemical abundances, which are thought to imprint the composition of planet building blocks (PBBs). As…
On averaging eccentric orbits: Implications for the long-term thermal evolution of comets
Anastasios Gkotsinas, Aurélie Guilbert-Lepoutre, Sean N. Raymond
One of the common approximations in long-term evolution studies of small bodies is the use of circular orbits averaging the actual eccentric ones, facilitating the coupling of proc…