111 citations · 713 across the 20 of their papers we have counts for
10 papers · 1 filter
A unique solution to overcome the barriers to planetesimal formation at low dust-to-gas ratio
H. Meheut, F. A. Gerosa, J. Bec
In the incremental growth model, planetesimal formation constitutes the least understood step in the process of planetary formation. The two main difficulties in this regard are th…
Clusters of heavy particles in two-dimensional Keplerian turbulence
Fabiola Antonietta Gerosa, Héloïse Meheut, Jérémie Bec
Protoplanetary disks are gaseous systems in Keplerian rotation around young stars, known to be turbulent. They include a small fraction of dust from which planets form. In the incr…
Vortex-like kinematic signal, spirals, and beam smearing effect in the HD 142527 disk
Y. Boehler, F. Ménard, C. M. T. Robert +8
Vortices are one of the most promising mechanisms to locally concentrate millimeter dust grains and allow the formation of planetesimals through gravitational collapse. The outer d…
SPHERE+: Imaging young Jupiters down to the snowline
A. Boccaletti, G. Chauvin, D. Mouillet +130
SPHERE (Beuzit et al,. 2019) has now been in operation at the VLT for more than 5 years, demonstrating a high level of performance. SPHERE has produced outstanding results using a…
Gaps, rings, and non-axisymmetric structures in protoplanetary disks - Emission from large grains
J. P. Ruge, M. Flock, S. Wolf +5
Dust grains with sizes around (sub)mm are expected to couple only weakly to the gas motion in regions beyond 10 au of circumstellar disks. In this work, we investigate the influenc…
Rossby Wave Instability and Long-Term Evolution of Dead Zones in Protoplanetary Discs
Ryan Miranda, Dong Lai, Heloise Meheut
The physical mechanism of angular momentum transport in poorly ionized regions of protoplanetary discs, the dead zones (DZs), is not understood. The presence of a DZ naturally lead…
Vortex cycles at the inner edges of dead zones in protoplanetary disks
Julien Faure, Sébatien Fromang, Henrik latter +1
In protoplanetary disks, the inner boundary between the turbulent and laminar regions is a promising site for planet formation because solids may become trapped at the interface it…
Multiple spiral patterns in the transitional disk of HD 100546
A. Boccaletti, E. Pantin, A. -M. Lagrange +3
Protoplanetary disks around young stars harbor many structures related to planetary formation. Of particular interest, spiral patterns were discovered among several of these disks…
Dust-trapping Rossby vortices in protoplanetary disks
H. Meheut, Z. Meliani, P. Varniere +1
One of the most challenging steps in planet formation theory is the one leading to the formation of planetesimals of kilometre size. A promising scenario involves the existence of…
Formation and long-term evolution of 3D vortices in protoplanetary discs
H. Meheut, R. Keppens, F. Casse +1
In the context of planet formation, anticyclonic vortices have recently received lots of attention for the role they can play in planetesimals formation. Radial migration of interm…