111 citations · 713 across the 20 of their papers we have counts for
20 papers
Unlocking the dynamics of Young Stellar Objects: Time-Domain Interferometry with six 4-m class telescopes
A. Soulain, B. Lopez, A. Matter +32
The dynamics of the inner regions of young stellar objects (YSOs) is driven by a variety of physical phenomena, from magnetospheres and accretion to the dust sublimation rim and in…
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…
Gender and Precarity in Astronomy
N. A. Webb, C. Bot, S. Charpinet +6
Following the survey Well-being in astrophysics that was sent out in March 2021, to establish how astrophysics researchers, primarily in France, experience their career, some of 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…
Well-being in French Astrophysics
N. A. Webb, C. Bot, S. Charpinet +8
It has become clear that early career astrophysics researchers (doctoral researchers, post-docs, etc) have a very diverse appreciation of their career, with some declaring it the b…
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…
The asymmetric inner disk of the Herbig Ae star HD 163296 in the eyes of VLTI/MATISSE: evidence for a vortex?
J. Varga, M. Hogerheijde, R. van Boekel +133
Context. The inner few au region of planet-forming disks is a complex environment. High angular resolution observations have a key role in understanding the disk structure and the…
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…
Angular momentum transport and large eddy simulations in magnetorotational turbulence: the small Pm limit
H. Meheut, S. Fromang, G. Lesur +2
Angular momentum transport in accretion discs is often believed to be due to magnetohydrodynamic turbulence mediated by the magnetorotational instability. Despite an abundant liter…
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…
Quasi-periodic oscillations from Rossby Wave Instability
F. H. Vincent, P. Varniere, H. Meheut +3
We study the Rossby wave instability model of high-frequency quasi-periodic oscillations (QPO) of microquasars. We show ray-traced light curves of QPO within this model and discuss…
Flux Modulation from the Rossby Wave Instability in microquasars accretion disks: toward a HFQPO model
F. H. Vincent, H. Meheut, P. Varniere +1
Context. There have been a long string of efforts to understand the source of the variability observed in microquasars, especially concerning the elusive High-Frequency Quasi-Perio…
Toward a model for HFQPOs in Microquasars
P. Varniere, M. Tagger, F. Vincent +1
There have been a long string of efforts to understand the source of the variability observed in microquasars but no model has yet gained wide acceptance, especially concerning the…
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…
Rossby Wave Instability and three-dimensional vortices in accretion disks
H. Meheut, F. Casse, P. Varniere +1
Context. The formation of vortices in accretion disks is of high interest in various astrophysical contexts, in particular for planet formation or in the disks of compact objects.…
Warping modes in discs around accreting neutron stars
H. Meheut, M. Tagger
The origin and stability of a thin sheet of plasma in the magnetosphere of an accreting neutron star is investigated. First the radial extension of such a magnetospheric disc is ex…