1.3k citations · 1.4k across the 10 of their papers we have counts for
11 papers
Dust-driven vertical shear instability in an isothermal shearing box: I. Turbulence and gas dynamics without dust feedback
Jip Matthijsse, Hossam Aly, Sijme-Jan Paardekooper +1
The classical vertical shear instability (VSI) is a baroclinic instability that arises from height-dependent azimuthal velocities and is a leading candidate for driving anisotropic…
How two-dimensional are planet-disc interactions? II. Radiation hydrodynamics and suitable cooling prescriptions
Alexandros Ziampras, Amelia J. Cordwell, Roman R. Rafikov +1
The ring and gap structures found in observed protoplanetary disks are often attributed to embedded gap-opening planets and typically modeled with simplified thermodynamics in the…
A Particle-based Approach to Dust Dynamics in External Photoevaporative Winds
S. Paine, T. J. Haworth, R. P. Nelson
Planet-forming discs in sufficiently strong UV environments lose gas in external photoevaporative winds. Dust can also be entrained within these winds, which has consequences for t…
Halting the migration of super-Earths by efficient gap opening in radiative, low viscosity disks
Alexandros Ziampras, Richard P. Nelson, Sijme-Jan Paardekooper
While planet migration has been extensively studied for classical viscous disks, planet-disk interaction in nearly inviscid disks has mostly been explored with greatly simplified t…
Spirals, rings, and vortices shaped by shadows in protoplanetary disks: from radiative hydrodynamical simulations to observable signatures
Alexandros Ziampras, Cornelis P. Dullemond, Tilman Birnstiel +2
Numerous protoplanetary disks exhibit shadows in scattered light observations. These shadows are typically cast by misaligned inner disks and are associated with observable structu…
Dusty substructures induced by planets in ALMA disks: how dust growth and dynamics changes the picture
Alexandros Ziampras, Prakruti Sudarshan, Cornelis P. Dullemond +4
Protoplanetary disks exhibit a rich variety of substructure in millimeter continuum emission, often attributed to unseen planets. As these planets carve gaps in the gas, dust parti…
Buoyancy torques prevent low-mass planets from stalling in low-turbulence radiative disks
Alexandros Ziampras, Richard P. Nelson, Sijme-Jan Paardekooper
Low-mass planets migrating inwards in laminar protoplanetary disks (PPDs) experience a dynamical corotation torque, which is expected to slow down migration to a stall. However, ba…
Migration of low-mass planets in inviscid disks: the effect of radiation transport on the dynamical corotation torque
Alexandros Ziampras, Richard P. Nelson, Sijme-Jan Paardekooper
Low-mass planets migrate in the type-I regime. In the inviscid limit, the contrast between the vortensity trapped inside the planet's corotating region and the background disk vort…
Orbital evolution of close binary systems: comparing viscous and wind-driven circumbinary disc models
George Turpin, Richard Nelson
Previous work has shown that interactions between a central binary system and a circumbinary disc (CBD) can lead to the binary orbit either shrinking or expanding, depending on the…
A giant exoplanet orbiting a very low-mass star challenges planet formation models
J. C. Morales, A. J. Mustill, I. Ribas +179
Statistical analyses from exoplanet surveys around low-mass stars indicate that super-Earth and Neptune-mass planets are more frequent than gas giants around such stars, in agreeme…
A terrestrial planet candidate in a temperate orbit around Proxima Centauri
Guillem Anglada-Escudé, Pedro J. Amado, John Barnes +28
At a distance of 1.295 parsecs, the red-dwarf Proxima Centauri ( Centauri C, GL 551, HIP 70890, or simply Proxima) is the Sun's closest stellar neighbor and one of the best stud…