collaborators

5 papers

astro-ph.EP2025

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…

astro-ph.EP2025

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…

astro-ph.EP2025

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…

astro-ph.EP2025

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…

astro-ph.EP2024

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…