3 papers
astro-ph.EP2025
Turbulence and dust fragility in protoplanetary discs
Simin Tong, Richard Alexander, Giovanni Rosotti
Dust growth from micron- to planet-size in protoplanetary discs involves multiple physical processes, including dust collisions, the streaming instability, and pebble accretion. Di…
astro-ph.EP2025
Compact protoplanetary discs can be produced by dead zones
Simin Tong, Richard Alexander
Radially compact protoplanetary discs (<=50 au) are ubiquitous in nearby star-forming regions. Multiple mechanisms have been invoked to interpret various compact discs. In this pap…
astro-ph.EP2024
A question of personalities: evolution of viscous and wind-driven protoplanetary discs in the presence of dead zones
Simin Tong, Richard Alexander, Giovanni Rosotti
Whether the angular momentum of protoplanetary discs is redistributed by viscosity or extracted by magnetised winds is a long-standing question. Demographic indicators, such as gas…