Stability of Dusty Rings in Protoplanetary Discs
arXiv:2401.04517 · doi:10.1093/mnras/stae089
Abstract
Dust rings in protoplanetary discs are often observed in thermal dust emission and could be favourable environments for planet formation. While dust rings readily form in gas pressure maxima, their long-term stability is key to both their observability and potential to assist in planet formation. We investigate the stability of the dust ring generated by interactions of a protoplanetary disc with a Neptune sized planet and consider its possible long term evolution using the FARGO3D Multifluid code. We look at the onset of the Rossby Wave Instability (RWI) and compare how the addition of dust in a disc can alter the stability of the gas phase. We find that with the addition of dust, the rings generated by planet disc interactions are more prone to RWI and can cause the gas phase to become unstable. The instability is shown to occur more easily for higher Stokes number dust, as it accumulates into a more narrow ring which triggers the RWI, while the initial dust fraction plays a more minor role in the stability properties. We show that the dusty RWI generates vortices that collect dust in their cores, which could be sites for further planetesimal formation. We conclude that the addition of dust can cause a ring in a protoplanetary disc to become more prone to instability leading to a different long term evolution compared to gas only simulations of the RWI.
20 pages, 28 figures
References in corpus (24)
- A comparative study of disc-planet interaction
- Gaps, Rings, and Non-Axisymmetric Structures in Protoplanetary Disks - From Simulations to ALMA Observations
- Evidence of fast pebble growth near condensation fronts in the HL Tau protoplanetary disk
- Multiple Disk Gaps and Rings Generated by a Single Super-Earth
- Standing on the shoulders of giants: Trojan Earths and vortex trapping in low mass self-gravitating protoplanetary disks of gas and solids
- On the Stability of Elliptical Vortices in Accretion Discs
- Effects of dust feedback on vortices in protoplanetary disks
- Empirical constraints on turbulence in proto-planetary discs
- A thermodynamic view of dusty protoplanetary disks
- Dust and gas mixtures with multiple grain species - a one-fluid approach
- Long Term Evolution of Planet-Induced Vortices in Protoplanetary Disks
- Polydisperse Streaming Instability III. Dust evolution encourages fast instability
- Formation, Survival, and Destruction of Vortices in Accretion Disks
- On the Origin of Dust Structures in Protoplanetary Disks: Constraints from the Rossby Wave Instability
- Vortex instabilities triggered by low-mass planets in pebble-rich, inviscid protoplanetary discs
- On the non-axisymmetric fragmentation of rings generated by the Secular Gravitational Instability
- Rossby Wave Instabilities of Protoplanetary Discs with Cooling
- On the local stability of vortices in differentially rotating discs
- Migrating Low-Mass Planets in Inviscid Dusty Protoplanetary Discs
- Emergence of vortices at the edges of planet-driven gaps in protoplanetary discs
- The Appearance of Vortices in Protoplanetary Disks in Near-Infrared Scattered Light
- On the vortex evolution in non-isothermal protoplanetary discs
- Dynamics of Dusty Vortices II: Stability of 2D dust laden vortices
- Single Fluid vs. Multifluid: Comparison between single fluid and multifluid dust models for disc planet interactions