Trapping of giant-planet cores - I. Vortex aided trapping at the outer dead zone edge
arXiv:1305.5676 · doi:10.1093/mnras/stt936
Abstract
In this paper the migration of a 10 Earth-mass planetary core is investigated at the outer boundary of the dead zone of a protoplanetary disc by means of 2D hydrodynamic simulations done with the graphics processor unit version of the FARGO code. In the dead zone, the effective viscosity is greatly reduced due to the disc self-shielding against stellar UV radiation, X-rays from the stellar magnetosphere and interstellar cosmic rays. As a consequence, mass accumulation occurs near the outer dead zone edge, which is assumed to trap planetary cores enhancing the efficiency of the core-accretion scenario to form giant planets. Contrary to the perfect trapping of planetary cores in 1D models, our 2D numerical simulations show that the trapping effect is greatly dependent on the width of the region where viscosity reduction is taking place. Planet trapping happens exclusively if the viscosity reduction is sharp enough to allow the development of large-scale vortices due to the Rossby wave instability. The trapping is only temporarily, and its duration is inversely proportional to the width of the viscosity transition. However, if the Rossby wave instability is not excited, a ring-like axisymmetric density jump forms, which cannot trap the 10 Earth-mass planetary cores. We revealed that the stellar torque exerted on the planet plays an important role in the migration history as the barycentre of the system significantly shifts away from the star due to highly non-axisymmetric density distribution of the disc. Our results still support the idea of planet formation at density/pressure maximum, since the migration of cores is considerably slowed down enabling them further growth and runaway gas accretion in the vicinity of an overdense region.
23 pages, 31 figures, accepted for publication in MNRAS
References in corpus (50)
- Disk Frequencies and Lifetimes in Young Clusters
- Planet-disk interaction and orbital evolution
- Coagulation, fragmentation and radial motion of solid particles in protoplanetary disks
- Models of Giant Planet formation with migration and disc evolution
- Rossby Wave Instability of Keplerian Accretion Disks
- The outcome of protoplanetary dust growth: pebbles, boulders, or planetesimals? II. Introducing the bouncing barrier
- FARGO: a fast eulerian transport algorithm for differentially rotating disks
- The outcome of protoplanetary dust growth: pebbles, boulders, or planetesimals? I. Mapping the zoo of laboratory collision experiments
- Extrasolar planet population synthesis I: Method, formation tracks and mass-distance distribution
- A torque formula for non-isothermal Type I planetary migration - I. Unsaturated horseshoe drag
- A comparative study of disc-planet interaction
- Runaway migration and the formation of hot Jupiters
- Rossby Wave Instability of Thin Accretion Disks -- II. Detailed Linear Theory
- Local Magnetohydrodynamical Models of Layered Accretion Disks
- Halting Type I planet migration in non-isothermal disks
- Time-Evolution of Viscous Circumstellar Disks due to Photoevaporation by FUV, EUV and X-ray Radiation from the Central Star
- Heat and Dust in Active Layers of Protostellar Disks
- Possible planet-forming regions on submillimetre images
- On the migration of protogiant solid cores
- Planet migration in three-dimensional radiative discs
- Planet formation bursts at the borders of the dead zone in 2D numerical simulations of circumstellar disks
- Migration of Protoplanets in Radiative Disks
- Reviving Dead Zones in Accretion Disks by Rossby Vortices at their Boundaries
- Orbital migration of low-mass planets in evolutionary radiative models: Avoiding catastrophic infall
- Particle Aggregation in a turbulent Keplerian flow
- Dead Zone Accretion Flows in Protostellar Disks
- On corotation torques, horseshoe drag and the possibility of sustained stalled or outward protoplanetary migration
- Type I planetary migration in a self-gravitating disk
- High-Resolution Spectroscopy in Tr37: Gas Accretion Evolution in Evolved Dusty Disks
- The co-orbital corotation torque in a viscous disk: numerical simulations
- Breaking through: The effects of a velocity distribution on barriers to dust growth
- Dust-trapping Rossby vortices in protoplanetary disks
- Three-dimensional Disk-Planet Torques in a Locally Isothermal Disk
- Formation and long-term evolution of 3D vortices in protoplanetary discs
- New composite models of partially ionized protoplanetary disks
- Saving Planetary Systems: Dead Zones & Planetary Migration
- Rossby wave instability at dead zone boundaries in 3D resistive magnetohydrodynamical global models of protoplanetary disks
- Energetic Protons, Radionuclides and Magnetic Activity in Protostellar Disks
- On the horseshoe drag of a low-mass planet. II Migration in adiabatic disks
- Formation of planetary cores at Type I migration traps
- Orbital migration of interacting low-mass planets in evolutionary radiative turbulent models
- Turbulent transport and its effect on the dead zone in protoplanetary discs
- The dynamical role of the circumplanetary disc in planetary migration
- Building Giant-Planet Cores at a Planet Trap
- Dead Zones and the Origin of Planetary Masses
- On Hydrodynamic Motions in Dead Zones
- On the horseshoe drag of a low-mass planet. I - Migration in isothermal disks
- Low-mass planets in nearly inviscid disks: Numerical treatment
- Resistive double-diffusive instability in the dead-zones of protostellar disks
- Protoplanets with core masses below the critical mass fill in their Roche lobe
Cited by in corpus (28)
- Parametric Study of the Rossby Wave Instability in a Two-Dimensional Barotropic Disk
- Long Term Evolution of Planet-Induced Vortices in Protoplanetary Disks
- Do Giant Planets Survive Type II Migration?
- ALMA reveals the anatomy of the mm-sized dust and molecular gas in the HD 97048 disk
- Giant planet formation at the pressure maxima of protoplanetary disks II. A hybrid accretion scenario
- Disk Dispersal: Theoretical Understanding and Observational Constraints
- Identifying Anticyclonic Vortex Features Produced by the Rossby Wave Instability in Protoplanetary Disks
- Giant planet formation at the pressure maxima of protoplanetary disks
- The circumstellar disk response to the motion of the host star
- A gas density drop in the inner 6 AU of the transition disk around the Herbig Ae star HD 139614: Further evidence for a giant planet inside the disk?
- Parametric Study of the Rossby Wave Instability in a Two-dimensional Barotropic Disk II: Non-Linear Calculations
- Survival of planet-induced vortices in 2D disks
- Meso-scale Instability Triggered by Dust Feedback in Dusty Rings: Origin and Observational Implications
- Vortex Formation and Evolution in Planet Harboring Disks under Thermal Relaxation
- Torques felt by solid accreting planets
- Physics of Planet Trapping with Applications to HL Tau
- Interpreting Brightness Asymmetries in Transition Disks: Vortex at Dead Zone or Planet Carved Gap Edges?
- Planet-vortex interaction:How a vortex can shepherd a planetary embryo
- Improving the thin-disk models of circumstellar disk evolution. The 2+1-dimensional model
- Dynamical signatures of Rossby vortices in cavity-hosting disks
- Trapping (sub-)Neptunes similar to TOI-216b at the inner disk rim: Implications for the disk viscosity and the Neptunian desert
- Super-Earths as Failed Cores in Orbital Migration Traps
- Asymmetric fundamental band CO lines as a sign of an embedded giant planet
- Planetesimal and planet formation in transient dust traps
- Photoevaporation Does Not Create a Pileup of Giant Planets at 1 AU
- Increased isolation mass for pebble accreting planetary cores in pressure maxima of protoplanetary discs
- Morphology and dynamical stability of self-gravitating vortices: Numerical simulations
- On wave interference in planet migration: dead zone torques modified by active zone forcing