The role of detailed gas and dust opacities in shaping the evolution of the inner disc edge subject to episodic accretion

Abstract

We investigate the effects of different dust and gas opacity descriptions on the structure and evolution of the inner regions of protoplanetary discs. The influence on the episodic instability of the inner rim is hereby of central interest. 2D axisymmetric radiation hydrodynamic models are employed to simulate the evolution of the inner disc over several thousand years. Our simulations greatly expand on previous models by implementing detailed opacity descriptions in terms of their mean and frequency-dependent values, allowing us to also consider binned frequency-dependent irradiation. The adaptive opacity description significantly affects the structure of the inner disc rim, with gas opacities exerting the greatest influence. The resulting effects include shifts in the position of both the dust sublimation front and the dead zone inner edge, a significantly altered temperature in the dust-free region and the manifestation of an equilibrium temperature degeneracy as a sharp temperature transition. The episodic instability due to MRI activation in the dead zone still occurs, but at lower inner disc densities. While the gas opacities set the initial conditions for the instability, the evolution of the outburst itself is mainly governed by the dust opacities. The analysis of criteria for non-axisymmetric instabilities reveals possible breaking of the density peaks produced by the burst. However, due to the periodicity of the instability, the inner edge itself may remain stable throughout quiescent phases according to linear criteria. Although the thermal structure of the inner disc is crucially affected by different opacity descriptions, the mechanism of the periodic instability of the DZIE remains active and is only marginally influenced by gas opacities. The observational consequences of the severely altered temperatures may be significant and require further investigation.

arXiv comment22 pages, 15 figures, accepted for publication in A&A

References in corpus (82)

• Spectral Energy Distributions of T Tauri Stars With Passive Circumstellar Disks
• PLUTO: a Numerical Code for Computational Astrophysics
• Low Temperature Opacities
• The disc instability model of dwarf-novae and low-mass X-ray binary transients
• Using FU Orionis Outbursts to Constrain Self-Regulated Protostellar Disk Models
• Rossby Wave Instability of Keplerian Accretion Disks
• Line and Mean Opacities for Ultracool Dwarfs and Extrasolar Planets
• Radiation thermo-chemical models of protoplanetary disks I. Hydrostatic disk structure and inner rim
• The Disk Substructures at High Angular Resolution Project (DSHARP) VI: Dust trapping in thin-ringed protoplanetary disks
• The Burst Mode of Protostellar Accretion
• Consistent dust and gas models for protoplanetary disks. I. Disk shape, dust settling, opacities, and PAHs
• Gaps, Rings, and Non-Axisymmetric Structures in Protoplanetary Disks - From Simulations to ALMA Observations
• Equilibrium chemistry down to 100 K - Impact of silicates and phyllosilicates on carbon/oxygen ratio
• Non-steady Accretion in Protostars
• The Shape of the Inner Rim in Proto-Planetary Disks
• Magnetospheres and Disk Accretion in Herbig Ae/Be Stars
• Radiation-Dominated Disks Are Thermally Stable
• Trapping Solids at the Inner Edge of the Dead Zone: 3-D Global MHD Simulations
• 2-D simulations of FU Orionis disk outbursts
• Radiation hydrodynamics with Adaptive Mesh Refinement and application to prestellar core collapse. I Methods
• Long-term Evolution of Protostellar and Protoplanetary Disks. I. Outbursts
• Massive planets in FU Orionis discs: implications for thermal instability models
• Potential Vorticity Evolution of a Protoplanetary Disk with An Embedded Protoplanet
• High-Temperature Ionization in Protoplanetary Disks
• Fast and accurate frequency-dependent radiation transport for hydrodynamics simulations in massive star formation
• 3D Radiation Non-ideal Magnetohydrodynamical Simulations Of The Inner Rim In Protoplanetary Disks
• The Disk Substructures at High Angular Resolution Project (DSHARP): X. Multiple rings, a misaligned inner disk, and a bright arc in the disk around the T Tauri star HD 143006
• Three-Dimensional Radiation-Hydrodynamics Calculations of the Envelopes of Young Planets Embedded in Protoplanetary Disks
• The Gravo-Magneto Limit Cycle in Accretion Disks
• Radiation hydrodynamical models of the inner rim in protoplanetary disks
• Radiation Magnetohydrodynamics In Global Simulations Of Protoplanetary Disks
• Rossby wave instability at dead zone boundaries in 3D resistive magnetohydrodynamical global models of protoplanetary disks
• The unusual protoplanetary disk around the T Tauri star ET Cha
• Planet formation and migration near the silicate sublimation front in protoplanetary disks
• Hydrodynamic Photoevaporation of Protoplanetary Disks with Consistent Thermochemistry
• Large dust grains in the inner region of circumstellar disks
• Parametric Study of the Rossby Wave Instability in a Two-Dimensional Barotropic Disk
• Are protoplanetary disks born with vortices? -- Rossby wave instability driven by protostellar infall
• Dust and gas density evolution at a radial pressure bump in protoplanetary disks
• Mean gas opacity for circumstellar environments and equilibrium temperature degeneracy
• Radiation Transfer of Models of Massive Star Formation. I. Dependence on Basic Core Properties
• The chemistry of episodic accretion in embedded objects. 2D radiation thermo-chemical models of the post-burst phase
• Variable Accretion Outbursts in Protostellar Evolution
• Outbursts in Global Protoplanetary Disk Simulations
• Towards a comprehensive view of accretion, inner disks, and extinction in classical T Tauri stars: an ODYSSEUS study of the Orion OB1b association
• Vortex cycles at the inner edges of dead zones in protoplanetary disks
• On the effects of optically thick gas (disks) around massive stars
• The reliability of approximate radiation transport methods for irradiated disk studies
• Formation of the terrestrial planets in the solar system around 1 au via radial concentration of planetesimals
• Terrestrial planet formation by torque-driven convergent migration of planetary embryos
• Testing large-scale vortex formation against viscous layers in three-dimensional discs
• Distinguishing between different mechanisms of FU-Orionis-type luminosity outbursts
• Dynamical Gaseous Rings in Global Simulations of Protoplanetary Disk Formation
• Observational diagnostics of elongated planet-induced vortices with realistic planet formation timescales
• Thermodynamics of the dead-zone inner edge in protoplanetary disks
• Photoevaporation of protoplanetary discs with PLUTO+PRIZMO I. Lower X-ray-driven mass-loss rates due to enhanced cooling
• Rayleigh Adjustment of Narrow Barriers in Protoplanetary Discs
• The dynamics of inner dead-zone boundaries in protoplanetary disks
• Forbidden emission lines in protostellar outflows and jets with MUSE
• Three-temperature radiation hydrodynamics with PLUTO: Tests and applications to protoplanetary disks
• Magnetically-activated accretion outbursts of pre-main sequence discs
• A Search for Spatially Resolved Infrared Ro-Vibrational Molecular Hydrogen Emission from the Disks of Young Stars
• Establishing Dust Rings and Forming Planets Within Them
• Interpreting Brightness Asymmetries in Transition Disks: Vortex at Dead Zone or Planet Carved Gap Edges?
• Dynamics Near the Inner Dead-Zone Edges in a Proprotoplanetary Disk
• The effect of luminosity outbursts on the protoplanetary disk dynamics
• Two-dimensional models of layered protoplanetary discs - II. The effect of a residual viscosity in the dead zone
• Time-dependent, long-term hydrodynamic simulations of the inner protoplanetary disk I: The importance of stellar magnetic torques
• Variability of the inner dead zone edge in 2D radiation hydrodynamic simulations
• Trapping (sub-)Neptunes similar to TOI-216b at the inner disk rim: Implications for the disk viscosity and the Neptunian desert
• CAI formation in the early Solar System
• IGRINS spectroscopy of Class I sources: IRAS 03445+3242 and IRAS 04239+2436
• Two-dimensional simulations of disks in close binaries: Simulating outburst cycles in cataclysmic variables
• Modelling thermochemical processes in protoplanetary disks I: numerical methods
• The Role of Thermal Instability in Accretion Outbursts in High-Mass Stars
• Accretion bursts in young intermediate-mass stars make planet formation challenging
• Global magnetohydrodynamic simulations of the inner regions of protoplanetary discs. I. Zero-net flux regime
• Ionization chemistry in the inner disc: a combined treatment of ionic and thermionic emission and arbitrary grain size distributions
• Time-dependent response of protoplanetary disk temperature to an FU Ori-type luminosity outburst
• Protoplanetary disks around magnetized young stars with large-scale magnetic fields I: Steady-state solutions
• Starlight-driven flared-staircase geometry in radiation hydrodynamic models of protoplanetary disks
• Episodic accretion in high-mass star formation: An analysis of thermal instability for axially symmetric disks

Cited by in corpus (1)

• Gas chemistry in the dust depleted inner regions of protoplanetary disks. I. Near-IR spectra and overtones