Spiral Arms in Gravitationally Unstable Protoplanetary Disks as Imaged in Scattered Light

Abstract

Combining 3D smoothed-particle hydrodynamics and Monte Carlo radiative transfer calculations, we examine the morphology of spiral density waves induced by gravitational instability (GI) in protoplanetary disks, as they would appear in direct images at near-infrared (NIR) wavelengths. We find that systems with disk-to-star-mass ratios q=M_disk/M_star that are ~0.25 or more may produce prominent spiral arms in NIR imaging, remarkably resembling features observed in the MWC 758 and SAO 206462 systems. The contrast of GI-induced arms at NIR wavelengths can reach a factor of ~3, and their pitch angles are about 10-15 degree. The dominant azimuthal wavenumber of GI-induced spiral arms roughly obeys m~1/q in the range 2<~1/q<~8. In particular, a massive disk with q~0.5 can exhibit grand-design m=2 spirals. GI-induced arms are in approximate corotation with the local disk, and may therefore trap dust particles by pressure drag. Although GI can produce NIR spiral arms with morphologies, contrasts, and pitch angles similar to those reported in recent observations, it also makes other demands that may or may not be satisfied in any given system. A GI origin requires that the spirals be relatively compact, on scales <~100 AU; that the disk be massive, q>~0.25; and that the accretion rate Mdot be high, on the order of 1e-6 solar mass per year.

18 pages, 4 figures, 1 table, ApJ Letter accepted

References in corpus (62)

• Validation of the new Hipparcos reduction
• First Results from High Angular Resolution ALMA Observations Toward the HL Tau Region
• Modelling Accretion in Protobinary Systems
• Using FU Orionis Outbursts to Constrain Self-Regulated Protostellar Disk Models
• Resolved Images of Large Cavities in Protoplanetary Transition Disks
• A Major Asymmetric Dust Trap in a Transition Disk
• Ring shaped dust accumulation in transition disks
• Can giant planets form by direct gravitational instability?
• Dust Filtration by Planet-Induced Gap Edges: Implications for Transitional Disks
• Discovery of Small-Scale Spiral Structures in the Disk of SAO 206462 (HD 135344B): Implications for the Physical State of the Disk from Spiral Density Wave Theory
• Observations of gas flows inside a protoplanetary gap
• The locality of transport in self-gravitating accretion discs
• Dust filtration at gap edges: Implications for the spectral energy distributions of discs with embedded planets
• Asymmetric features in the protoplanetary disk MWC758
• The Runts of the Litter: Why planets formed through gravitational instability can only be failed binary stars
• Observational Signatures of Planets in Protoplanetary Disks I: Gaps Opened by Single and Multiple Young Planets in Disks
• The effect of cooling on the global stability of self-gravitating protoplanetary discs
• On planet formation in HL Tau
• Spiral Arms in the Asymmetrically Illuminated Disk of MWC 758 and Constraints on Giant Planets
• Direct Imaging of Fine Structures in Giant Planet Forming Regions of the Protoplanetary Disk around AB Aurigae
• Large-Scale Asymmetries in the Transitional Disks of SAO 206462 and SR 21
• Structures in the protoplanetary disk of HD142527 seen in polarized scattered light
• Observational Signatures of Planets in Protoplanetary Disks II: Spiral Arms Observed in Scattered Light Imaging Can be Induced by Planets
• Testing the locality of transport in self-gravitating accretion discs - II. The massive disc case
• Pseudo-viscous modeling of self-gravitating discs and the formation of low mass ratio binaries
• Accelerated planetesimal growth in self-gravitating protoplanetary discs
• Characterising the Gravitational Instability in Cooling Accretion Discs
• Dust flow in gas disks in the presence of embedded planets
• Variable protostellar accretion with episodic bursts
• Brown dwarf formation by gravitational fragmentation of massive, extended protostellar discs
• Small vs large dust grains in transitional disks: do different cavity sizes indicate a planet?
• Gas density drops inside dust cavities of transitional disks around young stars observed with ALMA
• Particle Concentration At Planet Induced Gap Edges and Vortices: I. Inviscid 3-D Hydro Disks
• Steady state of dust distributions in disk vortices: Observational predictions and applications to transitional disks
• Local Enhancement of Surface Density in the Protoplanetary Ring Surrounding HD 142527
• Properties of gravitoturbulent accretion disks
• Formation of giant planets and brown dwarfs on wide orbits
• Three-Dimensional Radiation Transfer in Young Stellar Objects
• The missing cavities in the SEEDS polarized scattered light images of transitional protoplanetary disks: a generic disk model
• The Internal Energy for Molecular Hydrogen in Gravitationally Unstable Protoplanetary Disks
• Time-dependent models of the structure and evolution of self-gravitating protoplanetary discs
• Imaging diagnostics for transitional discs
• Recovery of the Candidate Protoplanet HD 100546 b with Gemini/NICI and Detection of Additional (Planet-Induced?) Disk Structure at Small Separations
• Disks around CQ Tau and MWC 758: dense PDR or gas dispersal?
• Scattered light images of spiral arms in marginally gravitationally unstable discs with an embedded planet
• Speckle Suppression Through Dual Imaging Polarimetry, and a Ground-Based Image of the HR 4796A Circumstellar Disk
• Introducing a Hybrid Method of Radiative Transfer for Smoothed Particle Hydrodynamics
• Near-Infrared Imaging Polarimetry of HD142527
• The role of thermodynamics in disc fragmentation
• Dust trapping by spiral arms in gravitationally unstable protostellar discs
• Fast Radial Flows in Transition Disk Holes
• Stability of self-gravitating discs under irradiation
• The Jeans Mass as a Fundamental Measure of Self-Gravitating Disc Fragmentation and Initial Fragment Mass
• Spatially Resolved Spectroscopy of Sub-AU-Sized Regions of T Tauri and Herbig Ae/Be Disks
• Resolving the Circumstellar Disk of HL Tauri at Millimeter Wavelengths
• Planetesimal Formation In Self-Gravitating Discs
• HD 135344B: a young star has reached its rotational limit
• Laser Guide Star Adaptive Optics Imaging Polarimetry of Herbig Ae/Be Stars
• How to Detect the Signatures of Self-Gravitating Circumstellar Discs with the Atacama Large Millimetre/sub-millimetre Array
• Viscosity prescription for gravitationally unstable accretion disks
• Fast Modes and Dusty Horseshoes in Transitional Disks
• The Effect of Irradiation on the Jeans Mass in Fragmenting Self-Gravitating Protostellar Discs

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• Dust dynamics in planet-driven spirals
• Searching for wide-orbit gravitational instability protoplanets with ALMA in the dust continuum
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• Kinematic Evidence of an Embedded Protoplanet in HD 142666 Identified by Machine Learning
• Observable scattered light features from inclined and non-inclined planets embedded in protoplanetary discs
• A SPHERE survey of self-shadowed planet-forming disks
• Constraining protoplanetary disc mass using the GI wiggle
• Disentangling Planets from Photoelectric Instability in Gas-Rich Optically Thin Dusty Disks
• Linear Analysis of the Nonaxisymmetric Secular Gravitational Instability
• Observational Signatures of Planets in Protoplanetary Disks: Temperature structures in spiral arms