A highly settled disk around Oph 163131

Abstract

High dust density in the midplane of protoplanetary disks is favorable for efficient grain growth and can allow fast formation of planetesimals and planets, before disks dissipate. Vertical settling and dust trapping in pressure maxima are two mechanisms allowing dust to concentrate in geometrically thin and high density regions. In this work, we aim to study these mechanisms in the highly inclined protoplanetary disk SSTC2D J163131.2-242627 (Oph163131, i~84deg). We present new high angular resolution continuum and 12CO ALMA observations of Oph163131. The gas emission appears significantly more extended in the vertical and radial direction compared to the dust emission, consistent with vertical settling and possibly radial drift. In addition, the new continuum observations reveal two clear rings. The outer ring, located at ~100 au, is well resolved in the observations, which allows us to put stringent constraints on the vertical extent of millimeter dust particles. We model the disk using radiative transfer and find that the scale height of millimeter sized grains is 0.5au or less at 100au from the central star. This value is about one order of magnitude smaller than the scale height of smaller micron-sized dust grains constrained by previous modeling, which implies that efficient settling of the large grains is occurring in the disk. When adopting a parametric dust settling prescription, we find that the observations are consistent with a turbulent viscosity coefficient of about alpha<=10^-5 at 100au. Finally, we find that the thin dust scale height measured in Oph163131 is favorable for planetary growth by pebble accretion: a 10 M_Earth planet may grow within less than 10 Myr, even in orbits exceeding 50au.

arXiv commentAccepted for publication in ApJ

References in corpus (61)

• Array Programming with NumPy
• Streaming Instabilities in Protoplanetary Disks
• First Results from High Angular Resolution ALMA Observations Toward the HL Tau Region
• Rapid growth of gas-giant cores by pebble accretion
• Discovery of a planetary-mass companion within the gap of the transition disk around PDS 70
• Particle Stirring in Turbulent Gas Disks: Including Orbital Oscillations
• Gaps and Rings in an ALMA Survey of Disks in the Taurus Star-forming Region
• Wind-driven Accretion in Protoplanetary Disks. I: Suppression of the Magnetorotational Instability and Launching of the Magnetocentrifugal Wind
• The Disk Substructures at High Angular Resolution Project (DSHARP): II. Characteristics of Annular Substructures
• Protoplanetary Disk Turbulence Driven by the Streaming Instability: Non-Linear Saturation and Particle Concentration
• Separating gas-giant and ice-giant planets by halting pebble accretion
• Dust and Gas in the disc of HL Tauri: Surface density, dust settling, and dust-to-gas ratio
• Particle Clumping and Planetesimal Formation Depend Strongly on Metallicity
• Monte Carlo radiative transfer in protoplanetary disks
• The Disk Substructures at High Angular Resolution Project (DSHARP) VI: Dust trapping in thin-ringed protoplanetary disks
• Dynamics of Solids in the Midplane of Protoplanetary Disks: Implications for Planetesimal Formation
• Disks ARound TTauri Stars with Sphere (DARTTS-S) I: Sphere / IRDIS Polarimetric Imaging of 8 prominent TTauri Disks
• A Kinematical Detection of Two Embedded Jupiter Mass Planets in HD 163296
• Benchmark problems for continuum radiative transfer. High optical depths, anisotropic scattering, and polarisation
• Pebble isolation mass --- scaling law and implications for the formation of super-Earths and gas giants
• The Runts of the Litter: Why planets formed through gravitational instability can only be failed binary stars
• Kinematic evidence for an embedded protoplanet in a circumstellar disc
• A Three-Dimensional View of Turbulence: Constraints on Turbulent Motions in the HD 163296 Protoplanetary Disk using DCO${}^{+}$
• Formation of planetary systems by pebble accretion and migration: How the radial pebble flux determines a terrestrial-planet or super-Earth growth mode
• Turbulence in the TW Hya Disk
• Fast accretion of small planetesimals by protoplanetary cores
• Initial mass function of planetesimals formed by the streaming instability
• Four annular structures in a protostellar disk less than 500,000 years old
• Observations of edge-on protoplanetary disks with ALMA I. Results from continuum data
• Disk evolution in the solar neighborhood. I Disk frequencies from 1 to 100 Myr
• Measuring turbulent motion in planet-forming disks with ALMA: A detection around DM Tau and non-detections around MWC 480 and V4046 Sgr
• The Gould's Belt Distances Survey (GOBELINS) I. Trigonometric parallax distances and depth of the Ophiuchus complex
• The Radial Distribution of Dust Particles in the HL Tau Disk from ALMA and VLA Observations
• Direct detection of scattered light gaps in the transitional disk around HD 97048 with VLT/SPHERE
• Molecules with ALMA at Planet-forming Scales (MAPS) IV: Emission Surfaces and Vertical Distribution of Molecules
• Gaia-DR2 confirms VLBA parallaxes in Ophiuchus, Serpens and Aquila
• Global MHD simulations of stratified and turbulent protoplanetary discs. II. Dust settling
• Self-induced dust traps: overcoming planet formation barriers
• Characterizing the dust content of disk substructures in TW Hya
• Planetary Growth with Collisional Fragmentation and Gas Drag
• The efficiency of dust trapping in ringed proto-planetary discs
• Gas and dust dynamics in starlight-heated protoplanetary disks
• Frankenstein: Protoplanetary disc brightness profile reconstruction at sub-beam resolution with a rapid Gaussian process
• Protoplanetary Disk Rings as Sites for Planetesimal Formation
• Dust distribution in protoplanetary disks - Vertical settling and radial migration
• Dust settling and rings in the outer regions of protoplanetary discs subject to ambipolar diffusion
• Estimate on dust scale height from ALMA dust continuum image of the HD 163296 protoplanetary disk
• Pebble-driven Planet Formation around Very Low-mass Stars and Brown Dwarfs
• Multi-wavelength continuum sizes of protoplanetary discs: scaling relations and implications for grain growth and radial drift
• Dust modeling of the combined ALMA and SPHERE datasets of HD163296. Is HD163296 really a Meeus group II disk?
• The Flying Saucer: Tomography of the thermal and density gas structure of an edge-on protoplanetary disk
• Spatial segregation of dust grains in transition disks. SPHERE observations of 2MASS J16083070-3828268 and RXJ1852.3-3700
• Effects of scattering, temperature gradients, and settling on the derived dust properties of observed protoplanetary disks
• Predicting the kinematic evidence of gravitational instability
• The temporal requirements of directly observing self-gravitating spiral waves in protoplanetary discs with ALMA
• HST Scattered Light Imaging and Modeling of the Edge-on Protoplanetary Disk ESO-H$\alpha$ 569
• Investigating the Relative Gas and Small Dust Grain Surface Heights in Protoplanetary Disks
• The Anatomy of an Unusual Edge-on Protoplanetary Disk. II. Gas temperature and a warm outer region
• The Anatomy of an Unusual Edge-on Protoplanetary Disk I. Dust Settling in a Cold Disk
• Dust growth, fragmentation and self-induced dust traps in PHANTOM
• The steady-state hydrodynamics of a long-lived disc: planetary system architecture and prospects of observing a circumplanetary disc shadow in V4046Sgr

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