Measuring turbulent motion in planet-forming disks with ALMA: A detection around DM Tau and non-detections around MWC 480 and V4046 Sgr

Abstract

Turbulence is a crucial factor in many models of planet formation, but it has only been directly constrained among a small number of planet forming disks. Building on the upper limits on turbulence placed in disks around HD 163296 and TW Hya, we present ALMA CO J=2-1 line observations at $\sim 0.3"$ (20-50 au) resolution and 80 ms${}^{-1}$ channel spacing of the disks around DM Tau, MWC 480, and V4046 Sgr. Using parametric models of disk structure, we robustly detect non-thermal gas motions around DM Tau of between 0.25 c${}_s$ and 0.33 c${}_s$, with the range dominated by systematic effects, making this one of the only systems with directly measured non-zero turbulence. Using the same methodology, we place stringent upper limits on the non-thermal gas motion around MWC 480 ($<$0.08c${}_s$) and V4046 Sgr ($<$0.12 c${}_s$). The preponderance of upper limits in this small sample, and the modest turbulence levels consistent with dust studies, suggest that weak turbulence ($\alpha \lesssim 10^{-3}$) may be a common, albeit not universal, feature of planet-forming disks. We explore the particular physical conditions around DM Tau that could lead this system to be more turbulent than the others.

arXiv comment21 pages, 10 figures, accepted to ApJ

References in corpus (132)

• Astropy: A Community Python Package for Astronomy
• emcee: The MCMC Hammer
• Gaia Data Release 2. Summary of the contents and survey properties
• Gaia Data Release 2: The astrometric solution
• Estimating distances from parallaxes IV: Distances to 1.33 billion stars in Gaia Data Release 2
• The Mass Dependence Between Protoplanetary Disks and their Stellar Hosts
• Gas- and dust evolution in protoplanetary disks
• Resolved Images of Large Cavities in Protoplanetary Transition Disks
• Particle Stirring in Turbulent Gas Disks: Including Orbital Oscillations
• The photodissociation and chemistry of CO isotopologues: applications to interstellar clouds and circumstellar disks
• A torque formula for non-isothermal Type I planetary migration - II. Effects of diffusion
• The Disk Substructures at High Angular Resolution Project (DSHARP): II. Characteristics of Annular Substructures
• Closed-form expressions for particle relative velocities induced by turbulence
• Dust and Gas in the disc of HL Tauri: Surface density, dust settling, and dust-to-gas ratio
• Dynamical Masses of T Tauri Stars and Calibration of PMS Evolution
• The Disk Population of the Taurus Star-Forming Region
• Evidence for Accretion: High-Resolution X-ray Spectroscopy of the Classical T Tauri Star TW Hydrae
• The Disk Substructures at High Angular Resolution Project (DSHARP) VI: Dust trapping in thin-ringed protoplanetary disks
• An Old Disk That Can Still Form a Planetary System
• ALMA Survey of Lupus Protoplanetary Disks II: Gas Disk Radii
• On the age of the $\beta$ Pictoris moving group
• A Kinematical Detection of Two Embedded Jupiter Mass Planets in HD 163296
• Probing the structure of protoplanetary disks: a comparative study of DM Tau, LkCa 15 and MWC 480
• Kinematic evidence for an embedded protoplanet in a circumstellar disc
• Photodesorption of ices I: CO, N2 and CO2
• Weak Turbulence in the HD 163296 Protoplanetary Disk Revealed by ALMA CO Observations
• A Three-Dimensional View of Turbulence: Constraints on Turbulent Motions in the HD 163296 Protoplanetary Disk using DCO${}^{+}$
• The interaction of planets with a disc with MHD turbulence IV: Migration rates of embedded protoplanets
• Global simulations of protoplanetary disks with net magnetic flux: I. Non-ideal MHD case
• Accretion Rates for T Tauri Stars Using Nearly Simultaneous Ultraviolet and Optical Spectra
• A lithium depletion boundary age of 21 Myr for the Beta Pictoris moving group
• Towards a Global Evolutionary Model of Protoplanetary Disks
• Global X-ray properties of the Orion Nebula region
• How Empty are Disk Gaps Opened by Giant Planets?
• A Spatially Resolved Vertical Temperature Gradient in the HD 163296 Disk
• Turbulence in the TW Hya Disk
• The Radial Distribution of H2 and CO in TW Hya as Revealed by Resolved ALMA Observations of CO Isotopologues
• Three radial gaps in the disk of TW Hydrae imaged with SPHERE
• Effect of Ambipolar Diffusion on the Non-linear Evolution of Magnetorotational Instability in Weakly Ionized Disks
• Direct mapping of the temperature and velocity gradients in discs. Imaging the vertical CO snow line around IM Lupi
• Evidence for a correlation between mass accretion rates onto young stars and the mass of their protoplanetary disks
• Multiple Disk Gaps and Rings Generated by a Single Super-Earth
• The Far-Ultraviolet Spectra of TW Hya. II. Models of H2 Fluorescence in a Disk
• Chemical evolution of turbulent protoplanetary disks and the Solar nebula
• The Coupled Physical Structure of Gas and Dust in the IM Lup Protoplanetary Disk
• Kinematic detection of a planet carving a gap in a protoplanetary disc
• Mass measurements in protoplanetary disks from hydrogen deuteride
• Measuring Turbulence in TW Hya with ALMA: Methods and Limitations
• Cooling Requirements for the Vertical Shear Instability in Protoplanetary Disks
• CO ice photodesorption: A wavelength-dependent study
• Disk Imaging Survey of Chemistry with SMA: II. Southern Sky Protoplanetary Disk Data and Full Sample Statistics
• Disk Imaging Survey of Chemistry with SMA (DISCS): I. Taurus Protoplanetary Disk Data
• Empirical Constraints on Turbulence in Protoplanetary Accretion Disks
• Surface Layer Accretion in Conventional and Transitional Disks Driven by Far-Ultraviolet Ionization
• Hot H2O Emission and Evidence for Turbulence in the Disk of a Young Star
• Millimeter imaging of HD 163296: probing the disk structure and kinematics
• Magnetic Flux Concentration and Zonal Flows in Magnetorotational Instability Turbulence
• Tracing Slow Winds from T Tauri Stars via Low Velocity Forbidden Line Emission
• Reprocessing of Ices in Turbulent Protoplanetary Disks: Carbon and Nitrogen Chemistry
• The formation of rings and gaps in magnetically coupled disk-wind systems: ambipolar diffusion and reconnection
• A Deep Chandra X-ray Spectrum of the Accreting Young Star TW Hydrae
• Temperaments of young stars: Rapid mass-accretion rate changes in T Tauri and Herbig Ae stars
• Radiation Hydrodynamical Turbulence In Protoplanetary Disks: Numerical Models and Observational Constraints
• The Degree of Alignment Between Circumbinary Disks and Their Binary Hosts
• Unlocking CO Depletion in Protoplanetary Disks I. The Warm Molecular Layer
• A Far-ultraviolet Atlas of Low-resolution Hubble Space Telescope Spectra of T Tauri Stars
• Dust Transport in Protostellar Disks Through Turbulence and Settling
• Probing the turbulent mixing strength in protoplanetary disks across the stellar mass range: no significant variations
• Dust unveils the formation of a mini-Neptune planet in a protoplanetary ring
• The Photoevaporative Wind from the Disk of TW Hya
• Masses and Implications for Ages of Low-Mass Pre-Main Sequence Stars in Taurus and Ophiuchus
• The Structure of the Evolved Circumbinary Disk around V4046 Sgr
• Temperature, Mass and Turbulence: A Spatially Resolved Multi-Band Non-LTE Analysis of CS in TW~Hya
• H2CO and N2H+ in Protoplanetary Disks: Evidence for a CO-ice Regulated Chemistry
• An ALMA survey of DCN/H${}^{13}$CN and DCO${}^{+}$/H${}^{13}$CO${}^{+}$ in protoplanetary disks
• Protoplanetary disc `isochrones' and the evolution of discs in the $\dot{M}-M_{\mathrm{d}}$ plane
• The initial conditions for planet formation: Turbulence driven by hydrodynamical instabilities in disks around young stars
• Chemistry in Disks. III. -- Photochemistry and X-ray driven chemistry probed by the ethynyl radical (CCH) in DM Tau, LkCa 15, and MWC 480
• Double DCO+ rings reveal CO ice desorption in the outer disk around IM Lup
• Constraints from Dust Mass and Mass Accretion Rate Measurements on Angular Momentum Transport in Protoplanetary Disks
• Protoplanetary Disks as (Possibly) Viscous Disks
• Fast Radial Flows in Transition Disk Holes
• High-resolution Ultraviolet Radiation Fields of Classical T Tauri Stars
• The masses of young stars: CN as a probe of dynamical masses
• Chemistry in Disks VIII: the CS molecule as an analytic tracer of turbulence in disks
• Vortex formation in protoplanetary discs induced by the vertical shear instability
• Dust Coagulation and Settling in Layered Protoplanetary Disks
• Observability of planet-disc interactions in CO kinematics
• Evidence For A Vertical Dependence on the Pressure Structure in AS 209
• Chemistry in Disks. IX. Observations and modeling of HCO+ and DCO+ in DM Tau
• Freeze-out and coagulation in pre-protostellar collapse
• New constraints on turbulence and embedded planet mass in the HD 163296 disk from planet-disk hydrodynamic simulations
• Multi-wavelength diagnostics of accretion in an X-ray selected sample of CTTSs
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• Protoplanetary Disk Sizes and Angular Momentum Transport
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• Investigating the inner discs of Herbig Ae/Be stars with CO bandhead and Br Gamma emission
• Spontaneous ring formation in wind-emitting accretion discs
• Planet-driven spiral arms in protoplanetary disks: II. Implications
• Evidence for a CO desorption front in the outer AS 209 disk
• Stringent limits on the magnetic field strength in the disc of TW Hya: ALMA observations of CN polarisation
• The Herbig Ae star HD 163296 in X-rays
• Midplane temperature and outer edge of the protoplanetary disk around HD 163296
• Evolution of X-ray and FUV Disk-Dispersing Radiation Fields
• Signatures of MRI-Driven Turbulence in Protoplanetary Disks: Predictions for ALMA Observations
• Efficiency of Particle Trapping in the Outer Regions of Protoplanetary Disks
• The Distribution and Chemistry of H${}_2$CO in the DM Tau Protoplanetary Disk
• CO emission tracing a warp or radial flow within $\lesssim$ 100 au in the HD 100546 protoplanetary disk
• New Constraints From Dust Lines On The Surface Densities Of Protoplanetary Disks
• A Disk-based Dynamical Constraint on the Mass of the Young Binary DQ Tau
• TW Hya: Spectral Variability, X-Rays, and Accretion Diagnostics
• Variable H${}^{13}$CO${}^{+}$ Emission in the IM Lup Disk: X-ray Driven Time-Dependent Chemistry?
• Accretion variability of Herbig Ae/Be stars observed by X-Shooter. HD 31648 and HD 163296
• Jets, accretion, coronae and all that: The enigmatic X-rays from the Herbig star HD 163296
• A Surface Density Perturbation in the TW Hydrae Disk at 95 au Traced by Molecular Emission
• Origin of Weak Turbulence in the Outer Regions of Protoplanetary Disks
• Radial variations in grain sizes and dust scale heights in the protoplanetary disk around HD 163296 revealed by ALMA polarization observation
• Global Simulations of the Vertical Shear Instability with Non-ideal Magnetohydrodynamical Effects
• Gravito-Turbulent Disks in 3D: Turbulent Velocities vs. Depth
• A Subarcsecond ALMA Molecular Line Imaging Survey of the Circumbinary, Protoplanetary Disk Orbiting V4046 Sgr
• Turbulent-diffusion Mediated CO Depletion in Weakly Turbulent Protoplanetary disks
• High Resolution K-band Spectroscopy of MWC 480 and V1331 Cyg
• The Ionization Fraction in the DM Tau Protoplanetary Disk
• Determining the mid-plane conditions of circumstellar discs using gas and dust modelling: a study of HD 163296
• X-ray Spectroscopy of the Nearby, Classical T Tauri Star TW Hya
• Tracing High-Energy Radiation from T Tauri Stars Using Mid-Infrared Neon Emission from Disks
• Dust dynamics in 2D gravito-turbulent disks
• Warm H2O and OH disk emission in V1331 Cyg
• Turbulent Linewidths as a Diagnostic of Self-Gravity in Protostellar Discs
• Variability of Disk Emission in Pre-Main Sequence and Related Stars IV. Investigating the Structural Changes in the Inner Disk Region of MWC 480

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