A Major Asymmetric Dust Trap in a Transition Disk

Abstract

The statistics of discovered exoplanets suggest that planets form efficiently. However, there are fundamental unsolved problems, such as excessive inward drift of particles in protoplanetary disks during planet formation. Recent theories invoke dust traps to overcome this problem. We report the detection of a dust trap in the disk around the star Oph IRS 48 using observations from the Atacama Large Millimeter/submillimeter Array (ALMA). The 0.44-millimeter-wavelength continuum map shows high-contrast crescent-shaped emission on one side of the star originating from millimeter-sized grains, whereas both the mid-infrared image (micrometer-sized dust) and the gas traced by the carbon monoxide 6-5 rotational line suggest rings centered on the star. The difference in distribution of big grains versus small grains/gas can be modeled with a vortex-shaped dust trap triggered by a companion.

25 pages, 7 figures (accepted version prior to language editing)

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• Planet-induced disk structures: A comparison between (sub)mm and infrared radiation
• A brief overview of planet formation
• New Spatially Resolved Imaging of the SR 21 Transition Disk and Constraints on the Small-Grain Disk Geometry
• Distinguishing Magnetized Disc Winds from Turbulent Viscosity through Substructure Morphology in Planet-forming Discs
• A study of dust properties in the inner sub-au region of the Herbig Ae star HD 169142 with VLTI/PIONIER
• A resolved and asymmetric ring of PAHs within the young circumstellar disk of IRS 48
• Extreme Pebble Accretion in Ringed Protoplanetary Discs
• Ring Formation in Protoplanetary Disks Driven by an Eccentric Instability
• Insights into planet formation from debris disks: I. The solar system as an archetype for planetesimal evolution
• On the settling of small grains in dusty discs: analysis and formulas
• The protoplanetary disc around HD 169142: circumstellar or circumbinary?
• Effects of disc asymmetries on astrometric measurements - Can they mimic planets?
• Turbulent Disk Viscosity and the Bifurcation of Planet Formation Histories
• On the vortex evolution in non-isothermal protoplanetary discs
• Circumstellar discs: What will be next?
• UV Fluorescence Traces Gas and LyA Evolution in Protoplanetary Disks
• The Science Case for the Planet Formation Imager (PFI)
• Observational Signatures of Circumbinary Discs I: Kinematics
• How to form compact & other longer-lived planet-induced vortices: VSI, planet migration, or re-triggers, but not feedback
• The gas disk: Evolution and chemistry
• On the mechanism of self gravitating Rossby interfacial waves in proto-stellar accretion discs
• Distributions of gas and small and large grains in the LkH$\alpha 330$ disk trace a young planetary system
• Near-IR Polarized Scattered Light Imagery of the DoAr 28 Transitional Disk
• A Dust Trap in the Young Multiple System HD 34700
• Observing Circumplanetary Disks with METIS
• Spreading pressure bumps in gas-dust discs can stall planet migration via planet-vortex interactions
• Very Large Telescope observations of Gomez's Hamburger: Insights into a young protoplanet candidate
• Science Case and Requirements for the MOSAIC Concept for a Multi-Object Spectrograph for the European Extremely Large Telescope
• The Ophiuchus DIsk Survey Employing ALMA (ODISEA): A Unified Evolutionary Sequence of Planet-Driven Substructures Explaining the Diversity of Disk Morphologies
• Multi-frequency analysis of the ALMA and VLA high resolution continuum observations of the substructured disc around CI Tau. Preference for sub-mm-sized low-porosity amorphous carbon grains
• A Large Double-ring Disk around the Taurus M Dwarf J04124068+2438157
• Kinematical signatures: Distinguishing between warps and radial flows
• ALMA Observations of Asymmetric Molecular Gas Emission from a Protoplanetary Disk in the Orion Nebula
• Water transport throughout the TRAPPIST-1 system: the role of planetesimals
• ALMA Observations of the Inner Cavity in the Protoplanetary Disk around Sz 84
• Discovery of two infrared objects with strong ice absorption in the AKARI slit-less spectroscopic survey of the Galactic Plane
• Particle clustering in turbulence: Prediction of spatial and statistical properties with deep learning
• Planetary Accretion Shocks with a Realistic Equation of State
• UV Spectropolarimetry with Polstar: Protoplanetary Disks
• A question of personalities: evolution of viscous and wind-driven protoplanetary discs in the presence of dead zones
• Modeling the arc and ring structures in the HD 143006 disk
• Investigating the nature of the extended structure around the Herbig star RCrA using integral field and high-resolution spectroscopy
• Tiny Grains Shining Bright in the Gaps of Herbig Ae Transitional Discs
• Stability of Dusty Rings in Protoplanetary Discs
• Multiple Rings and Asymmetric Structures in the Disk of SR 21
• On the evolution of vortex in locally isothermal self-gravitating discs: a parameter study
• Mid-infrared Multi-wavelength Imaging of Ophiuchus\,IRS\,48\,Transitional Disk
• Morphology and dynamical stability of self-gravitating vortices: Numerical simulations
• The Circumbinary Disk of HD 34700A: I. CO gas kinematics indicate spirals, infall, and vortex motions
• A major asymmetric ice trap in a planet-forming disk: II. prominent SO and SO2 pointing to C/O < 1
• Directly Detecting the Envelopes of Low-mass Planets Embedded In Protoplanetary Discs and The Case For TW Hydrae
• The ALMA survey to Resolve exoKuiper belt Substructures (ARKS) VIII: A dust arc and non-Keplerian gas kinematics in HD 121617
• Planetary nurseries: vortices formed at smooth viscosity transition
• ALMA 873 $\mu$m Polarization Observations of the PDS~70 Disk
• The potential of combining MATISSE and ALMA observations: Constraining the structure of the innermost region in protoplanetary discs
• Investigation of a Vorticity-preserving Scheme for the Euler Equations
• The Structure and Evolution of Protoplanetary Disks: an infrared and submillimeter view
• Applying a Particle-only Model to the HL Tau Disk
• Large Dust Grains and a Possible Dust Trap in the Polar Circumbinary Disc of HD 98800B
• Dust Growth in ALMA Rings: II. Dusty Rossby Wave Instability
• On the cavity size in circumbinary discs
• Probing inner and outer disk misalignments in transition disks
• Gas vs dust radial extent in disks: the importance of their thermal interplay
• Hunting for methanol in the water rich, planet forming disk around HL Tau
• What is the amount of baryonic dark matter in galaxies?
• Witnessing Planetary Systems in the Making with the Next Generation Very Large Array
• The Substructures in Disks undergoing Vertical Shear Instability: II. Observational Predictions for the Dust Continuum
• OSSOS finds an Exponential Cutoff in the Size Distribution of the Cold Classical Kuiper belt
• CosmoAmautas: Astrophysics in the high school classroom (2nd edition)
• Gas dynamics around dust asymmetries in turbulent disks
• The Circumbinary Disc of HD 34700A II. Analysis of a strong dust asymmetry
• The formation of planetary systems with SPICA