A ring-like concentration of mm-sized particles in Sz 91

Abstract

Models of planet formation and disc evolution predict a variety of observables in the dust structure of protoplanetary discs. Here we present Atacama Large Millimeter/submillimeter Array (ALMA) Band-6 and Band-7 observations of the transition disc Sz\,91 showing that the continuum emission at 870$\mu$m, which is dominated by emission from large dust grains, is localized in an optically thin narrow ring. We find that most of the emission ($\sim 95\%$) is concentrated in a ring located at 110 au from the central star that is only about 44 au wide. In contrast, the ${}^{12}\mathrm{CO}$ (2-1) emission peaks closer to the star and is detected up to $\sim 488$ au from the star. The concentration of large grains in a ring-like structure while the gas disc extends much further in and further out is in qualitative agreement with predictions of hydrodynamical models of planet-disc interactions including radial drift and gas drag.

MNRAS, in press. Proof corrected version

References in corpus (12)

• Ring shaped dust accumulation in transition disks
• A Submillimeter View of Circumstellar Dust Disks in $\rho$ Ophiuchus
• Dust filtration at gap edges: Implications for the spectral energy distributions of discs with embedded planets
• Dust flow in gas disks in the presence of embedded planets
• The Spitzer c2d Survey of Large, Nearby, Interstellar Clouds. XI. Lupus Observed With IRAC and MIPS
• ALMA hints at the presence of two companions in the disk around HD 100546
• Gas and dust structures in protoplanetary disks hosting multiple planets
• The Nature of Transition Circumstellar Disks II. Southern Molecular Clouds
• The effect of a planet on the dust distribution in a 3D protoplanetary disk
• The Masses of Transition Circumstellar Disks: Observational Support for Photoevaporation Models
• Planet gaps in the dust layer of 3D protoplanetary disks. II. Observability with ALMA
• Gas inside the 97 au cavity around the transition disk Sz\,91

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