{ "id": "1603.09357", "version": "v1", "published": "2016-03-30T20:03:15.000Z", "updated": "2016-03-30T20:03:15.000Z", "title": "Constraining turbulence mixing strength in transitional discs with planets using SPHERE and ALMA", "authors": [ "M. de Juan Ovelar", "P. Pinilla", "M. Min", "C. Dominik", "T. Birnstiel" ], "comment": "Accepted 2016 March 21, MNRAS Letters. Monthly Notices of the Royal Astronomical Society: Letters 2016", "doi": "10.1093/mnrasl/slw051", "categories": [ "astro-ph.SR", "astro-ph.EP" ], "abstract": "We investigate the effect that the turbulent mixing strength parameter $\\alpha_{\\rm{turb}}$ plays on near-infrared polarimetric and sub-millimetre interferometric imaging observations of transitional discs (TDs) with a gap carved by a planet. We generate synthetic observations of these objects with ALMA and VLT/SPHERE-ZIMPOL by combining hydrodynamical, dust evolution, radiative transfer and instrument models for values of $\\alpha_{\\rm{turb}}=[10^{-4}, 10^{-3}, 10^{-2}]$. We find that, through a combination of effects on the viscosity of the gas, the turbulent mixing and dust evolution processes, $\\alpha_{\\rm{turb}}$ strongly affects the morphology of the dust distribution that can be traced with these observations. We constrain the value of $\\alpha_{\\rm{turb}}$ to be within an order of magnitude of $10^{-3}$ in TD sources that show cavities in sub-mm continuum images while featuring continuous distribution of dust or smaller cavities in NIR-polarimetric images.", "revisions": [ { "version": "v1", "updated": "2016-03-30T20:03:15.000Z" } ], "analyses": { "keywords": [ "constraining turbulence mixing strength", "transitional discs", "sub-mm continuum images", "generate synthetic observations", "sub-millimetre interferometric imaging observations" ], "tags": [ "journal article" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }