Ongoing flyby in the young multiple system UX Tauri
Astronomy and Astrophysics, vol. 639, pp. L1
Abstract
We present observations of the young multiple system UX Tauri to look for circumstellar disks and for signs of dynamical interactions. We obtained SPHERE/IRDIS deep differential polarization images in the J and H bands. We also used ALMA archival CO data. Large extended spirals are well detected in scattered light coming out of the disk of UX Tau A. The southern spiral forms a bridge between UX Tau A and C. These spirals, including the bridge connecting the two stars, all have a CO (3–2) counterpart seen by ALMA. The disk of UX Tau C is detected in scattered light. It is much smaller than the disk of UX Tau A and has a major axis along a different position angle, suggesting a misalignment. We performed PHANTOM SPH hydrodynamical models to interpret the data. The scattered light spirals, CO emission spirals and velocity patterns of the rotating disks, and the compactness of the disk of UX Tau C all point to a scenario in which UX Tau A has been perturbed very recently (∼1000 years) by the close passage of UX Tau C.
Authors 30
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Centre National de la Recherche Scientifique · Institut de Planétologie et d'Astrophysique de Grenoble · Université Grenoble Alpes
Affiliation as printed
Univ. Grenoble Alpes, CNRS, IPAG, 38000 Grenoble, France
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Lyon 1 Université · Centre National de la Recherche Scientifique · Pontificia Universidad Católica de Chile · Centre de Recherche Astrophysique de Lyon · Institut de Planétologie et d'Astrophysique de Grenoble · Université Grenoble Alpes
Affiliation as printed
Instituto de Astrofísica, Pontificia Universidad Católica de Chile, Santiago, Chile
Univ Lyon, Univ Claude Bernard Lyon1, Ens de Lyon, CNRS, Centre de Recherche Astrophysique de Lyon UMR5574, 69230 Saint-Genis-Laval, France
Univ. Grenoble Alpes, CNRS, IPAG, 38000 Grenoble, France
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Leiden University · Leiden Observatory · University of Amsterdam
Affiliation as printed
Leiden Observatory, Leiden University, PO Box 9513, 2300 RA Leiden, The Netherlands
Sterrenkundig Instituut Anton Pannekoek, Science Park 904, 1098 XH Amsterdam, The Netherlands
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Centre National de la Recherche Scientifique · Institut de Planétologie et d'Astrophysique de Grenoble · Université Grenoble Alpes
Affiliation as printed
Univ. Grenoble Alpes, CNRS, IPAG, 38000 Grenoble, France
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Centre National de la Recherche Scientifique · Institut de Planétologie et d'Astrophysique de Grenoble · European Southern Observatory · Université Grenoble Alpes
Affiliation as printed
European Southern Observatory, Alonso de Córdova 3107, Casilla 19001 Vitacura, Santiago, Chile
Univ. Grenoble Alpes, CNRS, IPAG, 38000 Grenoble, France
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Lyon 1 Université · Centre National de la Recherche Scientifique · Centre de Recherche Astrophysique de Lyon
Affiliation as printed
Univ Lyon, Univ Claude Bernard Lyon1, Ens de Lyon, CNRS, Centre de Recherche Astrophysique de Lyon UMR5574, 69230 Saint-Genis-Laval, France
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Centre National de la Recherche Scientifique · Institut de Planétologie et d'Astrophysique de Grenoble · Monash University · Université Grenoble Alpes
Affiliation as printed
School of Physics and Astronomy, Monash University, Clayton, Vic 3800, Australia
Univ. Grenoble Alpes, CNRS, IPAG, 38000 Grenoble, France
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Centre National de la Recherche Scientifique · Institut de Planétologie et d'Astrophysique de Grenoble · Université Grenoble Alpes
Affiliation as printed
Univ. Grenoble Alpes, CNRS, IPAG, 38000 Grenoble, France
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Centre National de la Recherche Scientifique · Université Paris Sciences et Lettres · Observatoire de Paris · Sorbonne Université · Sorbonne Paris Cité · Laboratoire d’études spatiales et d’instrumentation en astrophysique
Affiliation as printed
LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, Univ. Paris Diderot, Sorbonne Paris Cité, 5 place Jules Janssen, 92195 Meudon, France
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Affiliation as printed
School of Physics and Astronomy, Monash University, Clayton, Vic 3800, Australia
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Centre National de la Recherche Scientifique · Institut de Planétologie et d'Astrophysique de Grenoble · Université Grenoble Alpes
Affiliation as printed
Univ. Grenoble Alpes, CNRS, IPAG, 38000 Grenoble, France
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Centre National de la Recherche Scientifique · Centre Européen de Recherche et de Formation Avancée en Calcul Scientifique · Climat, Environnement, Couplages et Incertitudes · Université de Toulouse
Affiliation as printed
CECI, Université de Toulouse, CNRS, CERFACS, Toulouse, France
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Affiliation as printed
Sterrenkundig Instituut Anton Pannekoek, Science Park 904, 1098 XH Amsterdam, The Netherlands
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Arcetri Astrophysical Observatory
Affiliation as printed
INAF, Osservatorio Astrofisico di Arcetri, Largo Enrico Fermi 5, 50125 Firenze, Italy
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Osservatorio Astronomico di Padova
Affiliation as printed
INAF, Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, 35122 Padova, Italy
INAF, Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova, Italy
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Affiliation as printed
Geneva Observatory, University of Geneva, Chemin des Mailettes 51, 1290 Versoix, Switzerland
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Max Planck Institute for Astronomy
Affiliation as printed
Max Planck Institute for Astronomy, Königstuhl 17, 69117 Heidelberg, Germany
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Lyon 1 Université · Centre National de la Recherche Scientifique · Centre de Recherche Astrophysique de Lyon
Affiliation as printed
Univ Lyon, Univ Claude Bernard Lyon1, Ens de Lyon, CNRS, Centre de Recherche Astrophysique de Lyon UMR5574, 69230 Saint-Genis-Laval, France
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University of Liège · Max Planck Institute for Astronomy
Affiliation as printed
Max Planck Institute for Astronomy, Königstuhl 17, 69117 Heidelberg, Germany
STAR Institute, Université de Liège, Allée du Six Août 19c, 4000 Liège, Belgium
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Max Planck Institute for Astronomy
Affiliation as printed
Max Planck Institute for Astronomy, Königstuhl 17, 69117 Heidelberg, Germany
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Affiliation as printed
Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA 91109, USA
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ETH Zurich · Institute for Particle Physics and Astrophysics
Affiliation as printed
Institute for Particle Physics and Astrophysics, ETH Zurich, Wolfgang-Pauli-Strasse 27, 8093 Zurich, Switzerland
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Leiden University · European Southern Observatory · Leiden Observatory
Affiliation as printed
European Southern Observatory, Alonso de Córdova 3107, Casilla 19001 Vitacura, Santiago, Chile
Leiden Observatory, Leiden University, PO Box 9513, 2300 RA Leiden, The Netherlands
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Centre National de la Recherche Scientifique · Aix-Marseille Université
Affiliation as printed
Aix Marseille Université, CNRS, CNES, LAM, Marseille, France
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Centre National de la Recherche Scientifique · Aix-Marseille Université · Universidad Diego Portales
Affiliation as printed
Aix Marseille Université, CNRS, CNES, LAM, Marseille, France
Escuela de Ingeniería Industrial, Facultad de Ingeniería y Ciencias, Universidad Diego Portales, Av. Ejercito 441, Santiago, Chile
Núcleo de Astronomía, Facultad de Ingeniería y Ciencias, Universidad Diego Portales, Av. Ejercito 441, Santiago, Chile
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Affiliation as printed
European Southern Observatory (ESO), Karl-Schwarzschild-Str. 2, 85748 Garching, Germany
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Max Planck Institute for Astronomy
Affiliation as printed
Max Planck Institute for Astronomy, Königstuhl 17, 69117 Heidelberg, Germany
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Centre National de la Recherche Scientifique · Institut de Planétologie et d'Astrophysique de Grenoble · Université Grenoble Alpes
Affiliation as printed
Univ. Grenoble Alpes, CNRS, IPAG, 38000 Grenoble, France
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Centre National de la Recherche Scientifique · Aix-Marseille Université · Université Paris-Saclay · Office National d'Études et de Recherches Aérospatiales · Département Optique et Techniques Associées
Affiliation as printed
Aix Marseille Université, CNRS, CNES, LAM, Marseille, France
DOTA, ONERA, Université Paris Saclay, 91123 Palaiseau, France
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Centre National de la Recherche Scientifique · Institut de Planétologie et d'Astrophysique de Grenoble · Université Grenoble Alpes
Affiliation as printed
Univ. Grenoble Alpes, CNRS, IPAG, 38000 Grenoble, France
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