binaries: close; hydrodynamics; methods: numerical; planet-disc interactions; protoplanetary discs; stars: individual: HD 169142; Binaries: close; Circumstellar; Method: numerical; Planet-disk interactions; Protoplanetary disks; Star: individual: HD 169142; Stars: individual: proxima Centauri; Stellar system; Stellars; Young stellar objects; Astronomy and Astrophysics; Space and Planetary Science
Abstract :
[en] Stellar binaries represent a substantial fraction of stellar systems, especially among young stellar objects. Accordingly, binaries play an important role in setting the architecture of a large number of protoplanetary discs. Binaries in coplanar and polar orientations with respect to the circumbinary disc are stable configurations and could induce non-axisymmetric structures in the dust and gas distributions. In this work, we suggest that the structures shown in the central region of the protoplanetary disc HD 169142 are produced by the presence of an inner stellar binary and a circumbinary (P-type) planet. We find that a companion with a mass ratio of 0.1, semimajor axis of 9.9 au, eccentricity of 0.2, and inclination of 90°, together with a 2 MJ coplanar planet on a circular orbit at 45 au reproduce the structures at the innermost ring observed at 1.3 mm and the shape of spiral features in scattered light observations. The model predicts changes in the disc's dust structure, and star's astrometric parameters, which would allow testing its veracity by monitoring this system over the next 20 yr.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Poblete, P.P. ; Astrophysikalisches Institut, Friedrich-Schiller-Universität Jena, Jena, Germany ; Núcleo Milenio de Formación Planetaria (NPF), Chile
Cuello, N. ; IPAG (UMR 5274), Universite Grenoble Alpes/CNRS, Grenoble, France
Perez, S. ; Departamento de Física, Universidad de Santiago de Chile, Santiago, Chile ; Center for Interdisciplinary Research in Astrophysics and Space Exploration (CIRAS), Universidad de Santiago de Chile, Estación Central, Santiago, Chile
Marino, S. ; Jesus College, University of Cambridge, Cambridge, United Kingdom ; Institute of Astronomy, University of Cambridge, Cambridge, United Kingdom
Calcino, J. ; Theoretical Division, Los Alamos National Laboratory, Los Alamos, United States ; School of Mathematics and Physics, The University of Queensland, Brisbane, Australia
MacÍas, E. ; Joint ALMA Observatory, Casilla, Chile ; European Southern Observatory, Casilla, Chile
Zurlo, A. ; Núcleo de Astronomía, Facultad de Ingeniería y Ciencias, Universidad Diego Portales, Santiago, Chile ; Escuela de Ingeniería Industrial, Facultad de Ingeniería y Ciencias, Universidad Diego Portales, Santiago, Chile
Cuadra, J. ; Núcleo Milenio de Formación Planetaria (NPF), Chile ; Departamento de Ciencias, Facultad de Artes Liberales, Universidad Adolfo Ibáñez, Viña del Mar, Chile
Montesinos, M.; Núcleo Milenio de Formación Planetaria (NPF), Chile ; Escuela de Ciencias, Universidad Viña Del Mar, Viña del Mar, Chile
Zúñiga Fernández, Sebastián Gaspar ; Université de Liège - ULiège > Astrobiology ; Astrophysikalisches Institut, Friedrich-Schiller-Universität Jena, Jena, Germany ; European Southern Observatory, Casilla, Chile ; Instituto de Física y Astronomía, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso, Chile
Bayo, A. ; Núcleo Milenio de Formación Planetaria (NPF), Chile ; Instituto de Física y Astronomía, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso, Chile
Pinte, C.; IPAG (UMR 5274), Universite Grenoble Alpes/CNRS, Grenoble, France ; School of Physics and Astronomy, Monash University, Clayton, Australia
Menard, F.; IPAG (UMR 5274), Universite Grenoble Alpes/CNRS, Grenoble, France
Price, D.J. ; School of Physics and Astronomy, Monash University, Clayton, Australia
Laboratory Directed Research and Development Program (LDRD)
Funders :
DFG - Deutsche Forschungsgemeinschaft [DE] EU - European Union [BE] ESO - European Southern Observatory [DE] FONDECYT - National Fund for Scientific and Technological Development [CL] ARC - Australian Research Council [AU]
Funding text :
We thank A. Tokovinin for promptly observing this system with Southern Astrophysical Research Telescope , as reported in Sec- tion 4.1.2. This work has been partially supported by the Deutsche Forschungsgemeinschaft (grant LO 1715/2-1, within Research Unit FOR 2285 ‘Debris Disks in Planetary System’. This project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie Actions grant agreements no. 210021 and no. 823823 (DUST- BUSTERS). JCa acknowledges support from an Australian Go v ern- ment Research Training Program Scholarship, and the Laboratory Directed Research and Development Program (LDRD; approved for public release as LA-UR-21-24101). SP y AZ acknowledge support from Millennium Nucleus NCN2021 080. JCu, MM, SZ-F, and AB acknowledge support by ANID, –Millennium Science Initiative Program –NCN19 171. SZ-F acknowledges financial support from the European Southern Observatory via its studentship program and ANID via PFCHA/Doctorado Nacional/2018-21181044. SP acknowledges support from ANID F ondec yt Re gular grant 1191934. AZ acknowledges support from the FONDECYT Iniciaci ´on en investigaci ´on project number 11190837. SM acknowledges support from a Junior Research Fellowship from Jesus College, Cambridge. The Geryon2 cluster housed at the Centro de Astro-Ingenier ´ıa UC was used for the calculations performed in this paper. The BASAL PFB-06 CATA, Anillo ACT-86, FONDEQUIP AIC-57, and QUIMAL 130008 provided funding for several improvements to the Geryon/Geryon2 cluster. CP and DJP acknowledge Australian Research Council funding via FT170100040 and DP180104235.
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