TY - JOUR
T1 - The protoplanetary disc around HD 169142
T2 - Circumstellar or circumbinary?
AU - Poblete, P. P.
AU - Cuello, N.
AU - Perez, S.
AU - Marino, S.
AU - Calcino, J.
AU - MacÍas, E.
AU - Ribas, A.
AU - Zurlo, A.
AU - Cuadra, J.
AU - Montesinos, M.
AU - Zúñiga-Fernández, S.
AU - Bayo, A.
AU - Pinte, C.
AU - Menard, F.
AU - Price, D. J.
N1 - Publisher Copyright:
© 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.
PY - 2022/2/1
Y1 - 2022/2/1
N2 - 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.
AB - 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.
KW - binaries: close
KW - hydrodynamics
KW - methods: numerical
KW - planet-disc interactions
KW - protoplanetary discs
KW - stars: individual: HD 169142
UR - http://www.scopus.com/inward/record.url?scp=85126717778&partnerID=8YFLogxK
U2 - 10.1093/mnras/stab3474
DO - 10.1093/mnras/stab3474
M3 - Article
AN - SCOPUS:85126717778
SN - 0035-8711
VL - 510
SP - 205
EP - 215
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 1
ER -