Circumbinary, not transitional: On the spiral arms, cavity, shadows, fast radial flows, streamers and horseshoe in the HD142527 disc

Autor: Alice Zurlo, Simon Casassus, Valentin Christiaens, Christophe Pinte, Giuseppe Lodato, Daniel Mentiplay, Philip J. Armitage, M Sebastian Perez, Daniel J. Price, Enrico Ragusa, Attila Juhasz, Sebastian Marino, Nicolás Cuello, Jorge Cuadra, Grant M. Kennedy, Guillaume Laibe
Přispěvatelé: Institut de Planétologie et d'Astrophysique de Grenoble (IPAG), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Centre de Recherche Astrophysique de Lyon (CRAL), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)
Jazyk: angličtina
Rok vydání: 2018
Předmět:
FOS: Physical sciences
Astrophysics::Cosmology and Extragalactic Astrophysics
01 natural sciences
accretion
0103 physical sciences
Astrophysics::Solar and Stellar Astrophysics
010303 astronomy & astrophysics
Solar and Stellar Astrophysics (astro-ph.SR)
Astrophysics::Galaxy Astrophysics
QB
Earth and Planetary Astrophysics (astro-ph.EP)
Physics
Spiral galaxy
[SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph]
010308 nuclear & particles physics
Astronomy
Astronomy and Astrophysics
submillimetre: planetary systems
planet-disc interactions
accretion discs
protoplanetary discs
binaries: general
Astrophysics - Solar and Stellar Astrophysics
[SDU]Sciences of the Universe [physics]
Space and Planetary Science
Research council
Astrophysics::Earth and Planetary Astrophysics
Circumbinary planet
Astrophysics - Earth and Planetary Astrophysics
Zdroj: NASA Astrophysics Data System
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, 2018, 477, pp.1270-1284. ⟨10.1093/mnras/sty647⟩
ISSN: 1365-2966
0035-8711
DOI: 10.1093/mnras/sty647⟩
Popis: We present 3D hydrodynamical models of the HD142527 protoplanetary disc, a bright and well studied disc that shows spirals and shadows in scattered light around a 100 au gas cavity, a large horseshoe dust structure in mm continuum emission, together with mysterious fast radial flows and streamers seen in gas kinematics. By considering several possible orbits consistent with the observed arc, we show that all of the main observational features can be explained by one mechanism - the interaction between the disc and the observed binary companion. We find that the spirals, shadows and horseshoe are only produced in the correct position angles by a companion on an inclined and eccentric orbit approaching periastron - the 'red' family from Lacour et al. (2016). Dust-gas simulations show radial and azimuthal concentration of dust around the cavity, consistent with the observed horseshoe. The success of this model in the HD142527 disc suggests other mm-bright transition discs showing cavities, spirals and dust asymmetries may also be explained by the interaction with central companions.
16 pages, 12 figures, accepted to MNRAS. Movies at http://users.monash.edu.au/~dprice/pubs/HD142527/
Databáze: OpenAIRE
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