Migration of Jupiter mass planets in discs with laminar accretion flows
| Autor: | Richard P. Nelson, Alessandro Morbidelli, X. S. Ramos, A. Crida, Konstantin Batygin, William Béthune, Elena Lega |
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| Přispěvatelé: | Joseph Louis LAGRANGE (LAGRANGE), Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Protoplanetary disks
protoplanetary discs Angular momentum 010504 meteorology & atmospheric sciences planets and satellites: dynamical evolution and stability FOS: Physical sciences Astrophysics 01 natural sciences Planet methods:numerical 0103 physical sciences 010303 astronomy & astrophysics Astrophysics::Galaxy Astrophysics 0105 earth and related environmental sciences Physics Earth and Planetary Astrophysics (astro-ph.EP) numerical [Methods] Giant planet Astronomy and Astrophysics Laminar flow planet-disc interactions dynamical evolution and stability [Planets and satellites] Accretion (astrophysics) Exoplanet Vortex 13. Climate action Space and Planetary Science [SDU]Sciences of the Universe [physics] Astrophysics::Earth and Planetary Astrophysics Jupiter mass Planet-disk interactions Astrophysics - Earth and Planetary Astrophysics |
| Zdroj: | Astronomy and Astrophysics-A&A Astronomy and Astrophysics-A&A, EDP Sciences, In press, ⟨10.1051/0004-6361/202141675⟩ Lega, E, Morbidelli, A, Nelson, R P, Ramos, X S, Crida, A, Béthune, W & Batygin, K 2022, ' Migration of Jupiter mass planets in discs with laminar accretion flows ', Astronomy and Astrophysics, vol. 658, A32 . https://doi.org/10.1051/0004-6361/202141675 |
| ISSN: | 0004-6361 |
| DOI: | 10.1051/0004-6361/202141675⟩ |
| Popis: | Migration of giant planets in discs with low viscosity has been studied recently. The proportionality between migration speed and the disc's viscosity is broken by the presence of vortices that appear at the edges of the planet-induced gap. Our goal is to investigate vortex-driven migration in low-viscosity discs in the presence of radial advection of gas, as expected from angular momentum removal by magnetised disc winds. We performed three dimensional simulations using the grid-based code FARGOCA. We mimicked the effects of a disc wind by applying a synthetic torque on a surface layer of the disc characterised by a prescribed column density Sigma_A so that it results in a disc accretion rate of 10^-8 Solar masses per year. Discs with this structure are called 'layered' and the layer where the torque is applied is denoted as 'active'. We also consider the case of accretion focussed near the disc midplane to mimic transport properties induced by a large Hall effect or by weak Ohmic diffusion. We observe two migration phases: in the first phase, the migration of the planet is driven by the vortex and is directed inwards. This phase ends when the vortex disappear. Migration depends on the ability of the torque from the planet to block the accretion flow. When the flow is fast and unimpeded (small Sigma_A) migration is very slow. When the accretion flow is completely blocked, migration is faster and the speed is controlled by the rate at which the accretion flow refills the gap behind the migrating planet. The migration speed of a giant planet in a layered protoplanetary disc depends on the thickness of the accreting layer. The lack of large-scale migration apparently experienced by the majority of giant exoplanets can be explained if the accreting layer is sufficiently thin to allow unimpeded accretion through the disc. Comment: 14 pages, 11 figures |
| Databáze: | OpenAIRE |
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