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Title: Orbital Evolution of Moons in Weakly Accreting Circumplanetary Disks

Abstract

We investigate the formation of hot and massive circumplanetary disks (CPDs) and the orbital evolution of satellites formed in these disks. Because of the comparatively small size-scale of the sub-disk, quick magnetic diffusion prevents the magnetorotational instability (MRI) from being well developed at ionization levels that would allow MRI in the parent protoplanetary disk. In the absence of significant angular momentum transport, continuous mass supply from the parental protoplanetary disk leads to the formation of a massive CPD. We have developed an evolutionary model for this scenario and have estimated the orbital evolution of satellites within the disk. We find, in a certain temperature range, that inward migration of a satellite can be stopped by a change in the structure due to the opacity transitions. Moreover, by capturing second and third migrating satellites in mean motion resonances, a compact system in Laplace resonance can be formed in our disk models.

Authors:
;  [1];  [2];  [3]
  1. Niels Bohr International Academy, The Niels Bohr Institute, Blegdamsvej 17, DK-2100, Copenhagen Ø (Denmark)
  2. Department of Physics, Nagoya University, Furo-cho, Showa-ku, Nagoya, Aichi, 464-8602 (Japan)
  3. Astronomical Institute, Tohoku University, 6-3 Aramaki, Aoba-ku, Sendai, 980-8578 (Japan)
Publication Date:
OSTI Identifier:
22663716
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astronomical Journal (Online); Journal Volume: 153; Journal Issue: 4; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ANGULAR MOMENTUM; AVAILABILITY; DIFFUSION; INSTABILITY; IONIZATION; MASS; MIGRATION; NMR IMAGING; OPACITY; PLANETS; PROTOPLANETS; RESONANCE

Citation Formats

Fujii, Yuri I., Gressel, Oliver, Kobayashi, Hiroshi, and Takahashi, Sanemichi Z., E-mail: yuri.fujii@nbi.ku.dk. Orbital Evolution of Moons in Weakly Accreting Circumplanetary Disks. United States: N. p., 2017. Web. doi:10.3847/1538-3881/AA647D.
Fujii, Yuri I., Gressel, Oliver, Kobayashi, Hiroshi, & Takahashi, Sanemichi Z., E-mail: yuri.fujii@nbi.ku.dk. Orbital Evolution of Moons in Weakly Accreting Circumplanetary Disks. United States. doi:10.3847/1538-3881/AA647D.
Fujii, Yuri I., Gressel, Oliver, Kobayashi, Hiroshi, and Takahashi, Sanemichi Z., E-mail: yuri.fujii@nbi.ku.dk. Sat . "Orbital Evolution of Moons in Weakly Accreting Circumplanetary Disks". United States. doi:10.3847/1538-3881/AA647D.
@article{osti_22663716,
title = {Orbital Evolution of Moons in Weakly Accreting Circumplanetary Disks},
author = {Fujii, Yuri I. and Gressel, Oliver and Kobayashi, Hiroshi and Takahashi, Sanemichi Z., E-mail: yuri.fujii@nbi.ku.dk},
abstractNote = {We investigate the formation of hot and massive circumplanetary disks (CPDs) and the orbital evolution of satellites formed in these disks. Because of the comparatively small size-scale of the sub-disk, quick magnetic diffusion prevents the magnetorotational instability (MRI) from being well developed at ionization levels that would allow MRI in the parent protoplanetary disk. In the absence of significant angular momentum transport, continuous mass supply from the parental protoplanetary disk leads to the formation of a massive CPD. We have developed an evolutionary model for this scenario and have estimated the orbital evolution of satellites within the disk. We find, in a certain temperature range, that inward migration of a satellite can be stopped by a change in the structure due to the opacity transitions. Moreover, by capturing second and third migrating satellites in mean motion resonances, a compact system in Laplace resonance can be formed in our disk models.},
doi = {10.3847/1538-3881/AA647D},
journal = {Astronomical Journal (Online)},
number = 4,
volume = 153,
place = {United States},
year = {Sat Apr 01 00:00:00 EDT 2017},
month = {Sat Apr 01 00:00:00 EDT 2017}
}