@Article{DeiennoNesvVokrYoko:2014:OrPeGa,
author = "Deienno, Rogerio and Nesvorny, David and Vokrouhlicky, David and
Yokoyama, Tadashi",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Southwest
Research Institute} and {Charles University} and {Universidade
Estadual Paulista (UNESP)}",
title = "Orbital perturbations of the galilean satellites during planetary
encounters",
journal = "Astronomical Journal",
year = "2014",
volume = "148",
number = "25",
month = "Aug.",
keywords = "planets and satellites: dynamical evolution and stability, planets
and satellites: general, planets and satellites: individual
(Jupiter, Galilean satellites).",
abstract = "The Nice model of the dynamical instability and migration of the
giant planets can explain many properties of the present solar
system, and can be used to constrain its early architecture. In
the jumping-Jupiter version of the Nice model, required from the
terrestrial planet constraint and dynamical structure of the
asteroid belt, Jupiter has encounters with an ice giant. Here, we
study the survival of the Galilean satellites in the
jumping-Jupiter model. This is an important concern because the
ice-giant encounters, if deep enough, could dynamically perturb
the orbits of the Galilean satellites and lead to implausible
results. We performed numerical integrations where we tracked the
effect of planetary encounters on the Galilean moons. We
considered three instability cases from Nesvorny \& Morbidelli
that differed in the number and distribution of encounters. We
found that in one case, where the number of close encounters was
relatively small, the Galilean satellite orbits were not
significantly affected. In the other two, the orbital
eccentricities of all moons were excited by encounters, Callisto's
semimajor axis changed, and, in a large fraction of trials, the
Laplace resonance of the inner three moons was disrupted. The
subsequent evolution by tides damps eccentricities and can
recapture the moons in the Laplace resonance. A more important
constraint is represented by the orbital inclinations of the
moons, which can be excited during the encounters and not
appreciably damped by tides. We find that one instability case
taken from Nesvorny \& Morbidelli clearly does not meet this
constraint. This shows how the regular satellites of Jupiter can
be used to set limits on the properties of encounters in the
jumping-Jupiter model, and help us to better understand how the
early solar system evolved.",
doi = "10.1088/0004-6256/148/2/25",
url = "http://dx.doi.org/10.1088/0004-6256/148/2/25",
issn = "0004-6256",
label = "isi 2014-11 DeiennoNesvVokrYoko:2014:ORPEGA",
language = "en",
urlaccessdate = "02 maio 2024"
}