@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 = "27 abr. 2024"
}