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      STIS CORONAGRAPHIC IMAGING OF FOMALHAUT: MAIN BELT STRUCTURE AND THE ORBIT OF FOMALHAUTb

      , , ,

      The Astrophysical Journal

      IOP Publishing

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          Origin of the orbital architecture of the giant planets of the Solar System.

          Planetary formation theories suggest that the giant planets formed on circular and coplanar orbits. The eccentricities of Jupiter, Saturn and Uranus, however, reach values of 6 per cent, 9 per cent and 8 per cent, respectively. In addition, the inclinations of the orbital planes of Saturn, Uranus and Neptune take maximum values of approximately 2 degrees with respect to the mean orbital plane of Jupiter. Existing models for the excitation of the eccentricity of extrasolar giant planets have not been successfully applied to the Solar System. Here we show that a planetary system with initial quasi-circular, coplanar orbits would have evolved to the current orbital configuration, provided that Jupiter and Saturn crossed their 1:2 orbital resonance. We show that this resonance crossing could have occurred as the giant planets migrated owing to their interaction with a disk of planetesimals. Our model reproduces all the important characteristics of the giant planets' orbits, namely their final semimajor axes, eccentricities and mutual inclinations.
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            Dynamical Outcomes of Planet‐Planet Scattering

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              Dynamics of Systems of Two Close Planets

               Brett Gladman (1993)
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                Author and article information

                Journal
                The Astrophysical Journal
                ApJ
                IOP Publishing
                0004-637X
                1538-4357
                September 20 2013
                September 04 2013
                : 775
                : 1
                : 56
                Article
                10.1088/0004-637X/775/1/56
                © 2013

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