Long Period Exoplanets
نویسندگان
چکیده
Recent imaging campaigns indicate the possible existence of massive planets on ∼> 1000 year orbits about a few percent of normal stars. Such objects are not easily explained in most current planet formation models. In this Letter we use a large ensemble of N-body simulations to evaluate the potential for planet scattering during relaxation of dynamically active systems to explain very long period, massive planets. We find that such a mechanism could indeed be at play, and that statistical samples of long period planets could place interesting constraints on early stage planet formation scenarios. Results from direct imaging and microlensing surveys are complementary probes of this dynamical relaxation process. Subject headings: planetary systems: formation – celestial mechanics
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متن کاملar X iv : a st ro - p h / 06 11 65 8 v 3 2 6 N ov 2 00 6 Four New Exoplanets , and Hints of Additional Substellar Companions to Exoplanet Host Stars
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متن کاملar X iv : a st ro - p h / 06 11 65 8 v 1 2 1 N ov 2 00 6 Four New Exoplanets , and Hints of Additional Substellar Companions to Exoplanet Host Stars
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