A Study of Potential Earth-like Planets in the GJ 876 Planetary System |
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| Institution: | 1. Dipartimento di Scienze della Terra, Università di Pisa, 56126 Pisa, Italy;2. Dottorato Regionale in Scienze della Terra Pegaso, 56126 Pisa, Italy;3. D.O. Terre et Histoire de la Vie, Institut Royal des Sciences Naturelles de Belgique, 1000 Brussels, Belgium;4. Scuola di Scienze e Tecnologie, Università di Camerino, 62032 Camerino, Italy;5. Dipartimento di Scienze dell''Ambiente e del Territorio e di Scienze della Terra, Università di Milano Bicocca, 20126 Milano, Italy;6. Departamento de Paleontologia de Vertebrados, Museo de Historia Natural-UNMSM, Lima 14, Peru;1. Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr, Pasadena, CA 91109, United States of America;2. Georgia Institute of Technology, Department of Earth and Atmospheric Sciences, 311 Ferst Dr, Atlanta, GA 30332, United States of America |
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| Abstract: | We perform numerical simulations to investigate potential Earth-like planets in the GJ 876 planetary system. We show that the secular resonances ν1 and ν2 (resulting respectively from the inner and outer giant planets) can excite the eccentricities of Earth-like planets with orbits 0.21 AU ≤ a < 0.50 AU and cause them to be ejected out of the system in a short time. However, in the dynamical sense, Earth-like planets potentially exist in the region 0.50 AU ≤ a ≤ 1.00 AU, in stable low-eccentricity orbits which may last up to 105 yr. |
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