Resonant Periodic Motion and the Stability of Extrasolar Planetary Systems |
| |
Authors: | John D. Hadjidemetriou |
| |
Affiliation: | (1) Department of Physics, University of Thessaloniki, 54124 Thessaloniki, Greece |
| |
Abstract: | Families of nearly circular periodic orbits of the planetary type are studied, close to the 3/1 mean motion resonance of the two planets, considered both with finite masses. Large regions of instability appear, depending on the total mass of the planets and on the ratio of their masses.Also, families of resonant periodic orbits at the 2/1 resonance have been studied, for a planetary system where the total mass of the planets is the 4% of the mass of the sun. In particular, the effect of the ratio of the masses on the stability is studied. It is found that a planetary system at this resonance is unstable if the mass of the outer planet is smaller than the mass of the inner planet.Finally, an application has been made for the stability of the observed extrasolar planetary systems HD82943 and Gliese 876, trapped at the 2/1 resonance. |
| |
Keywords: | periodic orbits resonances extrasolar systems |
本文献已被 SpringerLink 等数据库收录! |
|