Dynamical evolution of the Gliese 581 planetary system

Details Dynamical evolution of the Gliese 581 planetary system Dynamical evolution of the Gliese 581 planetary system

Jul 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007sf2a.conf..369b&link_type=abstract

SF2A-2007: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics held in Grenoble, France, July

Astronomy and Astrophysics

Astrophysics

Scientific paper

Gl581 is an M-type dwarf harbouring a 3 Earth-sized planets system (Udry et al. 2007). The two outer planets lie potentially within the habitable zone of this star. We investigate the dynamical stability of this system using the symplectic N-body code SyMBA (Lee et al. 1998). The systems appears remarkably stable. The eccentricity of the small planet ranges secularly between 0 and 0.15. We also test different inclinations and eccentricities. In any case (apart from nearly pole-on configurations), we have stability. We can safely stress that this system, and thus the planetary climate, is stable. This makes the habitable planets potentially suitable for life development.

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