The Dynamical Simulations of the Planets Orbiting GJ 876

Details The Dynamical Simulations of the Planets Orbiting GJ 876 The Dynamical Simulations of the Planets Orbiting GJ 876

2002-05-03

arxiv.org/abs/astro-ph/0205043v1

Astrophys.J. 572 (2003) 1041-1047; Erratum-ibid. 582 (2003) 558

Astronomy and Astrophysics

Astrophysics

17 pages, 8 figures available through authors, to be published in ApJ, June 20,2002 (V572, see figures)

Scientific paper

10.1086/340350

We have performed simulations to investigate the dynamics of the M dwarf star GJ 876 in an attempt to reveal any stabilizing mechanism for sustaining the system.We simulated different coplanar and noncoplanar configurations of two-planet systems and other cases.From the simulations,we found that the 2 :1 mean-motion resonance between two planets can act as an effective mechanism for maintaining the stability of the system.This result is explained by a proposed analytical model.Using this model,we studied the region of motion of the inner planet by varying the parameters of the system,and we detected that the analytical results are well consistent with the numerical simulations.

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