A&A 393, 997-1013 (2002)
DOI: 10.1051/0004-6361:20021061

Stability of the 47 UMa planetary system

K. Gozdziewski

Torun Centre for Astronomy, N. Copernicus University, Gagarin Str. 11, 87100 Torun, Poland

(Received 19 February 2002 / Accepted 19 July 2002)

Abstract
In this paper we study the stability of the 47 UMa planetary system in the framework of the N-body problem, with application of the MEGNO technique. The method makes it possible to distinguish rapidly between chaotic and regular evolution of a planetary system. Using the initial conditions of the 47 UMa system found by Fischer et al. ([CITE]) we estimate the dynamical bounds on orbital parameters that provide stable motions of the system. We analyze whether a telluric planet can survive orbitally in the habitable zone of the system.

Key words: celestial mechanics -- stellar dynamics -- methods: numerical, N-body simulations -- planetary systems -- stars: individual: 47 UMa

© ESO 2002

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