Computer Science
Scientific paper
Feb 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005dpps.conf...71p&link_type=abstract
Dynamics of Populations of Planetary Systems, Proceedings of IAU Colloquium #197, held 31 August - 4 Spetember, 2004 in Belgrade
Computer Science
1
Binaries: Close, Celestial Mechanics, Methods: Numerical.
Scientific paper
Among more than 120 discovered exo-planets, less than 20 were found in double star systems. Out of this sample we studied the planetary motion in those systems that can be regarded as close binaries, i.e. HD41004 AB, gamma Cephei and Gliese 86. In this study we concentrate on the first two systems, where the secondaries are M4 V dwarfs at about 20 AU from the host-star. A comparison of previous studies where the dynamical behavior was studied in the (semi-major axis, inclination) plane (see Dvorak et al. 2003a) for gamma Cephei and Pilat-Lohinger & Funk (2004) for HD41004 A) shows significant differences in the stability maps. Our numerical investigation examines the region between 0.5 and 1.2 AU, which is influenced mainly by mean motion resonances when the initial position of the detected planet a_{gp} < 1.5 AU. If we move the planet farther away from the host-star (to distances > 1.5 AU) we observe an arc-shaped chaotic structure in the dynamical map.
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