SETI public: Trojan pairs in the HD 128311 and HD 82943 planetary systems?

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astro-ph/0510109 [abs, ps, pdf, other] :

Title: Trojan pairs in the HD 128311 and HD 82943 planetary systems?

Authors: Krzysztof Gozdziewski, Maciej Konacki

Categories: astro-ph

Comments: 10 pages (total), 9 figures, submitted to ApJ

Two nearby stars, HD 128311 and HD 82943, are believed to host pairs of
Jupiter-like planets involved in a strong first order 2:1 mean motion
resonance. In this work we reanalyze available radial velocity (RV)
measurements and demonstrate that it is also possible to explain the
observed RV variations of the parents stars as being induced by a pair of
Trojan planets. We show that these Trojan configurations reside in extended
zones of stability in which such systems may easily survive in spite of
large masses of the planets, large eccentricities and nonzero mutual
inclinations of their orbits.

http://arxiv.org/abs/astro-ph/0510109

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