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Trojans in Exosystems with Two Massive Planets

Published online by Cambridge University Press:  29 April 2014

Rudolf Dvorak ,
Li-Yong Zhou  and
Helmut Baudisch
Rudolf Dvorak
Affiliation:
Universitätssternwarte, University of Vienna, Türkenschanzsstrasse 17, A-1180 Vienna, AUSTRIA email: [email protected]
Li-Yong Zhou
Affiliation:
Astronomy Department & Key Laboratory of Modern Astronomy and Astrophysics in Ministry of Education, Nanjing University, Nanjing 210093, CHINA email: [email protected]
Helmut Baudisch
Affiliation:
Universitätssternwarte, University of Vienna, Türkenschanzsstrasse 17, A-1180 Vienna, AUSTRIA email: [email protected]
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Abstract

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We take as dynamical model for extrasolar planetary systems a central star like our Sun and two giant planets m1 and m2 like Jupiter and Saturn. We change the mass ratio μ=m2/m1 of the two large planets for a wide range of 1/16 < μ < 16. We also change the ratio between the initial semi-major axes (ν=a2/a1) in the range of 1.2 < ν < 3 to model the different architecture of extrasolar planetary systems hosting two giant planets. The results for possible Trojans (Trojan planets) in the equilateral equilibrium points of the inner planet m1 and the outer planet m2 were derived with the aid of numerical integration. It turned out that in many configurations – depending on the mass ratios μ and the semi-major axes ratio ν – giant planets may host Trojans.

Keywords

Trojansextrasolar planetstwo massive planets
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S293: Formation, Detection, and Characterization of Extrasolar Habitable Planets , August 2012 , pp. 152 - 158
Copyright
Copyright © International Astronomical Union 2014 

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