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Dynamical Stability and Habitability of Extra-Solar Planets

Published online by Cambridge University Press:  23 April 2012

Elke Pilat-Lohinger
Elke Pilat-Lohinger*
Affiliation:
Institute of Astronomy, University of Vienna, Türkenschanzstrasse 17, A-1180 Vienna, Austria email: elke.pilat-lohinger@univie.ac.at.
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Abstract

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Observations of about 60 binary star systems hosting exoplanets indicate the necessity of stability studies of planetary motion in such multi-stellar systems. For wide binary systems with separations between hundreds and thousands of AU, the results from single-star systems may be applicable but, in tight double stars systems, we have to take the stellar interactions into account which influences the planetary motion significantly.

This review discusses the different types of planetary motion in double stars and the stability of the planets for different binary configurations. An application to the most famous tight binary system (γ Cephei) is also shown. Finally, we analyze the habitability from the dynamical point of view in such systems, where we discuss the motion of terrestrial-like planets in the so-called habitable zone.

Keywords

Binaries: generalplanetary systemsn-body simulationsnumerical
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 7 , Symposium S282: From Interacting Binaries to Exoplanets: Essential Modeling Tools , July 2011 , pp. 539 - 544
Copyright
Copyright © International Astronomical Union 2012

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