Stable Planetary Motion in Double Stars

Author(s)

E. Pilat-Lohinger, R. Dvorak, E. Bois, B. Funk

Abstract

The discovery of extra-solar planets in double star systems and the fact

that double and multiple star systems are more numerous than single star

systems like the sun (at least in the solar neighborhood) leads to a

common interest of stability studies of such systems. As a global result

we present the stable regions in binaries with different mass-ratios.

Furthermore, we show the results of a numerical investigation for the

binary γ Cephei. To distinguish between stable and chaotic motion

we use different methods, i.e. the Fast Lyapunov Indicator (FLI), the

Mean Exponential Growth Factor of Nearby Orbits (MEGNO), and

straightforward orbital computations. The two chaos indicators are known

to be fast methods for the determination of the orbital behavior.

Organisation(s)

Department of Astrophysics

External organisation(s)

Université Bordeaux

Volume

321

Pages

410

Publication date

12-2004

Austrian Fields of Science 2012

103004 Astrophysics

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