Planets in double stars: the γ Cephei system

Author(s)

R. Dvorak, E. Pilat-Lohinger, E. Bois, B. Funk, F. Freistetter, L. Kiseleva-Eggleton

Abstract

Up to now we have evidence for some 15 planets moving in double stars.

They are all of the so-called S-type, which means that they are orbiting

one of the primaries. Only two of the binaries have separations in the

order of the distances where the planets in our Solar system orbit the

Sun, namely Gliese 86 and γ Cep. In this study we investigate the

stability of the recently discovered planet in γ Cep with respect

to the orbital parameters of the binary and of the planet. Additionally

we check the region inside and outside the planet's orbit (a = 2.1 AU).

Even when the mass of an additional planet in 1 AU would be in the order

of that of Jupiter, the discovered planet would be in a stable orbit.

Organisation(s)

Department of Astrophysics

Volume

21

Pages

222-226

Publication date

08-2004

Austrian Fields of Science 2012

103003 Astronomy

Keywords

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