Planets in double stars: the γ Cephei system

Details Planets in double stars: the γ Cephei system Planets in double stars: the γ Cephei system

Aug 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004rmxac..21..222d&link_type=abstract

The Environment and Evolution of Double and Multiple Stars, Proceedings of IAU Colloquium 191, held 3-7 February, 2002 in Merida

Astronomy and Astrophysics

Astronomy

10

Stars: Individual ( Γ Cep), Stars: Planetary Systems

Scientific paper

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.

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