Journal
ASTRONOMY & ASTROPHYSICS
Volume 384, Issue 3, Pages 879-883Publisher
EDP SCIENCES S A
DOI: 10.1051/0004-6361:20020011
Keywords
stars : planetary systems; stars : abundances
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We have reconstructed the galactic orbits of the parent stars of exoplanets. For comparison, we have recalculated the galactic orbits of stars from the Edvardsson et al. (1993) catalog. A comparison between the two samples indicates that stars with planets are not kinematically peculiar. At each perigalactic distance stars with planets have a metallicity systematically larger than the average for the comparison sample. We argue that this result favors scenarios where the presence of planets is the cause of the higher metallicity of stars with planets.
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