Galactic orbits of stars with planets

Details Galactic orbits of stars with planets Galactic orbits of stars with planets

2001-12-22

arxiv.org/abs/astro-ph/0112535v1

Astronomy and Astrophysics

Astrophysics

12 pages, 2 figures

Scientific paper

10.1051/0004-6361:20020011

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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