Galactic orbits of stars with planets
Abstract
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. (\cite{edva93}) 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. Tables 1, 2, and 4 are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/384/879
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- March 2002
- DOI:
- 10.1051/0004-6361:20020011
- arXiv:
- arXiv:astro-ph/0112535
- Bibcode:
- 2002A&A...384..879B
- Keywords:
-
- STARS: PLANETARY SYSTEMS;
- STARS: ABUNDANCES;
- Astrophysics
- E-Print:
- 12 pages, 2 figures