Abundances and ages of the deconvolved thin/thick disks of the Galaxy

Details Abundances and ages of the deconvolved thin/thick disks of the Galaxy Abundances and ages of the deconvolved thin/thick disks of the Galaxy

2004-11-02

arxiv.org/abs/astro-ph/0411057v1

Astronomy and Astrophysics

Astrophysics

To appear in Chemical Abundances and Mixing in Stars in the Milky Way Galaxy and its Satellites, ESO Astrophysics Symposia, ed

Scientific paper

We have investigated the abundance of several chemical elements in two large stellar samples kinematically representative of the thin and the thick disks of the Galaxy. Chemical, kinematical and age data have been collected from high quality sources in the literature. Velocities (U,V,W) have been computed and used to select stars with the highest probability to belong to the thin disk and the thick disk respectively. Our results show that the two disks are chemically well separated. Both exhibit a decline of [$\alpha$/Fe] with increasing [Fe/H]. A transition between the thin/thick disks stars is observed at 10 Gyr.

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