Tracing the Galactic Thick Disk to Solar Metallicities
- 6 June 2007
- journal article
- research article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 663 (1) , L13-L16
- https://doi.org/10.1086/519792
Abstract
We show that the Galactic thick disk reaches at least solar metallicities and that it experienced strong chemical enrichment during a period of ~3 Gyr, ending around 8-9 Gyr ago. This finding puts further constraints on the relation and interface between the thin and thick disks and their formation processes. Our results are based on a detailed elemental abundance analysis of 261 kinematically selected F and G dwarf stars in the solar neighborhood: 194 likely members of the thick disk and 67 likely members of the thin disk, in the range -1.3 [Fe/H] +0.4.Keywords
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