Tracing the Galactic thick disk to Solar metallicities

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.

Accepted for publication in ApJ Letters

References in corpus (7)

• The Field of Streams: Sagittarius and its Siblings
• Elemental Abundance Survey of The Galactic Thick Disk
• alpha-, r-, and s-process element trends in the Galactic thin and thick disks
• The origin and chemical evolution of carbon in the Galactic thin and thick disks
• Disentangling the Hercules stream
• Revisiting two local constraints of the Galactic chemical evolution
• Barium even-to-odd isotope abundance ratios in thick disk and thin disk stars

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