Book contents
- Frontmatter
- Contents
- List of contributors
- Preface
- Part I Abundances in the Galaxy: field stars
- 1 Metal-rich stars and stellar populations: a brief history and new results
- 2 The metal-rich nature of stars with planets
- 3 Solar chemical peculiarities?
- 4 Kinematics of metal-rich stars with and without planets
- 5 Elemental abundance trends in the metal-rich thin and thick disks
- 6 Metal-rich massive stars: how metal-rich are they?
- 7 Hercules-stream stars and the metal-rich thick disk
- 8 An abundance survey of the Galactic thick disk
- Part II Abundances in the Galaxy: Galactic stars in clusters, bulges and the centre
- Part III Observations – abundances in extragalactic contexts
- Part IV Stellar populations and mass functions
- Part V Physical processes at high metallicity
- Part VI Formation and evolution of metal-rich stars and stellar yields
- Part VII Chemical and photometric evolution beyond Solar metallicity
5 - Elemental abundance trends in the metal-rich thin and thick disks
Published online by Cambridge University Press: 02 December 2009
- Frontmatter
- Contents
- List of contributors
- Preface
- Part I Abundances in the Galaxy: field stars
- 1 Metal-rich stars and stellar populations: a brief history and new results
- 2 The metal-rich nature of stars with planets
- 3 Solar chemical peculiarities?
- 4 Kinematics of metal-rich stars with and without planets
- 5 Elemental abundance trends in the metal-rich thin and thick disks
- 6 Metal-rich massive stars: how metal-rich are they?
- 7 Hercules-stream stars and the metal-rich thick disk
- 8 An abundance survey of the Galactic thick disk
- Part II Abundances in the Galaxy: Galactic stars in clusters, bulges and the centre
- Part III Observations – abundances in extragalactic contexts
- Part IV Stellar populations and mass functions
- Part V Physical processes at high metallicity
- Part VI Formation and evolution of metal-rich stars and stellar yields
- Part VII Chemical and photometric evolution beyond Solar metallicity
Summary
Thick disks are common in spiral and S0 galaxies and seem to be an inherent part of galaxy formation and evolution. Our own Milky Way is host to an old thick disk. The stars associated with this disk are enhanced in the α-elements relative to similar stars present in the thin disk. The Milky Way thin disk also appears to be younger than the thick disk. Elementalabundance trends in stellar samples associated with the thin and thick disks in the Milky Way are reviewed. Special attention is paid to how such samples are selected. Our current understanding of the elemental abundances and ages in the Milky Way thick and thin disks is summarized and discussed. The need for differential studies is stressed. Finally, formation scenarios for the thick disk are briefly discussed in the light of the current observational picture.
- Type
- Chapter
- Information
- The Metal-Rich Universe , pp. 41 - 52Publisher: Cambridge University PressPrint publication year: 2008