Book contents
- Frontmatter
- Contents
- List of contributors
- Preface
- Part I Abundances in the Galaxy: field stars
- Part II Abundances in the Galaxy: Galactic stars in clusters, bulges and the centre
- 9 Galactic open clusters with supersolar metallicities
- 10 Old and very-metal-rich open clusters in the BOCCE project
- 11 Massive-star versus nebular abundances in the Orion nebula
- 12 Abundance surveys of metal-rich bulge stars
- 13 Metal abundances in the Galactic Center
- 14 Light elements in the Galactic bulge
- 15 Metallicity and ages of selected G–K giants
- 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
15 - Metallicity and ages of selected G–K giants
Published online by Cambridge University Press: 02 December 2009
- Frontmatter
- Contents
- List of contributors
- Preface
- Part I Abundances in the Galaxy: field stars
- Part II Abundances in the Galaxy: Galactic stars in clusters, bulges and the centre
- 9 Galactic open clusters with supersolar metallicities
- 10 Old and very-metal-rich open clusters in the BOCCE project
- 11 Massive-star versus nebular abundances in the Orion nebula
- 12 Abundance surveys of metal-rich bulge stars
- 13 Metal abundances in the Galactic Center
- 14 Light elements in the Galactic bulge
- 15 Metallicity and ages of selected G–K giants
- 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
We have derived metallicity, masses, and ages for two samples of nearby giant stars, which have been observed with the aim of understanding their nature of the radial-velocity (RV) variability and to search for planetary companions. Our stars have reliable Hipparcos parallaxes, and for several we also have measured angular diameters; the parameters we retrieve from our inversion process are in very good agreement with the observed ones. Among our results, we find that the stars regarded as candidates to host planetary companions are not preferencially metal-rich, which is at odds with what is found for main-sequence stars. We also find that stars younger than ∼1 Gyr can be described by a single metallicity and that an age–metallicity relationship applies to our samples.
- Type
- Chapter
- Information
- The Metal-Rich Universe , pp. 132 - 138Publisher: Cambridge University PressPrint publication year: 2008