Distance Dependence in the Solar Neighborhood Age-Metallicity Relation

@article{Garnett2000DistanceDI,
  title={Distance Dependence in the Solar Neighborhood Age-Metallicity Relation},
  author={Donald Roy Garnett and Henry A. Kobulnicky},
  journal={The Astrophysical Journal},
  year={2000},
  volume={532},
  pages={1192 - 1196}
}
The age-metallicity relation for F and G dwarf stars in the solar neighborhood, based on the stellar metallicity data of Edvardsson et al., shows an apparent scatter that is larger than expected considering the uncertainties in metallicities and ages. A number of theoretical models have been put forward to explain the large scatter. However, we present evidence, based on the Edvardsson et al. data, along with Hipparcos parallaxes and new age estimates, that the scatter in the age-metallicity… 

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References

SHOWING 1-8 OF 8 REFERENCES

The chemical evolution of the solar neighborhood. II - The age-metallicity relation and the history of star formation in the galactic disk

The age-metallicty relation for the disk in the neighborhood of the Sun is derived from four-color and H..beta.. photometry of a large sample of southern F dwarfs, analyzed in combination with

Some Revised Observational Constraints on the Formation and Evolution of the Galactic Disk

A set of 76 open clusters with abundances based upon DDO photometry and/or moderate dispersion spectroscopy has been transformed to a common [Fe/H] scale and used to study the local structure and

Elemental Abundance Variations and Chemical Enrichment from Massive Stars in Starbursts. II. NGC 1569

We present a long-slit optical spectrophotometric survey covering 0.05 kpc2 in the nearby irregular "post-starburst" galaxy NGC 1569 to search for chemical gradients and inhomogeneities in the

The Definitive Abundance of Interstellar Oxygen

Using the Goddard High Resolution Spectrograph (GHRS) onboard the Hubble Space Telescope, we have obtained high signal-to-noise (S/N) ratio echelle observations of the weak interstellar O I λ1356

A Stochastic Approach to Chemical Evolution

Observations of elemental abundances in the Galaxy have repeatedly shown an intrinsic scatter as a function of time and metallicity. The standard approach to chemical evolution does not attempt to

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