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The chemical evolution of the solar neighborhood. II - The age-metallicity relation and the history of star formation in the galactic disk
Abstract
The age-metallicity 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 theoretical isochrones. It is found that the mean metallicity of the disk increased by about a factor of five between 12 and 5 billion years ago and has increased only slightly since then. The star formation rate (SFR) for the disk as a function of time is obtained from the number count data, taking into account stellar evolution and the disk scale height corrections. The SFR which produces a metallicity distribution for the F stars consistent with the G dwarf data is one where the SFR has remained relatively constant over the lifetime of the disk. It is concluded that the disk has collapsed by about a factor of 6 perpendicular to the galactic plane during its lifetime, most of the collapse occurring 13 to 7 billion years ago.
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Cited by
The New Galaxy: Signatures of Its Formation
Freeman, K., & Bland-Hawthorn, J. (2002) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev.astro.40.060401.093840 · Cited by 1,160
Riding the Spiral Waves: Implications of Stellar Migration for the Properties of Galactic Disks
Roškar, R., Debattista, V. P., Quinn, T. R., Stinson, G. S., & Wadsley, J. (2008) · The Astrophysical Journal · doi:10.1086/592231 · Cited by 501
On Variations in the Peak Luminosity of Type Ia Supernovae
Timmes, F. X., Brown, E. F., & Truran, J. W. (2003) · The Astrophysical Journal · doi:10.1086/376721 · Cited by 332
Properties of H i discs in the Auriga cosmological simulations
Marinacci, F., Grand, R. J. J., Pakmor, R., Springel, V., Gómez, F. A., Frenk, C. S., & White, S. D. M. (2017) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/stw3366 · Cited by 75
Metadata
- Authors
- Twarog, B. A.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 1980-11
- Volume
- 242
- Pages
- 242
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W2081844734
- Cited by
- 366
- References
- 0
- FWCI
- 9.31
- Type
- journal article
- Language
- en
- Open access
- closed
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- Twarog, B. A. (1980). The chemical evolution of the solar neighborhood. II - The age-metallicity relation and the history of star formation in the galactic disk. The Astrophysical Journal. https://doi.org/10.1086/158460
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