Abstract
The age-metallicity relation (AMR) from the Old Open Clusters population (Carraro & Chiosi, 1994; Friel & Janes, 1993) is compared with the disc stellar populations obtained from a recently developed model of the Milky Way by Ng 1994. A picture for the chemical evolution of the disc is presented in which the presence of a newly discovered Bar population (t = 8-9 Gyr, Z = 0.005–0.030) is taken into account. We suggest that the past history of the Galactic Disc has been significantly influenced by infall of metal poor gas from the halo and accretion events. The results are shown in Fig. 1.
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Bibliography
Carraro, G. & Chiosi, C. 1994, Astr. & Astrophys. 287, 761.
Friel, E. D. & Janes, K. A. 1993, Astr. & Astrophys. 267, 75.
Ng, Y. K. 1994, PhD. Thesis, Leiden Observatory, the Netherlands.
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© 1996 Springer Science+Business Media Dordrecht
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Carraro, G., Ng, Y.K. (1996). Age-Metallicity Relation: Comparison of Open Clusters’ Data with Stellar Populations. In: Bender, R., Davies, R.L. (eds) New Light on Galaxy Evolution. International Astronomical Union / Union Astronomique Internationale, vol 171. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-0229-9_63
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DOI: https://doi.org/10.1007/978-94-009-0229-9_63
Publisher Name: Springer, Dordrecht
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