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Abundance gradients: tracing the chemical properties of the disk

Published online by Cambridge University Press:  21 October 2010

Roberto D.D. Costa  and
Walter J. Maciel
Roberto D.D. Costa
Affiliation:
Depto. de Astronomia, IAG/USP, Rua do Matão 1226, 05508-090, São Paulo/SP, Brazil email: roberto@astro.iag.usp.br, maciel@astro.iag.usp.br
Walter J. Maciel
Affiliation:
Depto. de Astronomia, IAG/USP, Rua do Matão 1226, 05508-090, São Paulo/SP, Brazil email: roberto@astro.iag.usp.br, maciel@astro.iag.usp.br
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Abstract

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Abundance gradients are key parameters to constrain the chemical evolution of the galactic disk. In this review recent determinations for the radial gradient are described, including its slope as derived from different objects such as planetary nebulae, HII regions, cepheids, or B stars, and for different elements. Inner and outer limits for the radial gradient, as well as its time evolution, both related to the chemical evolution of the Galaxy, are also described. The possible existence of azimuthal and vertical gradients is also discussed.

Keywords

Galaxy: abundancesGalaxy: diskGalaxy: evolution
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Highlights H15: Highlights of Astronomy , November 2009 , pp. 790
Copyright
Copyright © International Astronomical Union 2010

References

Costa, R. D. D. & Maciel, W. J. 2006, Proc. IAU Symp. 234, 243Google Scholar
Maciel, W. J., Lago, L. G., & Costa, R. D. D. 2006 A&A 453, 587Google Scholar
Rudolph, A. L., Fitch, M., Bell, G. R. et al. 2006, ApJS 162, 343CrossRefGoogle Scholar