Radial gradients and metallicities in the galactic disk

Details Radial gradients and metallicities in the galactic disk Radial gradients and metallicities in the galactic disk

2000-12-08

arxiv.org/abs/astro-ph/0012179v1

Astronomy and Astrophysics

Astrophysics

8 pages, 2 postscript (EPS) figures, TEX, uses psfig.sty, Ionized Gaseous Nebulae, to be published in Revista Mex. Astron. Ast

Scientific paper

Radial O/H abundance gradients derived from HII regions, hot stars and planetary nebulae are combined with [Fe/H] gradients from open cluster stars in order to derive an independent [O/Fe] x [Fe/H] relation for the galactic disk. A comparison of the obtained relation with recent observational data and theoretical models suggests that the [O/Fe] ratio is not higher than [O/Fe] ~ 0.4, at least within the metallicity range of the considered samples.

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