Radial gradients and metallicities in the galactic disk
Astrophysics
2007-05-23 v1
Abstract
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.
Keywords
Cite
@article{arxiv.astro-ph/0012179,
title = {Radial gradients and metallicities in the galactic disk},
author = {W. J. Maciel},
journal= {arXiv preprint arXiv:astro-ph/0012179},
year = {2007}
}
Comments
8 pages, 2 postscript (EPS) figures, TEX, uses psfig.sty, Ionized Gaseous Nebulae, to be published in Revista Mex. Astron. Astrof. SC, also available at http://www.iagusp.usp.br/~maciel/