W. J. Maciel -
Abstract #88
RADIAL GRADIENTS AND METALLICITIES IN THE GALACTIC DISK
W. J. Maciel
Ionized gaseous nebulae, Rev. Mexicana Astron. Astrof. S. Conf. 12, 207-212 (2002) 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.
