Radial gradients and metallicities in the galactic disk

2000/12/08 by W. J. Maciel, Walter J. Maciel, Maciel, W. J.
Physics and Astronomy · #Astrophysics (astro-ph) #FOS: Physical sciences #Stellar, planetary, and galactic studies #astro-ph

paper · pdf · doi:10.48550/arxiv.astro-ph/0012179

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/

arxiv created 2000/12/08 · openalex publication_date 2000/12/08 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

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.

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