The study about the revised R23-P method for metallicity estimates based on ~20,000 SDSS galaxies

Details The study about the revised R23-P method for metallicity estimates based on ~20,000 SDSS galaxies The study about the revised R23-P method for metallicity estimates based on ~20,000 SDSS galaxies

2007-01-09

arxiv.org/abs/astro-ph/0701234v1

Astronomy and Astrophysics

Astrophysics

Conference proceedings to appear in "The Central Engine of Active Galactic Nuclei", eds. L. C. Ho and J.-M. Wang (San Francisc

Scientific paper

We select ~20000 metal-rich star-forming galaxies from the SDSS-DR2 to study the R23-P method suggested by Pilyugin et al. for metallicity estimates. The oxygen abundances derived from their revised R23-P method are ~0.19 dex lower than those derived from the previous one, and ~0.60 dex lower than the Bayesian abundances obtained by the MPA/JHU group. These abundance discrepancies strongly correlate with the P parameter and weakly depend on the log(R23) parameter.

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