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

2); 2) ((1) NAOC; B. Zhang (1; China); China; (2) Department of Physics; Hebei Normal University; S. Y. Yin (1; Y. C. Liang (1)

arxiv: astro-ph/0701234 · v1 · submitted 2007-01-09 · 🌌 astro-ph

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

S. Y. Yin (1 , 2) , Y. C. Liang (1) , B. Zhang (1 , 2) ((1) NAOC , China; (2) Department of Physics , Hebei Normal University , China) This is my paper

classification 🌌 astro-ph

keywords methodr23-pabundancesderivedestimatesgalaxieslowermetallicity

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

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