The dependence of some metallicity calibrations of strong-line ratios on nitrogen enrichment history

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

arxiv: astro-ph/0701231 · v1 · submitted 2007-01-09 · 🌌 astro-ph

The dependence of some metallicity calibrations of strong-line ratios on nitrogen enrichment history

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

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keywords abundancesaccuratebayesiandependencegalaxieshistoryn2-derivedratios

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We show the dependence of the Bayesian and the N2-derived oxygen abundances on the N-enrichment history of the star-forming galaxies. We select 531 metal-poor and ~20,000 metal-rich galaxies from the SDSS database for this study. Their "accurate" O/H abundances are obtained from Te and P-method, respectively. The discrepancies of the Bayesian and N2-derived abundances from these two "accurate" abundances show obvious correlations with log(N/O) abundance ratios.

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The dependence of some metallicity calibrations of strong-line ratios on nitrogen enrichment history

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