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23 January 2025

» arxiv » astro-ph/0701231

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The dependence of some metallicity calibrations of strong-line ratios on nitrogen enrichment history
Y. C. Liang ; S. Y. Yin ;
Date:	9 Jan 2007
Abstract:	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.
Source:	arXiv, astro-ph/0701231
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