NeIII/OII as an oxygen abundance indicator in the HII regions and HII galaxies

Abstract

To calibrate the relationship between Ne3O2 (Ne3O2 = log(\neiii$\lambda 3869$/\oii$\lambda 3727$)) and oxygen abundances, we present a sample of $\sim$3000 $\hii$ galaxies from the Sloan Digital Sky Survey (SDSS) data release four. They are associated with a sample from the literature intended to enlarge the oxygen abundance region. We calculated the electron temperatures ($T_e$) of 210 galaxies in the SDSS sample with the direct method, and $T_e$ of the other 2960 galaxies in SDSS sample calculated with an empirical method. Then, we use a linear least-square fitting to calibrate the Ne3O2 oxygen abundance indicator. It is found that the Ne3O2 estimator follows a linear relation with \zoh\ that holds for the whole abundance range covered by the sample, from approximately 7.0 to 9.0. The best linear relationship between the Ne3O2 and the oxygen abundance is calibrated. The dispersion between oxygen abundance and Ne3O2 index in the metal rich galaxies may come partly from the moderate depletion of oxygen onto grains. The $Ne3O2$ method has the virtue of being single-valued and not affected by internal reddening. As a result, the $Ne3O2$ method can be a good metallicity indicator in the \hii regions and \hii galaxies, especially in high-redshift galaxies.

7 pages, 6 figures. A&A accepted

References in corpus (6)

• Gas metallicity diagnostics in star-forming galaxies
• Empirical strong-line oxygen abundance calibrations from galaxies with electron temperature measurements
• The oxygen abundance calibrations and N/O abundance ratios of ~40,000 SDSS star-forming galaxies
• [ArIII]/[OIII] and [SIII]/[OIII]: well-behaved oxygen abundance indicators for HII regions and star forming galaxies
• Oxygen abundance variations in the system of the two blue compact dwarf galaxies SBS 0335-052E and SBS 0335-052W
• Oxygen abundance in the Sloan Digital Sky Survey

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