[O iii]/[N ii] as an abundance indicator at high redshift

2004/01/08 by Max Pettini, B. E. J. Pagel, Bernard E J Pagel · 6 citations
Physics and Astronomy · #Astronomy and Astrophysical Research #Galaxies: Formation, Evolution, Phenomena #Stellar, planetary, and galactic studies #astro-ph

paper · pdf · doi:10.1111/j.1365-2966.2004.07591.x

published as Mon.Not.Roy.Astron.Soc.348:L59,2004 · 5 pages including 2 figures. Accepted for publication in Monthly Notices of the Royal Astronomical Society

arxiv created 2004/01/08 · openalex publication_date 2004/02/20 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/03

Abstract

Among ‘empirical’ methods of estimating oxygen abundances in extragalactic H ii regions, the use of the ratio of nebular lines of [O iii] and [N ii], first introduced by Alloin et al., is reappraised with modern calibration data and shown to have certain advantages over R23≡ ([O ii]+[O iii])/Hβ and N2 ≡[N ii]λ6583/Hα, particularly when applied to star-forming galaxies at high redshifts.

Citations

• Classification parameters for the emission-line spectra of extragalactic objects
• Using Strong Lines to Estimate Abundances in Extragalactic H ii Regions and Starburst Galaxies

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