Year: 2004
Type: article
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.
Authors: Max Pettini, Bernard E. J. Pagel
Institution: University of Sussex
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2011654732