An empirical calibration of nebular abundances based on the sulphur emission lines

Abstract

We present an empirical calibration of nebular abundances based on the strong emission lines of [SII] and [SIII] in the red part of the spectrum through the definition of a sulphur abundance parameter S23. This calibration presents two important advantages against the commonly used one based on the optical oxygen lines: it remains single-valued up to abundances close to solar and is rather independent of the degree of ionization of the nebula.

10 pages, 8 figures. Accepted for publication in MNRAS

Cited by in corpus (64)

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