Free access article

A&A 454, L127-L130 (2006)
DOI: 10.1051/0004-6361:20065516

Letter

[Ar III]/[O III] and [S III]/[O III]: well-behaved oxygen abundance indicators for HII regions and star forming galaxies

G. Stasinska

LUTH, Observatoire de Paris-Meudon, 5 place Jules Jansen, 92195 Meudon, France
    e-mail: grazyna.stasinska@obspm.fr

(Received 27 April 2006 / Accepted 6 June 2006 )

Abstract
We propose two statistical methods to derive oxygen abundances in HII regions and star forming galaxies and calibrate them with a sample of several hundred giant HII regions in spiral and blue compact galaxies as well as of galaxies from the Sloan Digital Sky Survey. We show the advantages of our new abundance indicators over previous ones.

Key words: galaxies: abundances -- galaxies: ISM -- ISM: abundances -- ISM: HII regions

© ESO 2006

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