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

被引：82

作者：

Díaz, AI ^{[1
]}

Pérez-Montero, E ^{[1
]}

机构：

[1] Univ Autonoma Madrid, Dept Fis Teor, E-28049 Madrid, Spain

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2000年 / 312卷 / 01期

关键词：

ISM : abundances; ISM : general; HII regions; galaxies : abundances;

D O I：

10.1046/j.1365-8711.2000.03117.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present an empirical calibration of nebular abundances based on the strong emission lines of [S II] and [S III] in the red part of the spectrum through the definition of a sulphur abundance parameter S-23. 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 almost independent of the degree of ionization of the nebula.

引用

页码：130 / 138

页数：9

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