Spectroscopy of outlying H II regions in spiral galaxies: Abundances and radial gradients

被引：413

作者：

van Zee, L

Salzer, JJ

Haynes, MP

O'Donoghue, AA

Balonek, TJ

机构：

[1] Natl Radio Astron Observ, Socorro, NM 87801 USA

[2] Wesleyan Univ, Dept Astron, Middletown, CT 06459 USA

[3] Cornell Univ, Ctr Radiophys & Space Res, Ithaca, NY 14853 USA

[4] Cornell Univ, Natl Astron & Ionosphere Ctr, Ithaca, NY 14853 USA

[5] St Lawrence Univ, Dept Phys, Canton, NY 13617 USA

来源：

ASTRONOMICAL JOURNAL | 1998年 / 116卷 / 06期

关键词：

galaxies : abundances; galaxies : ISM; galaxies : spiral;

D O I：

10.1086/300647

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the results of low-dispersion optical spectroscopy of 186 H II regions spanning a range of radius in 13 spiral galaxies. Abundances for several elements (oxygen, nitrogen, neon, sulfur, and argon) were determined for 185 of the H II regions. As expected, low metallicities were found for the outlying H II regions of these spiral galaxies. Radial abundance gradients were derived for the II primary galaxies; similar to results for other spiral galaxies, the derived abundance gradients are typically -0.04 to -0.07 dex kpc(-1).

引用

页码：2805 / 2833

页数：29

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