Ultraviolet lines and gas composition in NGC 1068

被引：12

作者：

Netzer, H ^{[1
]}

机构：

[1] TEL AVIV UNIV,WISE OBSERV,IL-69978 TEL AVIV,ISRAEL

来源：

ASTROPHYSICS AND SPACE SCIENCE | 1997年 / 248卷 / 1-2期

关键词：

D O I：

10.1023/A:1000509024526

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Recent ultraviolet and X-ray observations suggest that the Fe/O ratio in the NLR gas in NGC 1068 is abnormally high. The X-ray analysis; which is presented elsewhere, suggests a large Fe/H and the data shown and discussed here, in particular the extremely weak O III] lambda 1663 line, argue for small O/N and O/C. Models to support this claim are shown and discussed. They include improved reddening estimates, dusty and dust-free calculations, and abnormal abundances. The anomalous composition makes NGC 1068 unique among Seyfert galaxies and an unusual laboratory for investigating metal enrichment and depletion.

引用

页码：127 / 134

页数：8

共 15 条

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[2]

COOKE AJ, 1997, UNPUB APJ

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