Abundance determinations in emission-line objects: The revised emission line chart

被引：2

作者：

Kingdon, JB

Williams, RE

机构：

[1] Space Telescope Science Institute, 3700 San Martin Drive, Baltimore

来源：

ASTRONOMICAL JOURNAL | 1997年 / 113卷 / 06期

关键词：

D O I：

10.1086/118429

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present here a revision of the Emission Line Chart (Williams, 1995 PASP, 107, 152) which is based upon an extensive grid of photoionization models covering a wide range of hydrogen densities (n(H)) and stellar temperatures (T*). The results of this grid are used to identify line ratios which are insensitive to conditions in the gas and which are therefore good for deriving abundances. In addition, we classify these ratios according to the region of (n(H), T*) parameter space in which they are most useful. (C) 1997 American Astronomical Society.

引用

页码：2193 / &

页数：5