The nature of near-infrared emission from spiral galaxies

被引：0
|
作者：
James, PA
Seigar, MS
机构：
[1] Liverpool John Moores Univ, Astrphys Res Inst, Birkenhead CH41 1LD, Merseyside, England
[2] Univ Ghent, Dept Math Phys & Astron, B-9000 Ghent, Belgium
来源：
ASTRONOMY & ASTROPHYSICS | 1999年 / 350卷 / 03期
关键词：
galaxies : individual : M 74; galaxies : individual :; NGC; 613; galaxies : individual : NGC 7741; galaxies : spiral; galaxies : stellar content;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present K-band spectroscopy for several regions of three nearby spiral galaxies, NGC 613, NGC 628 and NGC 7741. Analysis of the depth of the 2.293 mu m CO absorption feature in these spectra reveals that some regions have deep absorptions, indicative of recent star formation, while others have anomalously shallow absorptions. We interpret the latter as evidence for a significant but localised contribution to the 2.3 mu m light from hot dust with an effective temperature of similar to 1000 K, which could have a significant effect on the K-band morphologies of star-forming galaxies.
引用
收藏
页码：791 / 796
页数：6
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