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

页码：791 / 796

页数：6

共 25 条

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[2]

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[3]

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[4] A NEAR-INFRARED SPECTROSCOPIC STUDY OF THE LUMINOUS MERGER NGC-3256 .1. CONSTRAINTS ON THE INITIAL MASS FUNCTION OF THE STARBURST [J].