THE ORIGIN OF THE FAR-INFRARED LUMINOSITY FROM SPIRAL GALAXIES

被引：104

作者：

DEVEREUX, NA

YOUNG, JS

机构：

[1] FIVE COLL RADIO ASTRON OBSERV, ANN ARBOR, MA USA

[2] UNIV MASSACHUSETTS, DEPT PHYS & ASTRON, AMHERST, MA 01003 USA

来源：

ASTROPHYSICAL JOURNAL | 1990年 / 350卷 / 02期

关键词：

Galaxies: stellar content; Infrared: general;

D O I：

10.1086/185659

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The relationship between the far-infrared and Hα luminosity has been investigated for a sample of 124 spiral galaxies. After correcting the Hα luminosities for an average 1 mag of extinction and extrapolating the IRAS 40-120 μm luminosity to 1000 μm, we find that the mean ratio of Ha to far-infrared luminosity is comparable to that expected from H II regions powered by stars with masses >6 M⊙. This result constitutes strong evidence in support of the view that high-mass (>6 M⊙) O and B stars are responsible for both the Ha and far-infrared emission in spiral galaxies of high, ≥1 ×109 L⊙, far-infrared luminosity.

引用

页码：L25 / L28

页数：4

共 41 条

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