The radial extinction profiles of late-type galaxies

被引：72
作者：
Boissier, S
Boselli, A
Buat, V
Donas, J
Milliard, B
机构：
[1] Carnegie Observ, Pasadena, CA 91101 USA
[2] Lab Astrophys Marseille, F-13376 Marseille 12, France
来源：
ASTRONOMY & ASTROPHYSICS | 2004年 / 424卷 / 02期
关键词：
galaxies : spiral; ultraviolet : galaxies; ISM; dust; extinction;
D O I：
10.1051/0004-6361:20047024
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We have used UV (FOCA) and FIR (IRAS) images of six nearby late type galaxies to study the radial variation of the UV extinction (deduced from the FIR/UV ratio). We compare the UV extinction gradient with other extinction indicators (Balmer decrement) and search for a relation between the extinction, the metallicity and the gas surface density among our galaxies. We detect in our small sample a clear relation between extinction and metallicity. These observed relations are used to calibrate an empirical recipe useful for extinction correction in the UV, visible and near-infrared images of late type galaxies.
引用
收藏
页码：465 / 476
页数：12
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