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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