The radial extinction profiles of late-type galaxies
Astrophysics
2009-11-10 v1
Abstract
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.
Cite
@article{arxiv.astro-ph/0407617,
title = {The radial extinction profiles of late-type galaxies},
author = {S. Boissier and A. Boselli and V. Buat and J. Donas and B. Milliard},
journal= {arXiv preprint arXiv:astro-ph/0407617},
year = {2009}
}
Comments
17 pages, 13 figures (higher resolution images available on request). Accepted in A&A (in press)