| Issue |
A&A
Volume 424, Number 2, September III 2004
|
|
|---|---|---|
| Page(s) | 465 - 476 | |
| Section | Extragalactic astronomy | |
| DOI | https://doi.org/10.1051/0004-6361:20047024 | |
| Published online | 23 August 2004 | |
The radial extinction profiles of late-type galaxies*
1
Carnegie Observatories, 813 Santa Barbara Street, Pasadena, 91101 California, USA e-mail: boissier@ociw.edu
2
Laboratoire d'Astrophysique de Marseille, Traverse du siphon, 13376 Marseille Cedex 12, France e-mail: [Alessandro.Boselli;Veronique.Buat;Jose.Donas;Bruno.Milliard]@oamp.fr
Received:
7
January
2004
Accepted:
13
May
2004
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.
Key words: galaxies: spiral / ultraviolet: galaxies / ISM: dust, extinction
© ESO, 2004
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