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The radial extinction profiles of late-type galaxies

S. Boissier·A. Boselli·V. Buat·J. Donas·B. Milliard
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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.

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S. Boissier, A. Boselli, V. Buat, J. Donas, B. Milliard. 2004-07-29. The radial extinction profiles of late-type galaxies. https://doi.org/10.1051/0004-6361%3A20047024

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