A Simple Model For Mid-Infrared Emission from Normal Galaxies

Details A Simple Model For Mid-Infrared Emission from Normal Galaxies A Simple Model For Mid-Infrared Emission from Normal Galaxies

2006-03-17

arxiv.org/abs/astro-ph/0603477v1

Astronomy and Astrophysics

Astrophysics

4 pages, 2 figures. To appear in the proceedings of "Infrared Diagnostics of Galaxy Evolution (Spitzer Conference)", 14-16th N

Scientific paper

We have combined up-to-date stellar population synthesis models, a simple radiative transfer approach, and a fully comprehensive dust model with the aim of developing a simple but quantitative way of interpreting the mid-infrared spectra of galaxies. We apply these models to the observed correlations of mid-infrared luminosities (at 8 and 24 micron) with the star-formation rate of normal galaxies and find that the observations are naturally reproduced by our models. We further find that the observed 24 micron correlation places a weak constraint on relative distribution of dust and stars.

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