Elisabete da Cunha, Stephane Charlot, Loretta Dunne, Dan Smith, Kate Rowlands
We present a simple, physically-motivated model to interpret consistently the
emission from galaxies at ultraviolet, optical and infrared wavelengths. We
combine this model with a Bayesian method to obtain robust statistical
constraints on key parameters describing the stellar content, star formation
activity and dust content of galaxies. Our model is now publicly available via
a user-friendly code package, MAGPHYS at www.iap.fr/magphys. We present an
application of this model to interpret a sample of ~1400 local (z<0.5) galaxies
from the H-ATLAS survey. We find that, for these galaxies, the diffuse
interstellar medium, powered mainly by stars older than 10 Myr, accounts for
about half the total infrared luminosity. We discuss the implications of this
result to the use of star formation rate indicators based on total infrared
luminosity.
View original:
http://arxiv.org/abs/1111.3961
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