We present preliminary results on a study of the 2--850 micron SEDs of a
sample of 30 FIRBACK galaxies selected at 170 micron. These sources are
representative of the brightest ~10% of the Cosmic Infrared Background. They
are a mixture of mostly local (z<~0.3) starforming galaxies, and a tail of
ULIGs that extend up to z~1, and are likely to be a similar population to faint
SCUBA sources. We use archival Spitzer IRAC and MIPS data to extend the
spectral coverage to the mid-IR regime, resulting in an unprecended (for this
redshift range) census of their infrared SEDs. This allows us to study in far
greater detail this important population linking the near-IR stellar emission
with PAH and thermal dust emission. We do this using a Markov Chain Monte Carlo
method, which easily allows for the inclusion of ~6 free parameters, as well as
an estimate of parameter uncertainties and correlations.Comment: 5 pages, 3 figures. Proceeding for the conference "Starbursts: From
30 Doradus to Lyman Break Galaxies", held in Cambridge (UK) in September,
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