The code SED3FIT (Berta et al. 2013a) reproduces the SEDs of galaxies using a combination of three components: stellar emission; dust emission from star formation; and a possible dusty torus/AGN. The stellar and dust emission are linked by energy balance arguments: the amount of energy absorbed by dust at UV-optical wavelength is re-emitted at infrared wavelengths.
Originally inspired by MAGPHYS (da Cunha et al. 2008), this code was first designed, used and briefly described by Berta et al. (2013a). SED3FIT adopts a random sampling of the parameter space, thus allowing a quick evaluation of the best fit parameters. On the other hand, if a large number of model realization is chosen, the library exploration will be more detailed, nevertheless at the expenses of computation time.
SED3FIT has been successfully applied to local samples and to high redshift galaxies. Gruppioni et al. (2016) combined broadband SEDs and mid-IR spectra of local ULIRGS. Delvecchio et al. (2015, 2017) studied the incidence of AGNs in Herschel- and radio-galaxies. Baronchelli et al. (2016) and Marchetti et al. (2017) analyzed intermediate galaxies with AKARI and WISE photometry.
The SED3FIT package, including an extensive read-me documentation, can be retrieved on the COSMOS web.