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Fig. 1.


Example SED fits for LTGs (T >  0.5). Top row: galaxies whose SEDs have a large band coverage (≥25 datapoints), bottom row: those with a worse coverage (≤17 datapoints). Galaxies on the left have fits with χ2 at the peak of its distribution (0.3 <  χ2 <  0.6), those on the right a worse fit with χ2 >  4. The blue lines show CIGALE’s best fit; both fabs Bayesian estimate (with uncertainty), used in the main text, and the estimate from best-fit parameters (i.e. the one describing the best fit itself) are reported. When available, we also show: in red, the MAGPHYS best fit (and Bayesian estimate of fabs); in purple, the piece-wise SED used for galaxies with very good data coverage (and the estimate of fabs by direct integration of it). For the alternative estimates, see Appendix A.

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