Top panel: in black the best model fit of the observed SED of HCG25a (a normal-LTG of T = 5) shown with red points. The blue line shows the unattenuated spectrum. The blue points correspond to the Herschel/PACS and SPIRE fluxes. Bottom panels: likelihood distributions of the stellar mass (M_star), SFR, sSFR, dust mass (M_dust), dust luminosity (L_IR), and temperature of the dust in the diffuse ISM (T_ISM), derived using the UV-to-MIPS 24 μm (in black) and after including the Herschel bands (in blue).