Have we seen all the galaxies that comprise the cosmic infrared background at 250 μm ≤λ ≤ 500 μm?

The cosmic infrared background (CIB) provides a fundamental observational constraint on the star-formation history of galaxies over cosmic history. We estimate the contribution to the CIB from catalogued galaxies in the COSMOS field by using a novel map fitting technique on the \textit{Herschel} SPIRE maps. Prior galaxy positions are obtained using detections over a large range in wavelengths in the K_{\rm s}-3\,GHz range. Our method...