HerMES: The submillimeter spectral energy distributions of Herschel/SPIRE-detected galaxies

摘要

We present colours of sources detected with the Herschel/SPIRE instrument in deep extragalactic surveys of the Lockman Hole, Spitzer-FLS, and GOODS-N fields in three photometric bands at250, 350 and 500m.We compare these with expectations from the literature and discussassociated uncertainties and biases in the SPIREdata. We identifya500mflux limited selection of sources from the HerMES point sourcecatalogue that appears free from neighbouring/blended sources in allthree SPIRE bands. We compare the colours with redshift tracks ofvarious contemporary models. Based on these spectral templates we showthat regions corresponding to specific population types and redshiftscan be identified better in colour-flux space. The redshift tracks aswell as the colour-flux plots imply a majority of detected objects withredshifts at 1