Irfu-10-394 |
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First results from HerMES on the evolution of the submillimetre luminosity function |
S. Eales et al. (H Aussel, D. Elbaz, S. Madden, P. Panuzzo) |
We have carried out two extremely deep surveys with SPIRE, one of the two cameras on Herschel, at 250 μm, close to the peak of the far-infrared background. We have used the results to investigate the evolution of the rest-frame 250-μm luminosity function out to z = 2. We find evidence for strong evolution out to z ≃ 1 but evidence for at most weak evolution beyond this redshift. Our results suggest that a significant part of the stars and metals in the universe today were formed at z preceq 1.4 in spiral galaxies. |