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First results from HerMES on the evolution of the submillimetre luminosity function

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arxiv 1005.2189 v1 pith:NMUDHCNY submitted 2010-05-12 astro-ph.CO

First results from HerMES on the evolution of the submillimetre luminosity function

classification astro-ph.CO
keywords evolutionresultsevidencefunctionluminosityredshiftaroundbackground
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We have carried out two extremely deep surveys with SPIRE, one of the two cameras on Herschel, at 250 microns, close to the peak of the far-infrared background. We have used the results to investigate the evolution of the rest-frame 250-micron luminosity function out to z=2. We find evidence for strong evolution out to a redshift of around 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<1.4 in spiral galaxies.

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