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

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

2010-05-12

arxiv.org/abs/1005.2189v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

Astronomy and Astrophysics, Herschel Special Issue, in press as a Letter; 5 pages

Scientific paper

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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