The Herschel-ATLAS: Evolution of the 250um luminosity function out to z=0.5

Details The Herschel-ATLAS: Evolution of the 250um luminosity function out to z=0.5 The Herschel-ATLAS: Evolution of the 250um luminosity function out to z=0.5

2010-05-13

arxiv.org/abs/1005.2411v2

Astron.Astrophys. 518 (2010) L10

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

Accepted for publication in A&A

Scientific paper

10.1051/0004-6361/201014614

We have determined the luminosity function of 250um-selected galaxies detected in the ~14 sq.deg science demonstration region of the Herschel-ATLAS project out to a redshift of z=0.5. Our findings very clearly show that the luminosity function evolves steadily out to this redshift. By selecting a sub-group of sources within a fixed luminosity interval where incompleteness effects are minimal, we have measured a smooth increase in the comoving 250um luminosity density out to z=0.2 where it is 3.6+1.4-0.9 times higher than the local value.

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