Herschel-ATLAS: Evolution of the 250 μm luminosity function out to z = 0.5⋆

Author： Dye S. Dunne L. Eales S. Smith D. J. B. Amblard A. Auld R. Baes M. Baldry I. K. Bamford S. Blain A. W. Bonfield D. G. Bremer M. Burgarella D. Buttiglione S. Cameron E. Cava A. Clements D. L. Cooray A. Croom S. Dariush A. de Zotti G. Driver S. Dunlop J. S. Frayer D. Fritz J. Gardner Jonathan P. Gomez H. L. Gonzalez-Nuevo J. Herranz D. Hill D. Hopkins A. Ibar E. Ivison R. J. Jarvis M. J. Jones D. H. Kelvin L. Lagache G. Leeuw L. Liske J. Lopez-Caniego M. Loveday J. Maddox S. Michałowski M. J. Negrello M. Norberg P. Page M. J. Parkinson H. Pascale E. Peacock J. A. Pohlen M. Popescu C. Prescott M. Rigopoulou D. Robotham A. Rigby E. Rodighiero G. Samui S. Scott D. Serjeant S. Sharp R. Sibthorpe B. Temi P. Thompson M. A. Tuffs R. Valtchanov I. van der Werf P. P. van Kampen E. Verma A.

Publisher： Edp Sciences

E-ISSN： 1432-0746|518|issue|L10-L10

ISSN： 0004-6361

Source： Astronomy & Astrophysics, Vol.518, Iss.issue, 2010-07, pp. : L10-L10

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Abstract

We have determined the luminosity function of 250 μm-selected galaxies detected in the ~14 deg² 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 250 μm luminosity density out to z = 0.2 where it is 3.6_-0.9^+1.4 times higher than the local value.