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

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

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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+1.4-0.9 times higher than the local value.
Original languageEnglish
Article numberL10
JournalAstronomy and Astrophysics
Volume518
DOIs
Publication statusPublished - 2010

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