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

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. and Verma, A. (2010). Herschel-ATLAS: evolution of the 250 µm luminosity function out to z=0.5. Astronomy & Astrophysics, 518, article no. L10.

DOI: https://doi.org/10.1051/0004-6361/201014614


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.

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