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arXiv · 1308.5681

H-ATLAS: estimating redshifts of Herschel sources from sub-mm fluxes

E. A. Pearson·S. Eales·L. Dunne·J. Gonzalez Nuevo·S. Maddox·J. E. Aguirre·M. Baes·A. J. Baker·N. Bourne·C. M. Bradford·C. J. R. Clark·A. Cooray·A. Dariush·G. De Zotti·S. Dye·D. Frayer·H. L. Gomez·A. I. Harris·R. Hopwood·E. Ibar·R. J. Ivison·M. Jarvis·M. Krips·A. Lapi·R. E. Lupu·M. J. Michałowski·M. Rosenman·D. Scott·E. Valiante·I. Valtchanov·P. van der Werf·J. D. Vieira
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Abstract

Upon its completion the Herschel ATLAS (H-ATLAS) will be the largest submillimetre survey to date, detecting close to half-a-million sources. It will only be possible to measure spectroscopic redshifts for a small fraction of these sources. However, if the rest-frame spectral energy distribution (SED) of a typical H-ATLAS source is known, this SED and the observed Herschel fluxes can be used to estimate the redshifts of the H-ATLAS sources without spectroscopic redshifts. In this paper, we use a subset of 40 H-ATLAS sources with previously measured redshifts in the range 0.5 1 we estimate that the rms of Delta z/(1+z) = 0.12. We have used this template to estimate the redshift distribution for the sources detected in the H-ATLAS equatorial fields, finding a bimodal distribution with a mean redshift of 1.2, 1.9 and 2.5 for 250, 350 and 500 um selected sources respectively. \end{abstract}

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E. A. Pearson, S. Eales, L. Dunne, J. Gonzalez Nuevo, S. Maddox, J. E. Aguirre, M. Baes, A. J. Baker, N. Bourne, C. M. Bradford, C. J. R. Clark, A. Cooray, A. Dariush, G. De Zotti, S. Dye, D. Frayer, H. L. Gomez, A. I. Harris, R. Hopwood, E. Ibar, R. J. Ivison, M. Jarvis, M. Krips, A. Lapi, R. E. Lupu, M. J. Michałowski, M. Rosenman, D. Scott, E. Valiante, I. Valtchanov, P. van der Werf, J. D. Vieira. 2013-08-26. H-ATLAS: estimating redshifts of Herschel sources from sub-mm fluxes. https://doi.org/10.1093/mnras%2Fstt1369

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