CFHTLenS tomographic weak lensing: quantifying accurate redshift distributions

Authors :: Thomas D. Kitching
Henk Hoekstra
Fergus Simpson
Catherine Heymans
Yannick Mellier
Tim Schrabback
Barnaby Rowe
Martin Kilbinger
Konrad Kuijken
Thomas Erben
J. Benjamin
Joachim Harnois-Déraps
Lance Miller
Jean Coupon
Liping Fu
Ludovic Van Waerbeke
Hendrik Hildebrandt
Sanaz Vafaei
Malin Velander
Michael J. Hudson
E. Semboloni
Source :: Monthly Notices of the Royal Astronomical Society
Publication Year :: 2013
Publisher :: Royal Astronomical Society, 2013.
Abstract: The Canada-France-Hawaii Telescope Lensing Survey (CFHTLenS) comprises deep multi-colour (u*g'r'i'z') photometry spanning 154 square degrees, with accurate photometric redshifts and shape measurements. We demonstrate that the redshift probability distribution function summed over galaxies provides an accurate representation of the galaxy redshift distribution accounting for random and catastrophic errors for galaxies with best fitting photometric redshifts z_p < 1.3. We present cosmological constraints using tomographic weak gravitational lensing by large-scale structure. We use two broad redshift bins 0.5 < z_p<br />17 pages, 12 figures, submitted to MNRAS

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