期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 427, 期 1, 页码 146-166出版社
WILEY-BLACKWELL
DOI: 10.1111/j.1365-2966.2012.21952.x
关键词
gravitational lensing: weak; cosmology: observations
资金
- Canadian Space Agency
- NSERC Research Tools and Instruments grant programme
- Canada Foundation for Innovation under Compute Canada
- Government of Ontario
- Ontario Research Fund - Research Excellence
- University of Toronto
- European Commissions Marie Curie Research Training Network DUEL [MRTN-CT-2006-036133]
- European Research Council under the EC [240185, 279396, 240672]
- Natural Sciences and Engineering Research Council of Canada
- Canadian Institute for Advanced Research
- Deutsche Forschungsgemeinschaft [ER 327/3-1]
- Transregional Collaborative Research Centre [TR 33]
- Marie Curie IOF [252760]
- CITA
- Marie Curie IRG grant [230924]
- Netherlands Organisation for Scientific Research [639.042.814]
- Royal Society
- CNRS/INSU (Institut National des Sciences de l'Univers)
- Programme National Galaxies et Cosmologie (PNCG)
- NSFC [11103012, 10878003]
- Innovation Program [12ZZ134]
- Chen Guang project
- SMEC [10CG46]
- STCSM [11290706600]
- NSF [AST-0444059-001]
- SAO [GO0-11147A]
- NWO
- Beecroft Institute for Particle Astrophysics and Cosmology
- Spanish Science Ministry [AYA2009-13936, CSD2007-00060]
- Generalitat de Catalunya [2009SGR1398]
- European Commissions Marie Curie Initial Training Network CosmoComp [PITN-GA-2009-238356]
- Science and Technology Facilities Council [ST/H002456/1] Funding Source: researchfish
- European Research Council (ERC) [240185] Funding Source: European Research Council (ERC)
- STFC [ST/H002456/1] Funding Source: UKRI
We present the CanadaFranceHawaii Telescope Lensing Survey (CFHTLenS) that accurately determines a weak gravitational lensing signal from the full 154 deg(2) of deep multicolour data obtained by the CFHT Legacy Survey. Weak gravitational lensing by large-scale structure is widely recognized as one of the most powerful but technically challenging probes of cosmology. We outline the CFHTLenS analysis pipeline, describing how and why every step of the chain from the raw pixel data to the lensing shear and photometric redshift measurement has been revised and improved compared to previous analyses of a subset of the same data. We present a novel method to identify data which contributes a non-negligible contamination to our sample and quantify the required level of calibration for the survey. Through a series of cosmology-insensitive tests we demonstrate the robustness of the resulting cosmic shear signal, presenting a science-ready shear and photometric redshift catalogue for future exploitation.
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