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CFHTLenS: the Canada–France–Hawaii Telescope Lensing Survey

Catherine HeymansScottish Universities Physics AllianceLudovic Van WaerbekeDepartment of Physics and Astronomy; University of British Columbia; 6224 Agricultural Road; Vancouver; BC; V6T 1Z1; CanadaLance MillerThomas ErbenArgelander Institute for Astronomy; University of Bonn; Auf dem Hügel 71; 53121; Bonn; GermanyHendrik HildebrandtArgelander Institute for Astronomy, University of Bonn, Auf dem Hgel 71, 53121 Bonn, GermanyHenk HoekstraLeiden Observatory, Leiden University, Niels Bohrweg 2, 2333 CA Leiden, the NetherlandsThomas D. KitchingScottish Universities Physics AllianceYannick MellierSorbonne UniversitéPatrick SimonArgelander Institute for Astronomy; University of Bonn; Auf dem Hügel 71; 53121; Bonn; GermanyChristopher BonnettInstitut de Ciencies de l’Espai; CSIC/IEEC; F. de Ciencies, Torre C5 par-2; Barcelona; 08193; SpainJean CouponInstitute of Astronomy and Astrophysics; Academia Sinica; PO Box 23-141; Taipei 10617; TaiwanLiping FuKey Lab for Astrophysics; Shanghai Normal University; 100 Guilin Road; 200234; Shanghai; ChinaJoachim Harnois-DérapsMichael J. HudsonPerimeter Institute for Theoretical Physics, 31 Caroline Street North, Waterloo, ON N2L 1Y5, CanadaMartin KilbingerKoenraad KuijkenLeiden Observatory; Leiden University; Niels Bohrweg 2; 2333; CA Leiden; the NetherlandsBarnaby RoweTim SchrabbackElisabetta SemboloniLeiden Observatory; Leiden University; Niels Bohrweg 2; 2333; CA Leiden; the NetherlandsEdo van UitertLeiden Observatory, Leiden University, Niels Bohrweg 2, 2333 CA Leiden, the NetherlandsSanaz VafaeiDepartment of Physics and Astronomy; University of British Columbia; 6224 Agricultural Road; Vancouver; BC; V6T 1Z1; CanadaMalin VelanderLeiden Observatory, Leiden University, Niels Bohrweg 2, 2333 CA Leiden, the Netherlands

2012en

Ochiq kirishBronza

ABI

Annotatsiya

We present the Canada-France-Hawaii 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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Identifikatorlar

DOI: 10.1111/j.1365-2966.2012.21952.x

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