Статья

CFHTLenS: the Canada–France–Hawaii Telescope Lensing Survey – imaging data and catalogue products

T. ErbenArgelander Institute for Astronomy, University of Bonn, Auf dem Hgel 71, D-53121 Bonn, GermanyH. HildebrandtArgelander Institute for Astronomy, University of Bonn, Auf dem Hgel 71, D-53121 Bonn, GermanyL. MillerDepartment of Physics, Oxford University, Keble Road, Oxford OX1 3RH, UKLudovic Van WaerbekeDepartment of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, BC V6T 1Z1, CanadaCatherine HeymansScottish Universities Physics Alliance, Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UKHenk HoekstraDepartment of Physics and Astronomy, University of Victoria, Victoria, BC V8P 5C2, CanadaT. D. KitchingScottish Universities Physics Alliance, Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UKY. MellierInstitut d'Astrophysique de Paris, Universit Pierre et Marie Curie -Paris 6, 98 bis Boulevard Arago, F-75014 Paris, FranceJ. BenjaminDepartment of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, BC V6T 1Z1, CanadaCullen H. BlakeCentre for Astrophysics & Supercomputing, Swinburne University of Technology, PO Box 218, Hawthorn, VIC 3122, AustraliaC. BonnettInstitut de Ciencies de lEspai, CSIC/IEEC, F. de Ciencies, Torre C5 par-2, E-08193 Barcelona, SpainO. CordesArgelander Institute for Astronomy, University of Bonn, Auf dem Hgel 71, D-53121 Bonn, GermanyJ. CouponInstitute of Astronomy and Astrophysics, Academia Sinica, PO Box 23-141, Taipei 10617, TaiwanLiping FuKey Lab for Astrophysics, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, ChinaR. GavazziInstitut d'Astrophysique de Paris, Universit Pierre et Marie Curie -Paris 6, 98 bis Boulevard Arago, F-75014 Paris, FranceB. GillisDepartment of Physics and Astronomy, University of Waterloo, Waterloo, ON N2L 3G1, CanadaEmma GrocuttUniversity of EdinburghStephen GwynCanadian Astronomical Data Centre, Herzberg Institute of Astrophysics Victoria, BC V9E 2E7, CanadaK. HolhjemArgelander Institute for Astronomy, University of Bonn, Auf dem Hgel 71, D-53121 Bonn, GermanyMichael J. HudsonDepartment of Physics and Astronomy, University of Waterloo, Waterloo, ON N2L 3G1, CanadaM. KilbingerInstitut d'Astrophysique de Paris, Universit Pierre et Marie Curie – Paris 6, 98 bis Boulevard Arago, F-75014 Paris, FranceKonrad KuijkenLeiden Observatory, Leiden University, Niels Bohrweg 2, NL-2333 CA Leiden, the NetherlandsMartha MilkeraitisDepartment of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, BC V6T 1Z1, CanadaBarnaby RoweCalifornia Institute of Technology, 1200 E California Boulevard, Pasadena, CA 91125, USAT. SchrabbackLeiden Observatory, Leiden University, Niels Bohrweg 2, NL-2333 CA Leiden, the NetherlandsE. SemboloniLeiden Observatory, Leiden University, Niels Bohrweg 2, NL-2333 CA Leiden, the NetherlandsP. ŠimonArgelander Institute for Astronomy, University of Bonn, Auf dem Hgel 71, D-53121 Bonn, GermanyMerijn SmitLeiden Observatory, Leiden University, Niels Bohrweg 2, NL-2333 CA Leiden, the NetherlandsO. ToaderDepartment of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, BC V6T 1Z1, CanadaSanaz VafaeiDepartment of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, BC V6T 1Z1, CanadaEdo van UitertArgelander Institute for Astronomy, University of Bonn, Auf dem Hgel 71, D-53121 Bonn, GermanyM. VelanderDepartment of Physics, Oxford University, Keble Road, Oxford OX1 3RH, UK

2013en

ABI

Аннотация

We present data products from the Canada-France-Hawaii Telescope Lensing Survey (CFHTLenS). CFHTLenS is based on the Wide component of the Canada-France-Hawaii Telescope Legacy Survey (CFHTLS). It encompasses 154 deg 2 of deep, optical, high-quality, sub-arcsecond imaging data in the five optical filters u * g r i z . The scientific aims of the CFHTLenS team are weak gravitational lensing studies supported by photometric redshift estimates for the galaxies. This paper presents our data processing of the complete CFHTLenS data set. We were able to obtain a data set with very good image quality and high-quality astrometric and photometric calibration. Our external astrometric accuracy is between 60 and 70 mas with respect to Sloan Digital Sky Survey (SDSS) data, and the internal alignment in all filters is around 30 mas. Our average photometric calibration shows a dispersion of the order of 0.01-0.03 mag for g r i z and about 0.04 mag for u * with respect to SDSS sources down to i SDSS 21. We demonstrate in accompanying papers that our data meet necessary requirements to fully exploit the survey for weak gravitational lensing analyses in

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Идентификаторы

DOI: 10.1093/mnras/stt928

Цитирования и источники

Цитирований: 2Использованных источников: 0

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