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First Cosmic Shear Results from the...
Journal article

First Cosmic Shear Results from the Canada-France-Hawaii Telescope Wide Synoptic Legacy Survey**Based on observations obtained with MegaPrime equipped with MegaCam, a joint project of CFHT and CEA/DAPNIA, at the Canada-France-Hawaii Telescope (CFHT), which is operated by the National Research Council (NRC) of Canada, the Institut National des Science de l’Univers of the Centre National de la Recherche Scientifique (CNRS) of France, and the University of Hawaii. This work is based in part on data products produced at TERAPIX and the Canadian Astronomy Data Centre as part of the Canada-France-Hawaii Telescope Legacy Survey, a collaborative project of NRC and CNRS.

Abstract

We present the first measurements of the weak gravitational lensing signal induced by the large-scale mass distribution in the universe from data obtained as part of the ongoing Canada-France-Hawaii Telescope Legacy Survey (CFHTLS). The data used in this analysis are from the Wide Synoptic Survey, which aims to image ~170 deg2 in five filters. We have analyzed an effective area of ~22 deg2 (31 pointings) of i′ data spread over two of the three …

Authors

Hoekstra H; Mellier Y; van Waerbeke L; Semboloni E; Fu L; Hudson MJ; Parker LC; Tereno I; Benabed K

Journal

The Astrophysical Journal, Vol. 647, No. 1, pp. 116–127

Publisher

American Astronomical Society

Publication Date

August 10, 2006

DOI

10.1086/503249

ISSN

0004-637X