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EDP Sciences, Astronomy & Astrophysics, (529), p. A93, 2011

DOI: 10.1051/0004-6361/201015955

Hans Publishers, Astronomy & Astrophysics, 1(487), p. 55-61

DOI: 10.1051/0004-6361:200809731

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A weak-lensing analysis of the Abell 383 cluster

Journal article published in 2011 by Z. Huang, M. Radovich ORCID, A. Grado, E. Puddu, A. Romano, L. Limatola, L. Fu, F. Getman
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Weak lensing analysis is applied to a deep, one square degree r-band CFHT-Megacam image of the Abell 2163 field. The observed shear is fitted with Single Isothermal Sphere and Navarro-Frenk-White models to obtain the velocity dispersion and the mass, respectively; in addition, aperture densitometry is also used to provide a mass estimate at different distances from the cluster centre. The luminosity function is finally derived, allowing to estimate the mass/luminosity ratio. Previous weak lensing analyses performed at smaller scales produced somewhat contradictory results. The mass and velocity dispersion obtained in the present paper are compared and found to be in good agreement with the values computed by other authors from X-ray and spectroscopic data. ; Comment: 8 pages, 9 figures, Accepted for publication on Astronomy & Astrophysics, final version