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2012MNRAS.426.3369J - Mon. Not. R. Astron. Soc., 426, 3369-3384 (2012/November-2)
A weak lensing mass reconstruction of the large-scale filament feeding the massive galaxy cluster MACS J0717.5+3745.
JAUZAC M., JULLO E., KNEIB J.-P., EBELING H., LEAUTHAUD A., MA C.-J., LIMOUSIN M., MASSEY R. and RICHARD J.
Abstract (from CDS):
Our analysis is based on a mosaic of 18 multipassband images obtained with the Advanced Camera for Surveys aboard the Hubble Space Telescope, covering an area of ∼ 10 x 20arcmin2. We use a weak lensing pipeline developed for the Cosmic Evolution Survey, modified for the analysis of galaxy clusters, to produce a weak lensing catalogue. A mass map is then computed by applying a weak gravitational lensing multiscale reconstruction technique designed to describe irregular mass distributions such as the one investigated here. We test the resulting mass map by comparing the mass distribution inferred for the cluster core with the one derived from strong lensing constraints and find excellent agreement.
Our analysis detects the MACSJ0717.5+3745 filament within the 3σ detection contour of the lensing mass reconstruction, and underlines the importance of filaments for theoretical and numerical models of the mass distribution in the cosmic web. We measure the filament's projected length as ∼ 4.5
Abstract Copyright: © 2012 The Authors Monthly Notices of the Royal Astronomical Society © 2012 RAS
Journal keyword(s): gravitational lensing: weak - galaxies: clusters: individual: MACSJ0717.5+3745 - cosmology: observations - large-scale structure of Universe
Nomenclature: Fig. 7, Paragr. 5.1: [JJK2012] JHHMMSS.sss+DDMMSS.ss N=2.
CDS comments: MACS J0717.5+3749 (abstract & Fig.8) is a misprint for MACS J0717.5+3745.
Simbad objects: 9
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