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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



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ID: 225954.0, MPI für Astronomie / Publikationen_mpia
Mapping the 3D dark matter with weak lensing in COMBO-17
Authors:Taylor, A. N.; Bacon, D. J.; Gray, M. E.; Wolf, C.; Meisenheimer, K.; Dye, S.; Borch, A.; Kleinheinrich, M.; Kovacs, Z.; Wisotzki, L.
Date of Publication (YYYY-MM-DD):2004
Title of Journal:Monthly Notices of the Royal Astronomical Society
Volume:353
Start Page:1176
End Page:1196
Review Status:not specified
Audience:Not Specified
Abstract / Description:We present a three-dimensional (3D) lensing
analysis of the z= 0.16 supercluster A901/2,
resulting in a 3D map of the dark matter
distribution within a 3 ˆ
105[h-1 Mpc]3
volume. This map is generated from a combined
catalogue of 3D galaxy coordinates together with
shear estimates, using R-band imaging and
photometric redshifts from the COMBO-17 survey.
We perform a chi2 fit of isothermal
spheres to the tangential shear pattern around
each cluster as a function of redshift to
estimate the 3D positions and masses of the main
clusters in the supercluster from lensing alone.
Motivated by the appearance of a second cluster
behind A902 in galaxy number density, we also
fit a two-cluster model to A902.
Free Keywords:gravitation; gravitational lensing;
; cosmology: observations; dark matter;
; large-scale structure of Universe
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
External Affiliations:University of Edinburgh, Royal Observatory,
Blackford Hill, Edinburgh, EH9 3HJ), AB(Institute
for Astronomy, School ofPhysics, University of
Edinburgh, Royal Observatory, Blackford Hill,
Edinburgh, EH9 3HJ), AC(Institute for Astronomy,
School of Physics, University of Edinburgh, Royal
Observatory, Blackford Hill, Edinburgh, EH9 3HJ),
AD(Department of Physics, University of Oxford,
Keble Road, Oxford OX1 3RH),
AE(Max-Planck-Institut für Astronomie, Königstuhl
17, D-69117, Heidelberg, Germany),
AF(Astrophysics Group, Blackett Laboratory,
Imperial College, Prince Consort Road, London SW7
2BW), AG(Max-Planck-Institut für Astronomie,
Königstuhl 17, D-69117, Heidelberg, Germany),
AH(Max-Planck-Institut für Astronomie, Königstuhl
17, D-69117, Heidelberg, Germany),
AI(Max-Planck-Institut für Astronomie, Königstuhl
17, D-69117, Heidelberg, Germany),
AJ(Astrophysikalisches Institut Potsdam, An der
Sternwarte 16, D-14482 Potsdam, Germany)
Identifiers:URL:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bi... [ID No:1]
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