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Interactive Visualization of 3D Redshift Surveys with SDvision

Published online by Cambridge University Press:  05 December 2011

Daniel Pomarède
Affiliation:
CEA/IRFU, Saclay 91191 Gif-sur-Yvette, France email: daniel.pomarede@cea.fr, marguerite.pierre@cea.fr
Marguerite Pierre
Affiliation:
CEA/IRFU, Saclay 91191 Gif-sur-Yvette, France email: daniel.pomarede@cea.fr, marguerite.pierre@cea.fr
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Abstract

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The three-dimensional visualization of redshift surveys is a key player in the comprehension of the structuration of the cosmic web. The SDvision software package, intended primarily for the visualization of massive cosmological simulations, has been extended to provide an interactive visual representation of different classes of redshift surveys, with the objective to enable direct comparisons between the rare highest-density peaks traced by the clusters of galaxies found in the XMM-LSS Survey and the densely populated catalogues of galaxy photometric redshifts. We present the various possibilities offered by this tool in terms of filtering of the data, reconstruction of density fields, interactivity and visual rendering, including various techniques such as ray-casting, isosurfaces, slicing and texturing. This is illustrated using the C1 and C2 samples of the XMM-LSS Survey, and the publicly released COSMOS and CFHTLS photometric redshift Catalogs. Comparisons with published results are presented and discussed.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2011

References

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