The Richness-Shape Relation of the 2dFGRS Groups

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dc.creatorPlionis, Manolis
dc.creatorBasilakos, Spyros
dc.date2004-02-26
dc.date.accessioned2026-07-07T02:12:24Z
dc.date.available2026-07-07T02:12:24Z
dc.descriptionWe estimate the group shape of the recently compiled Pecolation-Inferred Galaxy Group (2PIGG) catalogue. Using a set of integral equations we invert the projected distribution of group axial ratios and recover the corresponding intrinsic distribution under the assumption that groups are pure spheroids. In agreement with the analysis of the UZC-SSRS2 group sample (Plionis, Basilakos & Tovmassian 2004) we find that groups are extremely elongated prolate-like systems. We also find an interesting trend between shape and group richness with poorer groups being significantly flatter than richer ones.
dc.description4 pages, 5 figures, submitted to Astronomy and Astrophysics (A&A)
dc.identifierhttps://arxiv.org/abs/astro-ph/0402626
dc.identifierhttp://arxiv.org/abs/astro-ph/0402626
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/7440
dc.subjectAstrophysics
dc.titleThe Richness-Shape Relation of the 2dFGRS Groups
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