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Possible Connection between Large-scale Structures

Published online by Cambridge University Press:  25 April 2016

H. Di Nella  and
G. Paturel
H. Di Nella
Affiliation:
Observatoire de Lyon, F69230 Saint-Genis Laval, Francedinella@adel.univ-lyonl.fr School of Physics, University of New South Wales, NSW 2052, Australia
G. Paturel
Affiliation:
Observatoire de Lyon, F69230 Saint-Genis Laval, Francedinella@adel.univ-lyonl.fr
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Abstract

From the Lyon-Meudon Extragalactic Database (LEDA) we constructed a sample of 27000 galaxies with radial velocities smaller than 15 000 kms−1. From this first sample we selected the 5683 largest galaxies, which constitute a sample complete up to the diameter limit D25 = 1·6′. This sub-sample has been used to search for the most populated plane. The result is that the plane defined by the pole (l = 52°; b= 16°) contains twice as many galaxies as would be found for randomly distributed galaxies. This plane is not far from the supergalactic plane. The distribution of galaxies in this plane has been studied by using the radial velocity as an estimate of the distance. An excess of galaxies appears at a distance of about 70 Mpc. We discuss the reality of this density enhancement which could result from selection effects.

Keywords

galaxiesredshifts — large scale structure of the Universe
Type
Extragalactic
Information
Publications of the Astronomical Society of Australia , Volume 12 , Issue 1 , April 1995 , pp. 26 - 30
Copyright
Copyright © Astronomical Society of Australia 1995

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