Velocity anti-correlation of diametrically opposed galaxy satellites in the low-redshift Universe

Neil G. Ibata (), Rodrigo A. Ibata, Benoit Famaey and Geraint F. Lewis
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Neil G. Ibata: Lycée international des Pontonniers, 1 rue des Pontonniers, F-67000 Strasbourg, France
Rodrigo A. Ibata: Observatoire astronomique de Strasbourg, Université de Strasbourg, CNRS, UMR 7550, 11 rue de l’Université, F-67000 Strasbourg, France
Benoit Famaey: Observatoire astronomique de Strasbourg, Université de Strasbourg, CNRS, UMR 7550, 11 rue de l’Université, F-67000 Strasbourg, France
Geraint F. Lewis: Sydney Institute for Astronomy, School of Physics, A28, The University of Sydney, New South Wales 2006, Australia

Nature, 2014, vol. 511, issue 7511, 563-566

Abstract: Measurements of the velocities of pairs of diametrically opposed satellite galaxies of host galaxies in the local Universe show that satellite pairs out to a distance of 150 kiloparsecs from their hosts are anti-correlated in their velocities and that galaxies in the larger-scale environment are strongly clumped along the axis joining the inner satellite pair.

Date: 2014
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DOI: 10.1038/nature13481

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