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

Author

Listed:
  • 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)

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.

Suggested Citation

  • Neil G. Ibata & Rodrigo A. Ibata & Benoit Famaey & Geraint F. Lewis, 2014. "Velocity anti-correlation of diametrically opposed galaxy satellites in the low-redshift Universe," Nature, Nature, vol. 511(7511), pages 563-566, July.
    • Handle: RePEc:nat:nature:v:511:y:2014:i:7511:d:10.1038_nature13481
    DOI: 10.1038/nature13481
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