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Groups of galaxies

  • I Observation and Description of Structures
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Morphological Cosmology

Part of the book series: Lecture Notes in Physics ((LNP,volume 332))

Abstract

The results of recent statistical analyses of extensive samples of galaxy groups are reviewed. Most of the groups appear to be unrelaxed systems which are far from virial equilibrium. With the introduction of a corresponding correction factor to standard virial mass estimates, the latest catalogues of groups point to M/L B ≈ 400 M ⊙/L ⊙ (H 0 = 100kms−1 Mpc−1 ), which corresponds to Ω ≈ 0.1 – 0.2. This value is roughly consistent with the value of Ω inferred from studies of rich clusters and superclusters.

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Authors and Affiliations

  1. Department of Astronomy, Trieste, Italy

    Giuliano Giuricin

Authors
  1. Giuliano Giuricin
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P. Flin H. W. Duerbeck

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© 1989 Springer-Verlag

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Giuricin, G. (1989). Groups of galaxies. In: Flin, P., Duerbeck, H.W. (eds) Morphological Cosmology. Lecture Notes in Physics, vol 332. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-51223-3_115

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  • DOI: https://doi.org/10.1007/3-540-51223-3_115

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  • Online ISBN: 978-3-540-46179-1

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