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Dark halos of wide triple systems of galaxies

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Abstract

A new class of metagalactic system—wide triple systems of galaxies with characteristic scale lengths of ∼1 Mpc—are analyzed. Dynamical models of such systems are constructed, and the amount of dark mass contained in them is estimated. In principle, kinematic data for wide triplets allow two types of models: with individual galactic halos and with a common halo for the entire system. A choice between the two models can be made based on X-ray observations of these systems, which can determine whether clustering and hierarchical evolution continues on scales of ∼1 Mpc or whether systems with such scale lengths are in a state of virial quasi-equilibrium.

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Authors and Affiliations

  1. Sternberg Astronomical Institute, Universitetskii pr. 13, Moscow, 119899, Russia

    V. P. Dolgachev, L. M. Domozhilova & A. D. Chernin

  2. Tuorla Observatory, Turku, Finland

    A. D. Chernin

Authors
  1. V. P. Dolgachev
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  2. L. M. Domozhilova
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  3. A. D. Chernin
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__________

Translated from Astronomicheski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Zhurnal, Vol. 79, No. 4, 2002, pp. 291–299.

Original Russian Text Copyright © 2002 by Dolgachev, Domozhilova, Chernin.

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Dolgachev, V.P., Domozhilova, L.M. & Chernin, A.D. Dark halos of wide triple systems of galaxies. Astron. Rep. 46, 259–266 (2002). https://doi.org/10.1134/1.1471392

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  • DOI: https://doi.org/10.1134/1.1471392

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