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Dynamics of double open clusters in the galactic field

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Abstract

Data from catalogs of multiple open star clusters (OSCs) have been used to compile a list of double and triple OSCs. Seven pairs of young OSCs with similar ages of their components have been selected from them. The dynamical evolution of the selected pairs of clusters in the Galactic gravitational field has been simulated numerically. The individual cluster masses have been estimated and the time dependences of the separations between the clusters have been constructed. The separations between the clusters are shown to exceed the tidal cluster radii. Various hypotheses of the origin of double OSCs are discussed: chance formations of pairs, formation within the same star complex, etc.

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Authors and Affiliations

  1. St. Petersburg State University, Universitetskii pr. 28, Peterhof, St. Petersburg, 198504, Russia

    A. V. Korkov & V. V. Orlov

Authors
  1. A. V. Korkov
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  2. V. V. Orlov
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Correspondence to A. V. Korkov.

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Original Russian Text © A.V. Korkov, V.V. Orlov, 2011, published in Pis’ma v Astronomicheskiĭ Zhurnal, 2011, Vol. 37, No. 4, pp. 274–280.

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Korkov, A.V., Orlov, V.V. Dynamics of double open clusters in the galactic field. Astron. Lett. 37, 248–253 (2011). https://doi.org/10.1134/S1063773711040049

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  • DOI: https://doi.org/10.1134/S1063773711040049

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