Cluster pairs in the Small Magellanic Cloud

Details Cluster pairs in the Small Magellanic Cloud Cluster pairs in the Small Magellanic Cloud

Apr 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...230...11h&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 230, no. 1, April 1990, p. 11-15. Research supported by the University of Edin

Astronomy and Astrophysics

Astronomy

27

Galactic Clusters, Magellanic Clouds, Spatial Distribution, Star Clusters, Astronomical Catalogs, Galactic Evolution, Irregular Galaxies, Sky Surveys (Astronomy)

Scientific paper

The cluster system of the SMC has been surveyed with the aim of identifying close pairs of clusters. It is found that the number of existing close cluster pairs is significantly (at the 3.5 sigma level) larger than the expected number of such pairs due to the chance line-up of single clusters, implying that some of these pairs are physically associated. Comparison with the LMC cluster system shows that the ratio of pairs is similar to the ratio of single clusters in the two galaxies. These results, combined with the earlier results for the LMC, indicate the tendency of clusters to form in pairs, or possibly in groups, at least in the case of irregular galaxies, the probability that the observed number of pairs having formed due to tidal capture being small.

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