Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992pasp..104..663c&link_type=abstract
Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 104, no. 678, Aug. 1992, p. 663-677.
Astronomy and Astrophysics
Astronomy
49
Eclipsing Binary Stars, Star Clusters, Cataclysmic Variables, Stellar Orbits
Scientific paper
Some 80 eclipsing binaries that are components of multiple-star systems are considered. Orbits for the third components of these systems are determined for only a relatively small number of cases, and all of these that have been published to date are presented. Triple-star systems are by far the most common of these, but one system in five is a quadruple or higher-order system. Eclipsing binaries in compact star clusters such as SZ Camelopardalis and the two binaries in Trapezium, BM Ori, and V 1016 Ori are also considered. The physical and orbital properties of the multiple star systems are discussed in detail in cases where the data are fairly complete. In triple-star systems with eclipsing binaries the ratio of P2/P1 ranges from less than 10 (for Lambda Tauri) to more than 10 exp 7 in some cases. The questions of coplanarity of orbits and the membership of components in multiple-star systems are also examined.
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