Discussion of the designation of multiple-star components leads to a conclusion that, apart from components, we need to designate systems and centers-of-mass. The hierarchy is coded then by simple links to parent. This system is adopted in the multiple star catalogue, now available on-line. A short review of multiple-star statistics is given: the frequency of different multiplicities in the field, periods of spectroscopic sub-systems, relative orbit orientation, empirical stability criterion, and period-period diagram with its possible connection to formation of multiple stars. © 2008 Springer-Verlag Berlin Heidelberg.
CITATION STYLE
Tokovinin, A. (2008). Multiple stars: Designation, catalogues, statistics. ESO Astrophysics Symposia. https://doi.org/10.1007/978-3-540-74745-1_5
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