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Paper: Orbital Analysis of Two Triple Systems in the Open Cluster NGC 2516
Volume: 435, Binaries – Key to Comprehension of the Universe
Page: 107
Authors: Veramendi, M. E.; González, J. F.
Abstract: We report the discovery of two hierarchical triple systems in the open cluster NGC 2516. Both systems are double-lined spectroscopic binaries whose center-of-mass velocity varies in a time scale of a few years. The system BDA 19 consists of an eccentric spectroscopic binary with a period of 8.7 days and a third body orbiting with a period of about 3300 days. The close pair in the triple BDA 2 has an orbital period of 11.2 days and contains a HgMn star.
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