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Paper: Metal-Poor Spectroscopic Binaries
Volume: 318, Spectroscopically and Spatially Resolving the Components of Close Binary Stars
Page: 276
Authors: Latham, D.W.
Abstract: For many years it was thought that spectroscopic binaries were very rare among metal-poor stars, both in the field and in globular clusters. In this paper I review recent evidence that spectroscopic binaries are actually common among the metal-poor field stars, with only subtle differences from the characteristics of the spectroscopic binaries among sun-like stars in the solar neighborhood. One interesting exception is the field blue stragglers, which show a high binary frequency that can be explained as the result of stable mass transfer. Of special importance are metal-poor double-lined spectroscopic binaries and their application to the derivation of accurate masses for testing the stellar models and evolutionary tracks for metal-poor stars.
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