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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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