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Evolutionary Possibilities and Impossibilities for Solar Type Contact Binaries in NGC 188
Published online by Cambridge University Press: 12 April 2016
Abstract
We give a great number of arguments for the hypothesis that several epochs of star formation have taken place at different times in the old galactic cluster NGC 188.
From the last burst of star formation in this cluster, not more than a few times 108 years ago, 4 contact binaries are still now visible as W UMa stars. With the aid of a simplified probability calculation we argue that these 4 contact binaries are physically related and that the alignment of the orbital axes is not accidental.
- Type
- Part III: Evolutionary Processes in Close Binary Systems
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- Copyright © Reidel 1982