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A Search for Spectroscopic Binaries among Southern Cepheids
Published online by Cambridge University Press: 12 April 2016
Abstract
A discussion of radial velocities determined at the Radcliffe Observatory for 20 southern Cepheids and those found in the literature for another 20 stars lead to the conclusion that 15% of Cepheids are members of long period binary systems (1). The observational data were heterogeneous, few stars having been observed by a single observer or with the same instrument over a sufficient length of time to detect long period variations in the mean velocity.
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- IV. Duplicity and its Consequences among the Intrinsic Variable Stars
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