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RR Lyrae- and W Virginis-Type Stars
Published online by Cambridge University Press: 14 August 2015
Abstract
RR Lyrae stars: Normalized period-frequency diagrams are discussed, see Table I and Figure 1. Two ‘standard’ period-frequency relations were derived: one for − 1.17 and the other for − 1.72. The peculiarity of the diagrams for some clusters is pointed out. Various metallicity criteria are discussed together with other features of globular clusters. Some unexplained anomalies are found.
W Virginis stars: Properties of these stars are discussed. They too seem not to form a homogeneous group. The lack of accurate observations is stressed.
- Type
- Part 10 / RR Lyrae and W Virginis Stars
- Information
- Symposium - International Astronomical Union , Volume 67: Variable Stars and Stellar Evolution , 1975 , pp. 509 - 529
- Copyright
- Copyright © Reidel 1975