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The Influence of Rotation on Horizontal Branch Stars and on RR Lyrae Pulsational Properties
Published online by Cambridge University Press: 14 August 2015
Extract
The occurrence of rotation in Globular Cluster stars has been suggested (see e.g. Renzini 1977) as a mechanism producing the observed colour spread in actual Horizontal Branches. If this is the case, canonical results on evolutionary properties of HB stars have to be revisited in order to account for rotation-driven structural variations: faster Main Sequence rotators delay the He flash increasing the mass-size Mc of the He core at the flash and loosing a greater amount of mass during the Red Giant stage.
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- Session 6: Effect of Rotation and Magnetic Field in Stellar Evolution
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- Copyright © Reidel 1981