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Chemically Peculiar Stars in Clusters: Upper and Lower Age Limits of CP Stars

Published online by Cambridge University Press:  12 April 2016

P. North
P. North*
Affiliation:
Institut d’astronomie de l’Université de Lausanne, CH-1290 Chavannesdes-Bois, Switzerland

Abstract

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The evolutionary state of CP Stars is defined using members of open clusters. It is confirmed that all CP stars belong to the main sequence, if the case of Horizontal-Branch Stars is omitted. The frequency of CP Stars as a function of age has been reconsidered: it is found constant for the CP2 stars, but significantly increasing with age for the CP1 (Am) stars.

Type
VII. Photometric Variability and Evolutionary Status
Information
International Astronomical Union Colloquium , Volume 138: Peculiar versus Normal Phenomena in A-Type and Related Stars , 1993 , pp. 577 - 591
Copyright
Copyright © Astronomical Society of the Pacific 1993

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