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Novel Aspects of Cepheid Metallicity

Published online by Cambridge University Press:  15 August 2009

M. Goupil ,
Z. Kolláth ,
N. Nardetto ,
P. Kervella  and
L. Szabados
L. Szabados*
Affiliation:
Konkoly Observatory of the Hungarian, Academy of Sciences, PO Box 67, 1525 Budapest XII, Hungary
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Abstract

It is shown that – in addition to the long-known effect of metallicity on luminosity – the abundance of heavy-elements has an influence on both the light-curve stability of anomalous Cepheids and the period ratio of double-mode Cepheids. Moreover, metallicity is an important controlling factor of the value of the pulsation amplitude of Cepheids.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 38: Nonlinear Pulsations and Hydrodynamics of Cepheids , 2009 , pp. 99 - 106
Copyright
© EAS, EDP Sciences, 2009

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