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Phase Lag of Classical Cepheids and RR Lyrae Stars

Published online by Cambridge University Press:  12 April 2016

W. Ogloza ,
P. Moskalik  and
S. Kanbur
W. Ogloza
Affiliation:
Copernicus Astron. Center, ul. Bartycka 18, 00-716 Warsaw, Poland
P. Moskalik
Affiliation:
Copernicus Astron. Center, ul. Bartycka 18, 00-716 Warsaw, Poland
S. Kanbur
Affiliation:
Department of Physics & Astronomy, University of Massachusetts, Amherst, MA, USA

Abstract

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It is a well-known property of Cepheids and RR Lyrae variables that their maximum brightness approximately coincides with the maximum expansion velocity. A more detailed investigation (Carson & Stothers 1984; Simon 1984) has shown that the velocity curve is in fact slightly retarded with the respect to the light variations. In this report we discuss the trends in the observed phase lag for an extensive sample of classical Cepheids and RRab variables.

Type
Part 3. Cepheids, RR Lyrae Stars, Distance Scales
Information
International Astronomical Union Colloquium , Volume 176: The Impact of Large-Scale Surveys on Pulsating Star Research , 2000 , pp. 235 - 236
Copyright
Copyright © Astronomical Society of the Pacific 2000

References

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