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Long-term waves on Cepheid pulsation period trends |
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| Authors: | L N Berdnikov V V Ignatova John A R Caldwell C Koen |
| Institution: | a Sternberg Astronomical Institute, Moscow, Russia b Astronomical Institute, Tashkent, Uzbekistan c Tashkent University, Tashkent, Uzbekistan d S. A. Astronomical Observatory, Cape Town, South Africa |
| Abstract: | The secular evolution of the pulsation period of δ Cephei, η Aquilae, and ζ Geminorum during a cumulative total of 577 years suggests wave-like departures about the smooth time trends. |
| Keywords: | Cepheids |
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