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Paper: First overtone mode pulsation of Cepheids
Volume: 11, Confrontation Between Stellar Pulsation and Evolution
Page: 209
Authors: Antonello, Elio; Poretti, Ennio; Reduzzi, Luca
Abstract: The Population I monoperiodic short-period Cepheids have been divided into two groups, C-a and C-b stars, on the basis of the Fourier parameters of their light curves. Their observed properties and evidence for double-mode Cepheids are considered, and it is concluded that C-b stars are firt-overtone mode pulsators whereas C-a stars are fundamental mode pulsators.
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