Abstract
Fourier decompositions are performed on the velocity curves of 11 classical Cepheids. The progression of curve shape with period is described in terms of combinations of the lower order Fourier coefficients. These quantities are shown to change with pulsation period in a manner similar to that already demonstrated for Cepheid light variations (Simon and Lee). We recommend further velocity observations, particularly in the period range 10 ~ P ~ 16 days. Subject headings: stars: Cepheids stars: pulsation
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