Fig. 15.
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Average FWHM calculated from all Gaussian fits to CCFs of classical Cepheids observed by VELOCE as a function of dominant pulsation period. Stars with regular CCF profiles are plotted with gray circles. X Sgr, BG Cru, and LR TrA are plotted with black squares. Additional selected candidates showing humps and line splitting in CCFs are plotted with red points.
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