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| - The O-type eclipsing binary SZ Camelopardalis revisited
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| - We analyse new spectra of the multiple system SZ Cambecause previous studies found different values of the primary radial velocity amplitude. The older solutions of light curves also have different ratios of secondary to primary luminosity as inferred from the observed equivalent widths of spectral lines. We therefore reanalyse the light curves of the eclipsing pair. Only the light curve derived by Wesselink has a solution that agrees with the observed equivalent width ratio. The resulting parameters of the binary are discussed. Masses of M1 = 16.6 and M2 = 11.9 M⊙, and radii R1 = 9.4 and R2 = 5.4 R⊙ are derived. We point out that radial velocities measured with the CCF method can be misleading when the method is applied to multiple systems with complex line blends. New radial velocities are also obtained for the visual component ADS 2984 A (HD 25639).
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