A detailed study of Cepheid photometric properties in the Walraven system

We have used the extensive set of photometric data in the VBLUW system (Pel, 1976) to perform a thorough statistical analysis of the physical properties of Cepheid variables, which can be inferred directly from these data. We have dealt with the problem of determining colour excesses and mean colours and temperatures; theoretical masses, radii and luminosities have been recalculated.