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Is the small-amplitude cepheid SZ Tau a possible overtone pulsator?

Andrievsky, S. M.; Kovtyukh, V. V.; Klochkova, V. G. +3 more

On the base of 8 high-resolution CCD spectra, obtained by the 6-m telescope of SAO RAS (Russia) and 4-m telescope of KPNO (USA), we have determined the mean values of atmospheric parameters for small-amplitude Cepheid SZ Tau. Since SZ Tau is a member of NGC 1647 open cluster and calibrating object for ``period - luminosity" relation, it is very im…