Periodogram analysis of the light curves of 59 Aurgae

Abstract

The photoelectric V observations of the δ Scuti star 59 Aur have been analysed using the techniques of periodogram analysis and least-squares solutions. The fundamental mode is found to be more prominent than the first overtone in the pulsation of 59 Aur. The period ratio of the first overtone to the fundamental (i.e., P₁/ P₀ = 0.748) indicates tht the star pulsates in the radial mode. The abosolute magnitude, effective temperature and mass of the star are derived to be 1m.22, 7300 K and 2m.0 M☉, respectively. No variations exceeding 0m01 about the mean values of B - V and U - B colours have been found during a pulsation cycle.