Pulsation periods in the? Scuti star HR 1170

Abstract

All knownV data from the literature for the δ Scuti star HR 1170 have been reanalysed by using single-frequency Fourier and multiple-frequency least squares analysis. The calculated periods areP1=0.d09942 andP2=0.d08392. The second frequency has not been found before and gives better residuals and almost constant amplitudes for the individual data sets. The period ratio andQ values indicate that this star is not pulsating in pure radial modes.