The physical parameters of the preliminary determination of the multiple system HD 222326

Abstract

In this work we determine some parameters of the triple star HD 222326. The result is based on high-resolution spectra obtained at the coude echelle spectrograph of the 1.5 m Russian–Turkish telescope RTT150 (AZT22). We redetermined the spectral class of the whole system and found high-amplitude short-time (relative to the known orbital period) variability of its radial velocity. This could be explained by the presence of the fourth component. Its nature is also discussed.