On periodic variations in the spectrum of the BOe star X Persei associated with the X-ray source 3U 0352+30

At the Crimean Observatory, the spectroscopic observation of X Persei was started in November 1974. The spectrograms with disperions 30 and 36 A/mm in the regions Hα and at lambdalambda 4950-3650 A were obtained from November 1974 to December 1980; about 2000 days were covered by these observations. The search for the evidence for the periodicities of 581 day and for the 22 hr in the variations of the radial velocity was made using the homogeneous observations from November 1974 to March 1978. (Auth.)