Early-type stars in the stellar associations Per OB1, Sco OB1, and Cyg OB1 by observations with space telescope Glazar

This paper presents results of observations at 1640 A carried out in September 1988 with the Soviet space telescope Glazar on the regions of stellar associations Per OB1, Sco OB1, and Cyg OB1. Thirty two photographs were obtained, on which 94 images of stars were identified and measured. In stellar associations Per OB1, Sco OB1, and Cyg OB1, 42, 22, and 30 hot stars brighter than 10 mag at 1640 A were detected, respectively. A comparison of Glazar measurements of stellar magnitudes with those available from TD-1 telescope measurements and from ANS measurements showed reasonably good agreement. (I.S.)