High dispersion spectroscopic observations of HD 153919 (3U 1700-37)

A spectrogram of HD 153919 taken in June 1975 at phase phi = 0.79 shows the following interesting features when compared to previously published line profiles: (1) increased central absorption or more extended blue wings for He II lambda 5411 A and lambda 4541 A; (2) a change in the P Cygni profile of H beta; (3) a change in the relative intensities of N III and C III in the emission complex lambda lambda 4630-4650 A; and (4) a previously unreported emission feature near lambda 5300 A. These observations indicate the presence of a variable stellar wind from the primary, changes in the emission measure of the line-forming region in the primary, and possible spectroscopic signatures of features in the extended expanding atmosphere of the primary or the wake of the secondary.