Photoelectric Balmer-Line Photometry. II. Observations of HR 9080 and Related Spectrum Variables

Photoelectric line-curve observations of HR 9080 show time variations of about 10 per cent in the effective equivalent widths of 11$, H'y, and Ho. Quasi-periods of about 35 mm are found. The oscillations become unrecognizable after several cycles. A similarity to the 5-mm oscillations of the Sun is noted. A brief discussion of Balmer-line behavior in fourteen other stars is given