Abstract
We present the result of UBV photometry and narrow-band photoelectric photometry of 44 i Boo made in January 1980 and March 1982, and we analysed the change in the orbital period of the binary over the past 65 years. We think that the fluctuations in the light curve are related to surface activities (cool and hot spots) on the stars and gas motion between the two stars, that the slowly-changing term in the orbital period is due to the light-time effect, while sudden changes in the period are related to mass ejection and eruptions on the stars.
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