Optical Variability of Pu-Vulpeculae = Nova like Kuwano's Object 1979 IN 1983

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

Results of photoelectric UBV observations of PU Vul made in March - December 1983 are presented. The star brightness in U, B, V did not show significant variations during the first half of the year. From July to October 1983 the UV flux has been increasing by ΔU ≈ 0m.5, that was followed by a ≈ 0m.15 drop to the end of the year. In the same time a small brightness decrease ΔV ≈ 0m.1 and appearance of a slight instability of B and V brightness, probably of a flare type, were observed.

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