CF octantis,an RS CVn-type variable with a prominent activity cycle |
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| Authors: | K. R. Pollard J. B. Hearnshaw A. C. Gilmore P. M. Kilmartin |
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| Affiliation: | (1) Mt John University Observatory, Department of Physics, University of Canterbury, Christchurch, 1, New Zealand |
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| Abstract: | Photoelectric photometry has been obtained for CF Octantis on 39 nights. The object is a member of the RS CVn class and has a highly active chromosphere. A 20.15 ±0.06 d period has been found from theB andV magnitudes, which is interpreted as the rotational modulation of the light from a non-uniformly spotted star. The amplitude of this spot wave is observed to vary slowly between ΔV about 0m.l and 0m.3, which may be evidence for an activity cycle of 9 ±3 years. |
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| Keywords: | RS CVn stars chromospheric activity cycle CF Octantis |
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