P. M. Kilmartin
Articles written in Journal of Astrophysics and Astronomy
Volume 10 Issue 2 June 1989 pp 139-146
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 the
Volume 10 Issue 2 June 1989 pp 151-155
SY Hyi is classified as a suspected R Coronae Borealis-type variable star. Photometric and spectroscopic observations of SY Hyi lead to the star’s reclassification as a semiregular variable of spectral type M5-6.
Volume 13 Issue 3 September 1992 pp 279-286
Photometric data, covering a span of two and a half years, have been analysed for the chromospherically active giant star HD 86005. It was found to undergo light variations and a photometric period of 89.0 ± 0.3 days was determined. Evidence suggests that these brightness variations are due to the rotation of unevenly distributed starspots.
Volume 41, 2020
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