New times of minimum and a period study for GO Cygni

New times of minimum and a period study for GO Cygni

Times of minimum derived from photometry obtained in 1963, 1967, 1978, and 1979 are presented. With these and previously published times, the period is studied. A constant period increase (quadratic ephemeris) represents most of the times but there was a period decrease in 1934 and possibly in 1984....

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Veröffentlicht in:Journal of astrophysics and astronomy 1990-09, Vol.11 (3), p.271-275
Hauptverfasser: Hall, Douglas S., Louth, Howard
Format: Artikel
Sprache:eng
Schlagworte:
Astrophysics
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Zusammenfassung:Times of minimum derived from photometry obtained in 1963, 1967, 1978, and 1979 are presented. With these and previously published times, the period is studied. A constant period increase (quadratic ephemeris) represents most of the times but there was a period decrease in 1934 and possibly in 1984. A 50-year magnetic cycle is discussed.
ISSN:0250-6335
0973-7758
DOI:10.1007/BF02709276