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New times of minimum and a period study for GO CygniTimes 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.
Document ID
19910025867
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Hall, Douglas S. (Tennessee State University Nashville, United States)
Louth, Howard (Tennessee State Univ. Nashville, TN, United States)
Date Acquired
August 14, 2013
Publication Date
September 1, 1990
Publication Information
Publication: Journal of Astrophysics and Astronomy
Volume: 11
ISSN: 0250-6335
Subject Category
Astrophysics
Accession Number
91A10490
Funding Number(s)
CONTRACT_GRANT: NAG8-111
Distribution Limits
Public
Copyright
Other

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