1987
DOI: 10.1086/114301
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Recent photometry of CG Cygni

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Cited by 10 publications
(11 citation statements)
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“…They concluded that the orbital period of the system appears to have lengthened and to be continuously changing since the late 1960s. Naftilan et al (1987) confirmed this finding and suggested a period change of 4.15 × 10 −6 s/day. Hall (1991) updated the O-C curve and suggested that the mean brightness outside eclipse and the orbital period vary with the same cycle length of about 50 yr, on the basis of multiple linear fits.…”
Section: Eclipse Timings and Period Studysupporting
confidence: 72%
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“…They concluded that the orbital period of the system appears to have lengthened and to be continuously changing since the late 1960s. Naftilan et al (1987) confirmed this finding and suggested a period change of 4.15 × 10 −6 s/day. Hall (1991) updated the O-C curve and suggested that the mean brightness outside eclipse and the orbital period vary with the same cycle length of about 50 yr, on the basis of multiple linear fits.…”
Section: Eclipse Timings and Period Studysupporting
confidence: 72%
“…These workers have shown that the light curve of CG Cyg changes over short and long time intervals. Naftilan et al (1987) found that the mean light level outside eclipse increased between 1964 and 1976, after which the brightening of the mean light level halted. Sowell et al (1987) confirmed this result, noting that the mean light level outside eclipse increased by 15% rather uniformly between 1964 and 1977.…”
Section: Introductionmentioning
confidence: 98%
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“…The observations since that time (Yu 1923;Milone et al 1979;Jassur 1980;Sowell et al 1987;Naftilan et al 1987;Bedford et al 1987;Dapergolas et al 1989aDapergolas et al , 1994Zeilik et al 1989Zeilik et al , 1991 …”
Section: Introductionmentioning
confidence: 99%