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- W1973399003 abstract "view Abstract Citations (82) References (32) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS A Connection between Long-Term Luminosity Variations and Orbital Period Changes in Chromospherically Active Binaries Hall, Douglas S. Abstract The eclipsing binary CG Cyg provides observational confirmation of three predictions made by Applegate's (1991) improvement on the theory that magnetic cycles cause the quasi-periodic orbital period changes in binaries containing a convective star. The mean brightness outside eclipse and the period vary with the same cycle length of about 50 yr. The light curve and O - C curve are in phase, with maximum light and period increase occurring in early 1980. The chromospherically active star becomes bluer in phase with the brightening. Because a period increase occurs at maximum brightness, the sense of the star's differential rotation is specified: outside rotating faster. Publication: The Astrophysical Journal Pub Date: October 1991 DOI: 10.1086/186179 Bibcode: 1991ApJ...380L..85H Keywords: Chromosphere; Eclipsing Binary Stars; Light Curve; Stellar Luminosity; Variable Stars; Magnetic Stars; Stellar Color; Stellar Rotation; Astrophysics; STARS: CHROMOSPHERES; STARS: ECLIPSING BINARIES; STARS: INDIVIDUAL CONSTELLATION NAME: CG CYGNI; STARS: MAGNETIC; STARS: ROTATION; STARS: VARIABLES full text sources ADS | data products SIMBAD (7)" @default.
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- W1973399003 date "1991-10-01" @default.
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- W1973399003 title "A connection between long-term luminosity variations and orbital period changes in chromospherically active binaries" @default.
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