Solar-type cycles in close binary systems

Abstract

view Abstract Citations (86) References (71) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Solar-Type Cycles in Close Binary Systems Bianchini, A. Abstract Solar-type cycles in late-type secondary components of cataclysmic variables can produce cyclical variations of the quiescent luminosity, the time intervals between consecutive outbursts of dwarf-nova systems, and the orbital period. Analysis of the long-term light curves of several types of close binary systems suggests cyclical variations of the mass-transfer rate which can be ascribed to fractional changes of the radii of the late-type secondaries by Delta R/R in the range 0.00006-0.0003, as expected for a typical solar cycle. The probability density function of the periods of the cycles discovered in both CVs and single main-sequence stars are peaked around 6 yr. The periods of the cycles do not seem to be affected by the rotation regime of the star. A possible correlation between these cycles and the recurrence times of recurrent novae is suggested. Publication: The Astronomical Journal Pub Date: June 1990 DOI: 10.1086/115476 Bibcode: 1990AJ.....99.1941B Keywords: Cataclysmic Variables; Solar Cycles; Astronomical Photometry; Light Curve; Main Sequence Stars; Novae; Probability Density Functions; Stellar Luminosity; X Ray Binaries; Astrophysics; STARS: DWARF NOVAE full text sources ADS | data products SIMBAD (21)