SOLAR-TYPE CYCLES IN CLOSE BINARY-SYSTEMS

被引:71
作者
BIANCHINI, A
机构
[1] Osservatorio Astronomico, I-35122 Padova, Vicolo dell'Osservatorio
关键词
D O I
10.1086/115476
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Solar-type cycles in late-type secondary components of cataclysmic variables can produce cyclical variations of (i) the "quiescent" luminosity, (ii) the time intervals between consecutive outbursts of dwarfnova systems, and (iii) 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 ΔR/R in the range 0.6-3×10-4, 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 also suggested.
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页码:1941 / 1952
页数:12
相关论文
共 84 条
  • [1] ALLEN DA, 1978, MON NOT R ASTRON SOC, V182, P57
  • [2] Andronov I. L., 1982, ASTRON TSIRK, V1218, P3
  • [3] MV LYRAE - ENTERING THE PERIOD GAP
    ANDRONOV, IL
    FUHRMANN, B
    WENZEL, W
    [J]. ASTRONOMISCHE NACHRICHTEN, 1988, 309 (01) : 39 - 42
  • [4] [Anonymous], 1976, ASTROPHYSICAL QUANTI
  • [5] MAGNETIC ACTIVITY, TIDES, AND ORBITAL PERIOD CHANGES IN CLOSE BINARIES
    APPLEGATE, JH
    PATTERSON, J
    [J]. ASTROPHYSICAL JOURNAL, 1987, 322 (02) : L99 - L102
  • [6] BALIUNAS SL, 1988, FORMATION EVOLUTION
  • [7] BARBIERI C, 1977, ASTRON ASTROPHYS, V59, P419
  • [8] BARNARD EE, 1921, MNRAS, V81, P167
  • [9] PERIODICITIES AND DISKS IN DWARF NOVAE
    BATH, GT
    [J]. NATURE-PHYSICAL SCIENCE, 1973, 246 (154): : 84 - 87
  • [10] BATH GT, 1981, MON NOT R ASTRON SOC, V194, P964