Evolution of magnetic cataclysmic binaries

Details Evolution of magnetic cataclysmic binaries Evolution of magnetic cataclysmic binaries

Mar 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987ap%26ss.131..511l&link_type=abstract

(IAU, Colloquium on Cataclysmic Variables. Recent Multi-Frequency Observations and Theoretical Developments, 93rd, Bamberg, West

Astronomy and Astrophysics

Astrophysics

36

Binary Stars, Cataclysmic Variables, Dwarf Stars, Magnetic Stars, Stellar Evolution, Abundance, Angular Momentum, Stellar Models

Scientific paper

The authors study the magnetic cataclysmic binary evolution. They describe the results of recent calculations (Lamb and Melia, 1986) and identify four regimes: (1) When the magnetic moment μ1 ⪉ 1031G cm3, the magnetic field of the degenerate dwarf is unable to funnel the accretion flow; these systems are not DQ Her stars and may show little or no evidence of a magnetic field. (2) Systems with 1031G cm3 ⪉ μ1 ⪉ 1033G cm3 are always DQ Her stars. (3) Systems with 1033G cm3 ⪉ μ1 ⪉ 1035G cm3 are DQ Her stars which evolve into AM Her stars, assuming μ1 is constant throughout their evolution (an assumption which may not be valid). (4) Systems with 1035G cm3 ⪉ μ1 are always AM Her stars.

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