Evolution of Magnetic Cataclysmic Binaries
Abstract
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.
- Publication:
-
Astrophysics and Space Science
- Pub Date:
- March 1987
- DOI:
- 10.1007/BF00668136
- Bibcode:
- 1987Ap&SS.131..511L
- Keywords:
-
- Binary Stars;
- Cataclysmic Variables;
- Dwarf Stars;
- Magnetic Stars;
- Stellar Evolution;
- Abundance;
- Angular Momentum;
- Stellar Models;
- Astrophysics