Other
Scientific paper
Aug 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...239.1017t&link_type=abstract
Astrophysical Journal, Part 1, vol. 239, Aug. 1, 1980, p. 1017-1023. Research supported by the Northwestern University
Other
30
Binary Stars, Gravitational Waves, Stellar Evolution, Variable Stars, Angular Momentum, Dwarf Stars, Hydrogen, Novae, Stellar Mass Ejection
Scientific paper
Results are presented for several evolutionary sequences of close binary systems which resemble dwarf novae. The systems, containing white dwarfs and main-sequence companions, have masses less than 3.4 solar masses and periods less than 17 hours. The loss of angular momentum by gravitational radiation is included in the calculations. It is found that a system can be captured as a result of evolution dominated by gravitational radiation losses when the primary encounters its Roche lobe while near the main sequence. In such a case, the system evolves to even shorter periods, with the nuclear time scale of the primary increasing so that the latter is unable to exhaust hydrogen. Other sequences do not result in capture (1) when the primary is sufficiently evolved that it can exhaust hydrogen during mass exchange and (2) when a simple model for mass and angular momentum losses associated with nova outbursts from the accreting white dwarf is considered
Faulkner John
Flannery Brian P.
Taam Ronald E.
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