Cataclysmic variable stars

Details Cataclysmic variable stars Cataclysmic variable stars

Feb 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984ap%26ss..99..127b&link_type=abstract

(International Astronomical Union, Colloquium on Double Stars, Physical Properties and Generic Relations, 80th, Bandung, Indones

Astronomy and Astrophysics

Astrophysics

6

Accretion Disks, Binary Stars, Stellar Evolution, Stellar Mass Ejection, Variable Stars, White Dwarf Stars, Dynamic Stability, Mass Transfer, Stellar Structure

Scientific paper

Theoretical models of cataclysmic variables, interacting binary systems comprising a red component and an accreting white dwarf or main-sequence star with a disk supported by angular momentum, are reviewed. Observational data on the outbursts of SS Cyg are summarized and analyzed, and the stability of stars in semidetached systems is discussed with reference to a simple analogy to a water-filled, elastically supported cylinder. A time-dependent disk-evolution model which accounts for the response of the disk to fluctuations in the mass-transfer rate is developed, and some numerical results are presented graphically. Disk instabilities are found to lead to irregular oscillations with periods of hours to days in local regions of the disk, perhaps like the rapid flickering observed during quiescent periods of cataclysmic variables.

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