On the dynamics of mass transfer over an accretion disk

Details On the dynamics of mass transfer over an accretion disk On the dynamics of mass transfer over an accretion disk

May 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...340.1064l&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 340, May 15, 1989, p. 1064-1069, 1071, 1072.

Other

96

Accretion Disks, Dwarf Novae, Eclipsing Binary Stars, Mass Transfer, Doppler Effect, Emission Spectra, Stellar Orbits, Stellar Spectra, Tomography

Scientific paper

The vertical dynamics of a gas stream as it flows over a disk in a semidetached binary. For plausible parameters, the gas stream at several scale heights above the binary orbit plane is able to flow over the disk once it passes the disk edge. Relatively high, free-flowing gas collides with the disk near the stream's closest approach with the compact object. The resulting emission is identified with a feature found in the Doppler tomography of dwarf nova Z Cha. These results can also explain the origin of asymmetric emission lines in other dwarf novae and dips in low-mass X-ray sources.

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