Eclipse line profiles in cataclysmic variables - Evidence for absence of accretion disks

Details Eclipse line profiles in cataclysmic variables - Evidence for absence of accretion disks Eclipse line profiles in cataclysmic variables - Evidence for absence of accretion disks

Jun 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989aj.....97.1752w&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 97, June 1989, p. 1752-1758.

Astronomy and Astrophysics

Astronomy

58

Accretion Disks, Cataclysmic Variables, Eclipsing Binary Stars, Line Spectra, Emission Spectra, H Beta Line, Novae, Stellar Magnetic Fields, White Dwarf Stars

Scientific paper

Emission-line profiles of several cataclysmic variables have been observed through eclipse, and they do not show strong evidence for the rotational signature that is characteristic of an accretion disk. The lines appear to be formed in material that has some rotation with respect to the white dwarf, but that also has a substantial velocity directed radially with respect to the degenerate dwarf. The data are suggestive that the emission lines of many novae and novalike variables may not originate in disks, but in rotating polar accretion columns, and that the existence of a strong magnetic field may be an important parameter for the nova phenomenon.

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