Spectroscopy of the X-ray cataclysmic binary IE 0643.0-1648

Details Spectroscopy of the X-ray cataclysmic binary IE 0643.0-1648 Spectroscopy of the X-ray cataclysmic binary IE 0643.0-1648

Dec 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981pasp...93..741h&link_type=abstract

Astronomical Society of the Pacific, Publications, vol. 93, Dec. 1981, p. 741-746.

Astronomy and Astrophysics

Astronomy

10

Binary Stars, Radial Velocity, Stellar Spectra, Variable Stars, White Dwarf Stars, X Ray Sources, Companion Stars, Line Spectra, Novae, Stellar Magnetic Fields, Stellar Mass Ejection

Scientific paper

Moderate (2 A) resolution spectroscopic data of the X-ray cataclysmic variable IE 0643.0-1648 reveal that it is a fairly normal CV with a binary period of either 0.22 or 0.18 day. The component stars are a white dwarf of 0.9-1.0 solar mass and a mass-losing companion of 0.4-0.5 solar mass at an inclination of 40-50 deg. Frequent dwarf nova outbursts make it difficult to study this source, since they mask phase-dependent changes in line and continuum intensities. No evidence was found for Zeeman absorptions, which would indicate a high magnetic field.

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