Abbott, T.M.C.; Shafter, A.W.; Wood, J.H.; Tomaney, A.B. and Haswell, Carole
DO Leonis - a new eclipsing cataclysmic variable.
Publications of the Astronomical Society of the Pacific, 102 pp. 558–564.
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Photometric and spectroscopic observations of DO Leo have been obtained using the McDonald Observatory high-speed CCD photometer and a conventional two-channel photoelectric photometer. The data reveal eclipses that are approximately 1.5 m deep. A total of nine eclipses were observed in February and March 1988 and in April 1989. These data were used to establish an orbital period of 0.2345147(2) d. A low-resolution optical spectrum reveals significant He II 4686 emission in addition to the characteristic Balmer and He I emission lines.
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