Period variations in spectroscopic binaries - SS Cygni and AE Aquarii

A. N. Feldt, G. Chincarini
1980 Publications of the Astronomical Society of the Pacific  
New orbital elements are computed for the variables SS Cyg and AE Aqr. Both systems are X-ray sources.
doi:10.1086/130705 fatcat:ti24b2u4pbanpdfrseuohtbm7m