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Published online by Cambridge University Press: 14 August 2015
This paper describes preliminary results from a digital analysis of the Fourier transform spectroscopy of β Lyrae. The spectra are photometrically precise in the 4800–10200 Å range with a spectral resolution of 3.85/cm. The most remarkable spectral features are the emission strength of some neutral Helium and Hydrogen lines, and their vari ability with time. Other fainter emission lines disappear, now and then.