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HYDROGEN-LINE EMISSION IN THE SPECTRUM OF U CEPHEI
A. H. BATTEN and P. G. LASKARIDES
Publications of the Astronomical Society of the Pacific
Vol. 81, No. 482 (October 1969), pp. 677-684
Published by: Astronomical Society of the Pacific
Stable URL: http://www.jstor.org/stable/40676505
Page Count: 8
You can always find the topics here!Topics: Emission spectra, Line spectra, Hydrogen, Eclipses, Spectroscopic binary stars, Stellar spectra, Stellar classification, Visible spectrum, Spectrograms, Wavelengths
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Although all attempts to observe Ha emission in the spectrum of the eclipsing binary U Cephei during eclipse have so far failed, doubling of the hydrogen lines is observed in spectra obtained at quadratures. It is suggested that this is a partial filling of the absorption line by emission originating in the gaseous stream that flows from the cooler star to the hotter.
Publications of the Astronomical Society of the Pacific © 1969 The University of Chicago Press