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KMID : 0380319900460000093
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Journal of Korean Research Institute for Better Living
1990 Volume.46 No. 0 p.93 ~ p.99
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On the Spectrum of CH Cygni Since 1984
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Abstract
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Spectroscopic behaviors for some spectral lines like He I, Hγ, Hδ, [Fe Ⅱ] of CH Cygni are described during the year 1977-1984. We have fitted the emission and absorption components of the Hγ and Hδ profiles, and the emission component of the FeⅡ profile with a two-three Gaussian profile characterized by broad, medium and narrow components. The brood widths of the Hγ and Hδ profiles on the continuum level seem as the result of a Doppler motion of the material originated the lines of He I and H I. And the several components in Balmer lines may be due to a shock wave driven by a bipolar flow roughly perpendicular to the line of sight. We believe that the flow is the result of an evolution stage of the accretion disk.
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