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The Spectrum of CH Cygni - a Search for Rapid Line Variations

Published online by Cambridge University Press:  12 April 2016

T. Tomov  and
D. Raikova
T. Tomov
Affiliation:
National Astronomical Observatory Rozhen, 4700 Smoljan, PB 136, Bulgaria
D. Raikova
Affiliation:
Department of Astronomy, Bulgarian Academy of Sciences, 1784 Sofia, blv. Lenin 72, Bulgaria

Extract

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The spectacular changes of CH Cyg spectrum during the last period of activity and the flickering in short wavelength light suggest the possibility of rapid line variations (Walker et al.,1969). In November 1982 a series of spectral observations has been accomplished at Rozhen Observatory to investigate the subject.

In that period the spectrum of CH Cyg is dominated by type A shell lines. They are supposed to originate in an accretion disk surrounding the hot star of the binary system. The flickering in the optical wavelengths is characteristic for CH Cyg during periods of activity. Evidently it is related with the mass transfer. The investigation of its origin and relations with the other observational characteristics of the star could elucidate the accretion mechanism in this system.

Type
Session 3. Physics of Individual Objects
Information
International Astronomical Union Colloquium , Volume 103: The Symbiotic Phenomenon , 1988 , pp. 227 - 228
Copyright
Copyright © Kluwer 1988

References

Chochol, D., Hric, L., Skopal, A. and Papousek, J., 1984, Contr. Astron. Obs. Scarnate Pleso, 12, 261.Google Scholar
Walker, G.A.H., Morris, S.C. and Younger, P.E. 1969, Ap. J., 156, No. 1, Part 1.Google Scholar