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Recent increase of the activity of the symbiotic star CH Cygni

Published online by Cambridge University Press:  12 April 2016

Drahomir Chochol  and
Ladislav Hric
Drahomir Chochol
Affiliation:
Astronomical Institute of the Slovak Academy of Sciences, Tatranska Lomnica, Czechoslovakia
Ladislav Hric
Affiliation:
Astronomical Institute of the Slovak Academy of Sciences, Tatranska Lomnica, Czechoslovakia

Extract

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CH Cyg has exhibited a great deal of activity in the recent times. We obtained two spectra with dispersion of 9 A/mm with the 2 m telescope of the Ondrejov Observatory on the nights of July 4/5 and August 6/7, 1981. The differences between these spectra are conspicuous. The description of the spectral changes during this period follows:

The Balmer lines became broader, the R wing of the early Balmer shell lines being partly suppressed by absorption. The inverse P Cygni profiles became apparent from H8 to H30.

Type
Session II – Discussion on Individual Stars
Information
International Astronomical Union Colloquium , Volume 70: The Nature of Symbiotic Stars , 1982 , pp. 137 - 138
Copyright
Copyright © Reidel 1982