Abstract
The shell spectrum of CH Cyg observed in 1981 has been analyzed by the curve of growth method and using the equivalent widths of Balmer lines. The following parameters for the region of the shell where the absorption spectrum is formed have been obtained: excitation temperatureTex=9000 K, microturbulent velocityv t =16 km s−1, electron densityne=6.3×1012, number of active hydrogen atoms in the second excited stateN0.2=5.8×1015, and the effective height of the absorption spectrum formation regionH=105 km.
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