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		| Paper: | 
		Shell-Model Parameters of a Star with the R Coronae Borealis Type Variability | 
	 
	
		| Volume: | 
		391, Hydrogen-Deficient Stars | 
	 
	
		| Page: | 
		39 | 
	 
	
		| Authors: | 
		Rosenbush, A.E. | 
	 
	
	
		| Abstract: | 
		Based on current observational data, a revised model of spherical homogenous circumstellar shell is offered for an interpretation of visual light minima of stars with the R Coronae Borealis type variability. In this model, a light minimum is connected with the formation of one more shell in addition to the permanent one. The structure of circumstellar environment of a star with the R Coronae Borealis type variability during a visual light minimum and in a quiet state is described. Some principal physical and geometrical parameters of circumstellar shells are presented. | 
	 
	
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