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		| Paper: | 
		Sphericity effects in helium rich NLTE model atmospheres | 
	 
	
		| Volume: | 
		96, Hydrogen-Deficient Stars | 
	 
	
		| Page: | 
		266 | 
	 
	
		| Authors: | 
		Kubat, J. | 
	 
	
	
		| Abstract: | 
		We have calculated a sample grid of plane parallel and spherically symmetric hydrogen-helium model atmospheres with different helium abundances. The sphericity effects were found more pronounced than for the case of pure hydrogen atmospheres. | 
	 
	
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