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		| Paper: | 
		A binary star technique for investigating the extended atmospheres of cool stars | 
	 
	
		| Volume: | 
		9, Cool Stars, Stellar Systems, and the Sun: Sixth Cambridge Workshop | 
	 
	
		| Page: | 
		243 | 
	 
	
		| Authors: | 
		Thiering, I.; Baade, R.; Schroeder, K.-P.; Erhorn, G.; Huensch, M. | 
	 
	
	
		| Abstract: | 
		A multidimensional non-LTE radiative transfer code is developed to study the extended atmosphere of a binary star system, and curves of growth are used to analyze the spectra of different chromospheric eclipse phases. The radiative transfer code allows the calculation of emergent intensities, flux-line profiles, mass-loss rates, terminal wind velocity, and the line-broadening parameter. Combined with the electron temperatures and densities derived from the curve of growth analysis, detailed descriptions of the extended atmospheres of some late-type giants and supergiants are given. | 
	 
	
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