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		| Paper: | 
		Color Indices, Binarity Effect and λ Boo Stars | 
	 
	
		| Volume: | 
		318, Spectroscopically and Spatially Resolving the Components of Close Binary Stars | 
	 
	
		| Page: | 
		312 | 
	 
	
		| Authors: | 
		Gerbaldi, M.; Faraggiana, R. | 
	 
	
	
		| Abstract: | 
		For the λ Boo stars we show that the binarity does not induce any spurious effect on color indices either on those of the Geneva photometric system or on those of the UV-TD1 photometry. The calibration of the Geneva photometry in terms of [M/H] gives useful information on metal content which can be misinterpreted through spectral analysis in the case of blended spectra of similar stars with high v sin i. | 
	 
	
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