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		| Paper: | 
		Stromgren and infrared photometry of OB candidates in the association Cygnus OB2 | 
	 
	
		| Volume: | 
		7, Properties of Hot Luminous Stars: Boulder-Munich Workshop | 
	 
	
		| Page: | 
		47 | 
	 
	
		| Authors: | 
		Torres-Dodgen, Ana V.; Carroll, Michael; Tapia, Mauricio | 
	 
	
	
		| Abstract: | 
		The Cygnus OB2 association contains some of the most massive and most luminous O-stars in the northern hemisphere. As a first step toward studying the initial mass function of Cyg OB2, uvby and JHKL-prime photometry were obtained for about 80 OB candidates in the region. The c1 vs. (b-y) color-color diagram is shown, indicating the main sequence line, approximate types, and reddening line. These results are briefly discussed. | 
	 
	
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