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		| Paper: | 
		The DDO Close Binary Spectroscopic Program | 
	 
	
		| Volume: | 
		435, Binaries – Key to Comprehension of the Universe | 
	 
	
		| Page: | 
		195 | 
	 
	
		| Authors: | 
		Rucinski, S. M. | 
	 
	
	
		| Abstract: | 
		The survey of radial velocity orbits for short period (P<1 day), bright (V<10, with a few fainter stars) conducted at the David Dunlap Observatory in the last 9 years before its closure in 2008 included 162 binaries and resulted in 150 SB2 orbits and 5 SB1 spectroscopic orbits thus becoming one of the main legacies of DDO. The paper summarizes the main results from the survey. | 
	 
	
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