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		| Paper: | 
		Evidence for evolution of R Coronae Borealis stars and related objects | 
	 
	
		| Volume: | 
		9, Cool Stars, Stellar Systems, and the Sun: Sixth Cambridge Workshop | 
	 
	
		| Page: | 
		401 | 
	 
	
		| Authors: | 
		Lawson, W. A.; Cottrell, P. L. | 
	 
	
	
		| Abstract: | 
		Many of the R Coronae Borealis (RCB) stars, and other related hydrogen deficient carbon stars have been observed, to more fully investigate their photometric and spectroscopic properties. A provisional period-temperature relationship for these stars is discussed. The observed relationship is generally consistent with evolutionary models for RCB-type stars evolving toward higher temperatures. | 
	 
	
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