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		| Paper: | 
		The Discovery of Oxygen Rich Chromospheres in Two Massive DQ White Dwarfs | 
	 
	
		| Volume: | 
		334, 14th European Workshop on White Dwarfs | 
	 
	
		| Page: | 
		245 | 
	 
	
		| Authors: | 
		Provencal, J.L.; Shipman, H.L.; MacDonald, J. | 
	 
	
	
		| Abstract: | 
		We present HST observations of the massive DQ white dwarfs G227-5 and G35-26 in which we find the first clear evidence of chromospheric activity in cool, helium atmosphere field white dwarfs. | 
	 
	
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