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		| Paper: | 
		New 3mm Observations of W51 | 
	 
	
		| Volume: | 
		267, Hot Star Workshop III: the Earliest Stages of Massive Star Birth | 
	 
	
		| Page: | 
		421 | 
	 
	
		| Authors: | 
		Sollins, P. K.; Zhang, Q.; Ho, P. T. P. | 
	 
	
	
		| Abstract: | 
		We present new 3mm observations of the W51 region, centered on W51IRS1, including the H II regions W51d, and W51e. The SO2 [8(1,7)-8(0,8)], SO2 [8(3,5)-9(2,8)] , SiO (J=2-1, nu = 0), and H13CO+ (J=1-0) have been mapped. and SiO lines show molecular gas centered roughly on W51e4, an UCHII region detected at centimeter wavelengths. | 
	 
	
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