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		| Paper: | 
		The Role of Interactions in the Evolution of Early-type Spiral Galaxies | 
	 
	
		| Volume: | 
		240, Gas and Galaxy Evolution: A Conference in Honor of the 20th Anniversary of the VLA | 
	 
	
		| Page: | 
		230 | 
	 
	
		| Authors: | 
		Hameed, S.; Young, L. M.; Thilker, D. A.; Blank, D. L. | 
	 
	
	
		| Abstract: | 
		We provide further support for the idea that interactions are common in early-type(Sa-Sab) spirals and that they may also be responsible for the unexpected presence of giant H II regions in some of these galaxies. Our HI mapping of four high star forming Sa-Sab galaxies has revealed morphological peculiarities in all of them. We suspect that almost all early-type spirals with high massive star formation rates may be going through an interaction. | 
	 
	
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