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		| Paper: | 
		Simulating Collapsing Clouds | 
	 
	
		| Volume: | 
		323, Star Formation in the Interstellar Medium:  In Honor of David Hollenbach, Chris McKee, and Frank Shu | 
	 
	
		| Page: | 
		385 | 
	 
	
		| Authors: | 
		Allen, A. | 
	 
	
	
		| Abstract: | 
		It is believed that stars form from the collapse of molecular cloud cores. To study this process, magneto-hydrodynamics simulations were carried out, starting with the singular isothermal sphere and adding additional physics to elucidate the star formation process. This work summarizes the models treated by Allen, Shu, & Li (2003) and Allen, Li, and Shu (2003) using zeus2d (Norman and Stone, 1992ab). We also present a new method of limiting the Alfvén velocity in the near vacuum region by the MHD mesh that allows extension of the non-rotating, magnetized simulations up to more flattened configurations. | 
	 
	
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