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		| Paper: | 
		VLBA Detection of Bipolar OH 1612 MHz Maser Emission Toward OH 37.1-0.8 | 
	 
	
		| Volume: | 
		199, Asymmetrical Planetary Nebulae II: From Origins to Microstructures | 
	 
	
		| Page: | 
		75 | 
	 
	
		| Authors: | 
		Gómez, Yolanda; Rodríguez, Luis F. | 
	 
	
	
		| Abstract: | 
		We present OH 1612 MHz maser observations toward OH 37.1-0.8 made with the VLBA at an angular resolution of ~10 milli-arcsec. This OH/IR star exhibits the H2O maser components in a velocity range much larger than that of the OH maser in disagreement with the standard model. We find from the VLBA observations that the OH maser emission toward OH 37.1-0.8 has a bipolar morphology suggesting that this source could be the progenitor of a bipolar planetary nebula. | 
	 
	
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