1. The Elm Survey. II. Twelve Binary White Dwarf Merger Systems Kilic, Mukremin; Brown, Warren R.; Prieto, Carlos Allende; Agüeros, Marcel Andre; Heinke, Craig; Kenyon, S. J. 2011 Articles AstrophysicsWhite dwarf starsBinary starsLow mass starsX-ray astronomyStars--ObservationsAstronomy