tokens: We thank Lars Bildsten, Jared Brooks, Rob Farmer, Jason Ferguson, Ken Shen, and Frank Timmes for helpful discussions. We thank Marius Dan and Cody Raskin for providing the results of their SPH simulations as part of previous work. We thank Ken'ichi Nomoto, Todd Thompson, and Stan Woosley for useful conversations following the presentation of these results in preliminary form. We thank an anonymous referee for comments that led to improvements in the manuscript. We acknowledge stimulating workshops at Sky House and Palomar Observatory where these ideas germinated. JS is supported by the NSF Graduate Research Fellowship Program under grant DGE-1106400 and by NSF grant AST-1205732 . EQ is supported in part by a Simons Investigator award from the Simons Foundation and the David and Lucile Packard Foundation. This research is funded in part by the Gordon and Betty Moore Foundation through Grant GBMF5076 . DK was supported in part by a Department of Energy Office of Nuclear Physics Early Career Award, and by the Director, Office of Energy Research, Office of High Energy and Nuclear Physics, Divisions of Nuclear Physics, of the US Department of Energy under Contract no. DE-AC02-05CH11231 . This research used the SAVIO computational cluster resource provided by the Berkeley Research Computing program at the University of California Berkeley (supported by the UC Chancellor, the UC Berkeley Vice Chancellor of Research, and the Office of the CIO). This research has made use of NASA's Astrophysics Data System and GNU Parallel (Tange 2011 ).
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