ner_tags: O O O B-Person I-Person B-Person I-Person B-Person I-Person B-Person I-Person B-Person I-Person O B-Person I-Person O O O O O O O O O O O O O O B-Observatory I-Observatory I-Observatory O O O B-Organization I-Organization I-Organization O B-Grant O B-Grant B-Person O O O B-Organization I-Organization I-Organization I-Organization I-Organization I-Organization O O B-Fellowship I-Fellowship O O B-Organization I-Organization I-Organization I-Organization O B-Organization O O O O O B-Software I-Software I-Software I-Software B-Citation I-Citation I-Citation I-Citation O
tokens: The authors thank Adam Riess, Daniel Eisenstein, Eric Linder, Kaisey Mandel, Andrew Friedman, and Raul Jimenez for very useful discussions and suggestions to improve this work. Supernova cosmology at the Harvard College Observatory is supported by National Science Foundation grants AST-156854 and AST-1211196. A.A. acknowledges, also, the Instituto Avanzado de Cosmología of Mexico, and the Mexico-Harvard Fellowship sponsored by Fundación México en Harvard and CONACyT. We acknowledge the use of emcee: The MCMC Hammer (Foreman-Mackey et al. 2013 ).