First Cosmology Results Using SNe Ia from the Dark Energy Survey: Analysis, Systematic Uncertainties, and Validation

  title={First Cosmology Results Using SNe Ia from the Dark Energy Survey: Analysis, Systematic Uncertainties, and Validation},
  author={Dillon Brout and Dan Scolnic and Richard Kessler and Chris D'Andrea and Tamara M. Davis and R. Gupta and Samuel R. Hinton and Alex G Kim and J Lasker and Christopher E. Lidman and E Macaulay and Anais M{\"o}ller and Robert C. Nichol and Masao Sako and M. Smith and Mark Sullivan and B. Zhang and P Andersen and Jacobo Asorey and Arturo Avelino and Bruce A. Bassett and Peter. J. Brown and Josh Calcino and Daniela Carollo and Peter J. Challis and Michael J. Childress and Alejandro Clocchiatti and Alexei V. Filippenko and Ryan J. Foley and Llu{\'i}s Galbany and Karl Glazebrook and Janie K. Hoormann and Eli Kunwiji Kasai and Robert P. Kirshner and Kyler W. Kuehn and Stephen E. Kuhlmann and Geraint F. Lewis and Kaisey S. Mandel and M March and Vivian Miranda and Eric Morganson and Daniel Muthukrishna and Peter E. Nugent and Antonella Palmese and Y.-C. Pan and Rob Sharp and Natalia E. Sommer and E. Swann and R. C. Thomas and Brad E. Tucker and Syed Ashraf Uddin and William C. Wester and Timothy M. C. Abbott and Sahar Allam and James T. Annis and Santiago {\'A}vila and Keith C. Bechtol and Gary M. Bernstein and Emmanuel Bertin and David Brooks and David L. Burke and Aurelio Carnero Rosell and Matias Carrasco Kind and Jorge Carretero and Francisco J. Castander and Carlos E. Cunha and L. N. da Costa and C. Davis and Juan Carlos de Vicente and Darren Lee Depoy and Shantanu Desai and H. Thomas Diehl and Peter Doel and Alex Drlica-Wagner and T. F. Eifler and Juan Estrada and Eduardo B. Fernandez and Brenna L. Flaugher and Pablo Fosalba and Joshua A. Frieman and Juan Garc'ia-Bellido and Daniel Gruen and Robert A. Gruendl and Gaston R. Guti{\'e}rrez and William G. Hartley and Devon L. Hollowood and Klaus Honscheid and Ben Hoyle and David J. James and Michael Jarvis and Tesla E. Jeltema and E. Krause and Ofer Lahav and T. S. Li and Marcos Lima and Marcio A. G. Maia and John Marriner and Jennifer L. Marshall and Paul Martini and Felipe Menanteau and C. J. Miller and Ramon Miquel and R. L. C. Ogando and Andreas Alejandro Plazas and A. K. Romer and Aaron Roodman and Eli S. Rykoff and Eusebio S{\'a}nchez and Bas{\'i}lio Xavier Santiago and Victor E. Scarpine and Michael S. Schubnell and Santiago Serrano and Ignacio Sevilla-Noarbe and R. C. Smith and Marcelle Soares-Santos and Flavia Sobreira and Eric Suchyta and Mollye E. C. Swanson and Gregory G. Tarl{\'e} and D. Thomas and Michael Troxel and Douglas L. Tucker and Vinu Vikram and Alistair R. Walker and Y. Zhang},
  journal={The Astrophysical Journal},
We present the analysis underpinning the measurement of cosmological parameters from 207 spectroscopically classified SNe Ia from the first 3 years of the Dark Energy Survey Supernova Program (DES-SN), spanning a redshift range of 0.017 < z < 0.849. We combine the DES-SN sample with an external sample of 122 low-redshift (z < 0.1) SNe Ia, resulting in a “DES-SN3YR” sample of 329 SNe Ia. Our cosmological analyses are blinded: after combining our DES-SN3YR distances with constraints from the… 
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