Improved cosmological constraints from a joint analysis of the SDSS-II and SNLS supernova samples

@article{Betoule2014ImprovedCC,
  title={Improved cosmological constraints from a joint analysis of the SDSS-II and SNLS supernova samples},
  author={Marc Betoule and Richard Kessler and Julien Guy and J. Mosher and Douglas P. Hardin and Rahul Biswas and Pierre Astier and P. El-Hage and M. Konig and Stephen E. Kuhlmann and John Marriner and R. Pain and Nicolas Regnault and Christophe Balland and Bruce A. Bassett and Peter. J. Brown and Harry Campbell and Raymond G. Carlberg and F. Cellier-Holzem and David Anthony Cinabro and Alex Conley and Chris D'Andrea and Darren Lee Depoy and Masao Doi and Richard S. Ellis and S{\'e}bastien Fabbro and Alexei V. Filippenko and Ryan J. Foley and Joshua A. Frieman and Dominique Fouchez and Llu{\'i}s Galbany and Ariel Goobar and R. Gupta and Gary J. Hill and Ren{\'e}e Hlo{\vz}ek and Craig Hogan and Isobel M. Hook and D. Andrew Howell and Saurabh W. Jha and Laurent Le Guillou and Giorgos Leloudas and Christopher E. Lidman and Jennifer L. Marshall and Anais Moller and Ana M. Mour{\~a}o and J{\'e}r{\'e}my Neveu and Robert Nichol and Matthew D. Olmstead and Nathalie Palanque-Delabrouille and Saul Perlmutter and Jos{\'e} Luis Prieto and C. Pritchet and Michael W. Richmond and Adam G. Riess and Vanina Ruhlmann-Kleider and Masao Sako and Kyan Schahmaneche and Donald P. Schneider and M. Smith and Jesper Sollerman and Mark Sullivan and Nancy A. Walton and Craig Wheeler},
  journal={Astronomy and Astrophysics},
  year={2014},
  volume={568}
}
Aims. We present cosmological constraints from a joint analysis of type Ia supernova (SN Ia) observations obtained by the SDSS-II and SNLS collaborations. The dataset includes several low-redshift samples (z< 0.1), all three seasons from the SDSS-II (0.05 <z< 0.4), and three years from SNLS (0.2 <z< 1), and it totals 740 spectroscopically confirmed type Ia supernovae with high-quality light curves. Methods. We followed the methods and assumptions of the SNLS three-year data analysis except… 
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