Measurements of Ω and Λ from 42 High-Redshift Supernovae

  title={Measurements of $\Omega$ and $\Lambda$ from 42 High-Redshift Supernovae},
  author={Steve I. Perlmutter and Greg Aldering and Gerson. Goldhaber and Robert Knop and Peter E. Nugent and Patricia G. Castro and Susana E. Deustua and S{\'e}bastien Fabbro and Ariel Goobar and Donald E. Groom and Isobel M. Hook and Alex G Kim and M. Y. Kim and J. C. Lee and Nelson J. Nunes and R. Pain and Carl R. Pennypacker and Robert M. Quimby and Chris Lidman and R. S. Ellis and Michael Irwin and Richard G. McMahon and Pilar Ruiz-Lapuente and Nancy A. Walton and Brennan Schaefer and B. J. Boyle and Alexei V. Filippenko and Thomas Matheson and Andrew S. Fruchter and Nino Panagia and Heidi Jo Newberg and W. J. Couch and The Supernova Cosmology Project},
  journal={The Astrophysical Journal},
  pages={565 - 586}
We report measurements of the mass density, ΩM, and cosmological-constant energy density, ΩΛ, of the universe based on the analysis of 42 type Ia supernovae discovered by the Supernova Cosmology Project. The magnitude-redshift data for these supernovae, at redshifts between 0.18 and 0.83, are fitted jointly with a set of supernovae from the Calán/Tololo Supernova Survey, at redshifts below 0.1, to yield values for the cosmological parameters. All supernova peak magnitudes are standardized using… 

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