Fig. 5

Evolution of SALT2 parameters α, β, ℳ, and σint with redshift for the SDSS compilation for model ΛCDM. The cosmological parameters were kept fixed at their global best-fit values. The black circles and the gray squares are the results for the likelihood and the χ2 approaches, respectively. The error bars represent the 68% confidence intervals, marginalizing over all other parameters with flat priors.
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