Fig. 3
Left: Uncorrected Hubble residual vs. flux ratio ℛ(6630/4400) at maximum light for SN Ia at z > 0.005 with |Δ(B − V)| < 0.1 mag, color-coded according to the SALT2 color parameter, c. Points corresponding to SN Ia with c > 0.5 are labeled. The dashed line is a linear fit to the SN Ia with c < 0.5. The dotted lines are reddening curves for different values of RV, normalized to the smallest ℛ(6630/4400) value. Right: Color-corrected Hubble residual vs. color-corrected flux ratio ℛc(6420/5290) at maximum light.
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