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Table 2

Standardization fit results.

Fit parameters SNe χ2 χ2 ∕dof HR RMS (mag) Host mass step (mag) LsSFR step (mag)
x1 73 70.76 1.00 0.135 ± 0.011 0.098 ± 0.031 − 0.151 ± 0.028
             
uTi@p6 57 44.18 0.80 0.116 ± 0.011 0.042 ± 0.031 − 0.075 ± 0.031
             
x1 (cut) 43 43.22 1.05 0.136 ± 0.015 0.094 ± 0.037 − 0.156 ± 0.035
             
uTi@p6 (cut) 43 27.21 0.66 0.105 ± 0.012 0.034 ± 0.033 − 0.068 ± 0.034
             
x1 + uCa@m6 52 40.90 0.83 0.122 ± 0.012 0.081 ± 0.033 − 0.138 ± 0.030
             
uTi@p6 + uCa@m6 43 18.22 0.46 0.086 ± 0.010 0.022 ± 0.030 − 0.065 ± 0.030
             

Notes. The first column shows which standardization parameters are included (in addition to SALT2.4 color), where cut fits are restricted to SNe with measurements both at pre-peak and post-peak phases. The number of SNe included is given in the second column. The intrinsic dispersion was fixed to 0.090 mag for all runs. The size of a step based on global host-galaxy mass or local age (LsSFR) were calculated as in R17 and are shown in the final two columns.

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