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.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.