Table 6.
Dust-step significance (in σ), magnitude (γD), ΔRMS and RMSdual for the Tripp and Tripp+δμM standardizations.
| Standardization | Split | Step | Step location |
Sig. (in σ) | γD | ΔRMS | RMSdual | |
|---|---|---|---|---|---|---|---|---|
| τV | n | |||||||
| Tripp | First | Global | 0.56 | −1.25 | 1.81 | 0.064 ± 0.035 | 0.0009 | 0.1405 |
| Local | 1.29 | −0.105 | 2.89 | −0.073 ± 0.025 | 0.0041 | 0.1373 | ||
| Second | Global | 1.785 | −0.905 | 4.20 | −0.089 ± 0.021 | 0.0071 | 0.1343 | |
| Local | 1.29 | −1.53 | 4.55 | −0.101 ± 0.022 | 0.0086 | 0.1328 | ||
| Third | Global | 1.785 | −0.82 | 3.45 | 0.085 ± 0.025 | 0.0047 | 0.1367 | |
| Local | 1.29 | −0.595 | 3.76 | 0.094 ± 0.025 | 0.0065 | 0.1349 | ||
| Tripp+δμM | Second | Global | 1.785 | −0.855 | 3.52 | −0.072 ± 0.021 | 0.0049 | 0.1310 |
| Local | 1.29 | −1.53 | 3.36 | −0.070 ± 0.021 | 0.0045 | 0.1251 | ||
Notes. For the Tripp+δμM standardization, the step location and magnitude recovered for the optimal mass step found in Sect. 5.2.1 are used. ΔRMS is defined as the difference between the RMSsingle obtained when considering the Hubble residuals as a single population and the RMSdual obtained when considering them as two separate populations, each with a separate mean and divided at the step. The First, Second and Third splits refer to which of the quadrants depicted in Fig. 8 is isolated from the remaining SN population (1, 2 and 3, respectively).
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