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Table 2
Summary of published σgal − kTX scaling relation parameters, using the notation1 of Eq. (3).
| Source | σp (km s^-1 ) | α | β | Fitting method | N | Redshift |
|---|---|---|---|---|---|---|
| This work | 539 ± 16 | 0.63 ± 0.05 | − 0.49 ± 0.38 | Ensemble ML | 132 | z < 0.6 |
| Wilson et al. (2016) | 497 ± 85 | 0.86 ± 0.14 | − 0.37 ± 0.33 | ODR2 | 38 | z < 1 |
| Nastasi et al. (2014) | 508 ± 147 | 0.64 ± 0.34 | – | BCES bisector | 15 | 0.64 ≤ z ≤ 1.46 |
| Xue & Wu (2000) | 523 ± 13 | 0.61 ± 0.01 | – | ODR2 | 145 | z < 0.2 |
Notes. 1 We note that sample definitions, analysis methods and notation vary across sources. Published intercepts are renormalised to the fixed pivot temperature and redshift used in Eq. (3). 2 Orthogonal Distance Regression.
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