Table 1.
Radial velocity differences from various methods.
| Comparison | Lines | ΔvWD (km/s) | ΔM (M⊙) |
|---|---|---|---|
| K1D | (Hα+Hβ) – (Hα) | −0.79 ± 1.42 | −0.02 ± 0.03 |
| Gfit –K1D | Hα+Hβ | −0.63 ± 1.54 | −0.01 ± 0.04 |
| Gfit –K1D | Hα | −0.35 ± 1.54 | −0.01 ± 0.03 |
| T3D | (Hα+Hβ) – (Hα) | −1.52 ± 1.70 | −0.03 ± 0.03 |
| Gfit – T3D | Hα+Hβ | −0.23 ± 2.10 | 0.00 ± 0.04 |
| Gfit – T3D | Hα | −0.68 ± 1.45 | −0.01 ± 0.03 |
| K1D – T3D | (Hα+Hβ) | 0.41 ± 0.71 | 0.01 ± 0.01 |
| K1D – T3D | Hα | −0.32 ± 0.77 | −0.01 ± 0.01 |
| Gfit | (Hα+Hβ) – (Hα) | −1.07 ± −3.48 | −0.02 ± 0.07 |
| LR – K1D | (Hα...Hζ) – (Hα+Hβ) | 2.85 ± 11.84 | 0.06 ± 0.23 |
Notes. K1D and T3D refer to the Koester and Tremblay models, respectively; Gfit corresponds to a Gaussian fit of the Hα or Hα+Hβ performed independently; LR refers to the low-resolution analysis that is performed with the Koester models; the corresponding ΔM are estimated for a typical white dwarf of Teff = 10 000 K and M = 0.61 M⊙.
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