Table 7
Same as Table 2, but for HD 53138, compared with the results from Haucke et al. (2018), who adopted a β-law velocity profile.
| HD 53138 | Fast | δ-slow | Haucke et al. |
|---|---|---|---|
| Teff [K] | 18 500 | 18 500 | 18 000 |
| log g | 2.4 | 2.4 | 2.25 |
| log ϵSi | 7.51 | 7.51 | 7.51 |
| α | 0.53 | 0.53 | – |
| k | 0.15 | 0.15 | – |
| δ | 0.20 | 0.34 | – |
| β | – | – | 2.0 |
![$\dot M\left[ {{{10}^{ - 6}}{M_ \odot }/{\rm{yr}}} \right]$](/articles/aa/full_html/2025/12/aa55509-25/aa55509-25-eq11.png) |
0.449 | 0.244 | 0.24 |
| v∞ [km/s] | 414.66 | 254.31 | 600 |
| vmic [km/s] | 5 | 5 | 10 |
| v sin i [km/s] | 41 | 41 | 40 |
| vmac [km/s] | 55 | 55 | 50 |
| fcl | 1 | 1 | 1 |
Notes. Using only Hα line profile fitting, a value for the terminal velocity of 212.2 [km/s] for the δ-slow solution was estimated by Venero et al. (2024). Bernini-Peron et al. (2023) reported a v∞ = 680 [km/s] from UV lines.
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