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Table 3.
Estimated equivalent widths (with their errors) of the spectral lines of He I and He II, along with the assigned parameter z to identify the spectral feature Vz in the analyzed stars in NGC 346.
| Star | He I λ4471 | He II λ4542 | He II λ4686 | z | Spectral Type | |||
|---|---|---|---|---|---|---|---|---|
| EW | σ | EW | σ | EW | σ | |||
| NGC 346-10 | 0.26 | 0.01 | 0.72 | 0.01 | 0.73 | 0.01 | 1.02 | O5.5 V((f+)) |
| NGC 346-13 | 0.46 | 0.01 | 0.42 | 0.01 | 0.73 | 0.01 | 1.58 | O8 Vz |
| NGC 346-15 | 0.46 | 0.01 | 0.99 | 0.01 | 0.84 | 0.01 | 0.86 | O6.5 V |
| NGC 346-17 | 0.64 | 0.01 | 0.20 | 0.01 | 0.44 | 0.01 | 0.69 | O9.2 V |
| NGC 346-20 | 0.42 | 0.01 | 1.00 | 0.01 | 0.77 | 0.01 | 0.77 | O7 V |
| NGC 346-21 | 0.55 | 0.01 | 0.48 | 0.01 | 0.62 | 0.01 | 1.10 | O7 Vz |
| NGC 346-23 | 0.60 | 0.01 | 0.59 | 0.01 | 0.79 | 0.01 | 1.32 | O7.5 Vz |
| NGC 346-29 | 0.80 | 0.01 | 0.78 | 0.01 | 0.53 | 0.01 | 0.66 | O9.5 V |
| NGC 346-31 | 0.26 | 0.01 | 0.77 | 0.01 | 0.87 | 0.01 | 1.13 | O5.5 Vz |
| NGC 346-32 | 0.77 | 0.01 | 0.41 | 0.01 | 0.55 | 0.01 | 0.72 | O9.5 V |
| NGC 346-37 | 0.49 | 0.03 | 1.03 | 0.01 | 0.69 | 0.01 | 0.67 | O8 V |
| NGC 346-38 | 0.74 | 0.01 | 0.71 | 0.02 | 0.75 | 0.01 | 1.01 | O9 V |
| NGC 346-41 | 0.80 | 0.01 | 0.33 | 0.01 | 0.50 | 0.01 | 0.62 | O9.5 V |
| NGC 346-44 | 0.73 | 0.01 | 1.14 | 0.01 | 0.85 | 0.01 | 0.75 | O8 Vn |
| NGC 346-48 | 0.63 | 0.01 | 0.77 | 0.01 | 0.75 | 0.01 | 0.98 | O8 V |
| NGC 346-54 | 0.43 | 0.01 | 1.01 | 0.01 | 0.96 | 0.01 | 0.95 | O6.5 V |
| NGC 346-56 | 0.70 | 0.01 | 0.78 | 0.01 | 0.81 | 0.01 | 1.04 | O8 V |
| NGC 346-57 | 0.52 | 0.02 | 0.78 | 0.01 | 0.93 | 0.02 | 1.19 | O7 Vz |
| NGC 346-58 | 0.86 | 0.01 | 0.40 | 0.01 | 0.64 | 0.01 | 0.74 | O9.5 V |
| NGC 346-61 | 0.70 | 0.02 | 0.36 | 0.02 | 0.65 | 0.02 | 0.93 | O9.5 V |
| NGC 346-77 | 0.59 | 0.01 | 0.61 | 0.02 | 0.71 | 0.01 | 1.16 | O7.5 Vz |
| NGC 346-83 | 0.83 | 0.01 | 0.27 | 0.01 | 0.48 | 0.01 | 0.57 | O9.5 V |
| NGC 346-85 | 0.77 | 0.01 | 0.12 | 0.01 | 0.40 | 0.01 | 0.52 | O9.7 V |
| NGC 346-1034 | 0.77 | 0.01 | 0.38 | 0.01 | 0.49 | 0.01 | 0.63 | O9 V |
| NGC 346-1067 | 0.30 | 0.01 | 0.44 | 0.02 | 0.70 | 0.02 | 1.51 | O8.5 Vz |
| NGC 346-1094 | 0.58 | 0.02 | 0.50 | 0.01 | 0.68 | 0.01 | 1.18 | O8 Vz |
| NGC 346-1114 | 0.69 | 0.02 | 0.30 | 0.02 | 0.58 | 0.02 | 0.84 | O9 V |
| NGC 346-1144 | 0.46 | 0.02 | 0.28 | 0.01 | 0.47 | 0.01 | 1.01 | O9.5 V |
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