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Table 6

Determination of the brightness ratio of the close binary system HD 17505Aa from the dilution of prominent lines.

Line EW (Å) l1l2
Primary (Aa1) Secondary (Aa2)
He I + II λ 4026 0.11 0.15 0.73
He II λ 4200 0.09 0.10 0.94
Hγ 0.51 0.52 0.98
He I λ 4471 0.12 0.14 0.88
He II λ 4542 0.14 0.17 0.87

Mean value 0.88  ± 0.09

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