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Table B.1

Parameters of the best fit with nightfall to the V -band light curve ofCyg OB2 #5.

Parameter Value
q 3.2 (fixed)
fillA = fillB 1.04 ± 0.03
iA+B (°)
TA (K) 36 000 (fixed)
TB (K) 25 000 ± 500
(lC + lD)∕(lA + lB + lC + lD)
Spot latitude (°) 0 (fixed)
Spot longitude (°) 1.7 ± 0.5
Spot radius (°) 36.8 ± 1.0
Dim factor 1.9 ± 0.1

Notes. The uncertainties on TB, the spot radius and dim factor are only indicative as these parameters present a high degree of correlation.

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