A multiwavelength investigation of the massive eclipsing binary Cygnus OB2 #5

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Table 2:

Parameters of the best-fit solutions to the light curves of Cyg OB2#5 as observed through the line-bearing filters.
Filter^a	He II	C IV	He I
$T_{\rm eff, s}$ (K)	28 400	32 600	21 300
Bright spot
Longitude $(^{\circ})$	-15	-28	-26
Radius $(^{\circ})$	125	117	118
Temperature ratio	1.14	1.26	1.46

^a Several parameters were frozen in these fits: $i = 64.2^{\circ}$ , q = 3.31, primary and secondary filling factors = 1.00, $T_{\rm eff, p} = 36~000$ K, latitude of the bright $\rm spot = 0^{\circ}$ .

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