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

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Table 1:

Best-fit parameters of the continuum light curves of Cyg OB2#5.
Parameter	c₁ and c₂
i ( $^{\circ}$ )	$64.2^{\rm +1.3}_{-1.7}$
q	3.31 (fixed)
Filling factor primary	$1.00^{\rm +.02}_{-.01}$
Filling factor secondary	$1.00^{\rm +.02}_{-.01}$
$T_{\rm eff, p}$ (K)	36000 (fixed)
$T_{\rm eff, s}$ (K)	29500 (fixed^a)
Bright ``spot''
Longitude	$(-15^{\rm +12}_{-16})^{\circ}$
Latitude	$0^{\circ}$ (fixed)
Radius	$(130^{\rm +11}_{-29})^{\circ}$
Temperature ratio	$1.24^{\rm +.21}_{-.14}$

^a This value was derived from the best-fit model without a spot on the secondary
star and refers here only to the un-spotted part of the secondary's surface.

Source LaTeX | All tables | In the text

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