The eclipsing, double-lined, Of supergiant binary Cygnus OB2-B17

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Volume 511 (February 2010)

A&A, 511 (2010) A84

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Table 2:

Results from the analysis of the light and radial velocity curves.
Parameter	Value
T₀ (MJD)	4 272.534 $\pm$ 0.004
Period, P	4.02174 $\pm$ 0.00003 days
Inclination, i	72 $\pm$ 1.5
Eccentricity, e	0 (Fixed)
Mass ratio q	0.75 (Fixed)
Temperature ratio	0.85 $\pm$ 0.02
Semi-major axis ( $R_{\odot}$ )	50 $\pm$ 1
Systemic velocity	-43 $\pm$ 4 km s^-1
Parameter	Primary	Secondary
Mass ( $M_{\odot}$ )	60 $\pm$ 5	45 $\pm$ 4
Radius ( $R_{\odot}$ )	22 $\pm$ 1	19 $\pm$ 1
log g (cgs)	3.53 $\pm$ 0.01	3.52 $\pm$ 0.01
RV Semi-amplitude (km s^-1)	257 $\pm$ 7	343 $\pm$ 9
mean $T_{\rm eff}$ (K)	35 000 (Fixed)	29 900 $\pm$ 700
Surface potential ( $\Omega$ )	3.14 $\pm$ 0.02	3.14 (Fixed)
$M_{\rm Bol}$	-9.8 $\pm$ 1	-8.8 $\pm$ 1

Notes. The errors shown should be considered internal errors of the fit. Any possible systematic errors are not included.

Source LaTeX | All tables | In the text

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