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Home All issues Volume 508 / No 1 (December II 2009) A&A, 508 1 (2009) 391-394 Full HTML
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Table 3:

Parameters of HD 186753B and TYC7096-222-1B and their orbits.
Parameter HD 186753B TYC7096-222-1B (e=0.00) TYC7096-222-1B (e=0.75)

Eclipse epoch (HJD) 		$3940.40144^{\rm +0.00091}_{-0.00081}$ $4373.01637^{\rm +0.00066}_{-0.00087}$ -
Orbital period (days) $1.9193851^{\rm +0.0000412}_{-0.0000393}$ $8.9582591^{\rm +0.0000346}_{-0.0000314}$ -
Eclipse duration (days) $0.1662^{\rm +0.0038}_{-0.0031}$ $0.2430^{\rm +0.0039}_{-0.0042}$ -
Secondary/primary area ratio, (R2/R1)2 $0.0148^{\rm +0.0005}_{-0.0003}$ $0.0251^{\rm +0.0006}_{-0.0005}$ -
Impact parameter, b (R*) $0.264^{\rm +0.191}_{-0.154}$ $0.250^{\rm +0.157}_{-0.142}$ -
Stellar reflex vel., $\rm {K}_{1}$ ( $\rm {km\ s^{-1}}$) $-27.449\pm1.751$ $-20.341\pm2.974$ $-58.432\pm6.122$
Centre-of-mass vel., $\gamma$ ( $\rm {km\ s^{-1}}$) $-14.641\pm2.980$ $4.074\pm1.533$ $8.776\pm0.748$
Orbital separation, a (AU) $0.0370^{\rm +0.0012}_{-0.0013}$ $0.0990^{\rm +0.0031}_{-0.0034}$ -
Orbital inclination, i (deg) $87.09^{\rm +1.69}_{-1.79}$ $89.00^{\rm +0.57}_{-0.73}$ -
Orbital eccentricity, e $0.269\pm0.087$ (fixed = 0.00) (fixed = 0.75)
Longitude of periastron, $\omega$ (deg) $166.7\pm5.9$ (not fitted) $167.2\pm61$
Stellar Mass, $M_{2}(M_{\odot})$ $0.236\pm0.017$ $0.286\pm0.019$ $0.544\pm0.057$
Stellar Radius, $R_{2}(R_{\odot})$ $0.307^{\rm +0.057}_{-0.057}$ $0.263^{\rm +0.020}_{-0.071}$ -
Luminosity ratio, L1/L2 979.7 520.4 361.9

The parameters of TYC7096-222-1B determined from the photometry are the same for both eccentricities.


Source LaTeX | All tables | In the text

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