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Table 5:

Star and planet characteristics of the CoRoT-8 system.

CoRoT-WinID LRc01-E2-1145
GSC 2.3 N29S083644
Coordinates (J2000) 19:26:21.245 +01:25:35.55
Magnitudes B, V, r', i' 16.10, 14.80, 14.27, 13.41
Results from light-curve analysis
Planet period, P $6.21229 \pm 0.00003$ days
Transit epoch, T0 HJD $2~454~238.9743 \pm 0.0004$
Transit duration, T14 $2.74 \pm 0.02$ h
Transit relative depth, $\delta$ $(6.51 \pm 0.07)\times 10^{-3}$
Radius ratio, $R_{\rm p}/R_\star$ $0.075 \pm 0.001$
Scaled semi-major axis, $a/R_\star$ $17.6 \pm 0.4$
Orbital inclination, i $88.4 \pm 0.1$$^\circ$
Impact parameter, b $0.49 \pm 0.04$
Limb-darkening coefficients, u1, u2 $0.70 \pm 0.09$, $0.14 \pm 0.09$
Stellar density, $\rho_\star$ $2.7 \pm 0.1$ g cm-3
$M_\star^{1/3}/R_\star$ $1.24 \pm 0.03$ (solar units)
Results from radial velocity observations
Radial velocity semi-amplitude, K $26\pm4$ m s-1
Orbital eccentricity, e 0 (fixed)
Systemic radial velocity $-37.468 \pm 0.003$ km s-1
Results from spectral typing
Spectral type K1V
Effective temperature, $T_{\rm eff}$ $5080 \pm 80$ K
Surface gravity, $\log g$ $4.58 \pm 0.08$ (cgs)
Metallicity, $[{\rm M}/{\rm H}]$ $0.3 \pm 0.1$
Micro-turbulent velocity, $v_{\rm mic}$ $0.8 \pm 0.2$ km s-1
Macro-turbulent velocity, $v_{\rm mac}$ $2 \pm 1$ km s-1
Rotational velocity, $v\sin i$ $2 \pm 1$ km s-1
Star mass, $M_\star$ $0.88 \pm 0.04 \: {M}_\odot$
Star radius, $R_\star$ $0.77 \pm 0.02 \: {R}_\odot$
Star age $\le$3 Ga
Star distance $380 \pm 30$ pc
Absolute physical parameters from combined analysis
Planet mass, $M_{\rm p}$ $0.22 \pm 0.03$  ${M}_{\rm J}$
Planet radius, $R_{\rm p}$ $0.57 \pm 0.02$  ${R}_{\rm J}$
Planet density, $\rho_{\rm p}$ $1.6 \pm 0.1$ g cm-3
Planet orbital semi-major axis, a $0.063 \pm 0.001$ AU

Source LaTeX | All tables | In the text

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