EDP Sciences logo
Subscriber Authentication Point
Search
Menu
Home All issues Volume 520 (September-October 2010) A&A, 520 (2010) A66 Full HTML
Free Access

 

 

Table 5:

Star and planet characteristics of the CoRoT-8 system.

CoRoT-ID 		0101086161
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

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.