The thermal emission of the young and massive planet CoRoT-2b at 4.5 and 8 μm

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Volume 511 (February 2010)

A&A, 511 (2010) A3

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Table 1:

CoRoT-2 system parameters and 1- $\sigma$ error limits derived from our MCMC analysis.
Parameter	This study	A08/B08	Unit
Jump parameters
Planet/star area ratio $(R_{\rm p} /R_{\rm s} )^2$	$0.02750 \pm 0.00012$	$0.02779 \pm 0.00020$ [A08]
$b' = a \cos{i}/R_\ast$	$0.223^{\rm + 0.018}_{- 0.020}$	$0.253 \pm 0.012$ [A08]	R_*
Transit width W	$0.09446^{\rm +0.00011}_{-0.00010}$	-	days
$e \cos{\omega}$	$-0.00291^{\rm +0.00063}_{-0.00061}$	0 (fixed) [A08 & B08]
$e \sin{\omega}$	$0.0139^{\rm +0.0079}_{-0.0084}$	0 (fixed) [A08 & B08]
$V \sin{I} \cos{\beta}$	$10.79^{\rm +0.33}_{-0.32}$	$11.76 \pm 0.51$ [B08]
$V \sin{I} \sin{\beta}$	$-0.8^{\rm +1.2}_{-1.1}$	$-1.48 \pm 0.93$ [B08]
4.5 $\mu$ m ${\rm d}F_2$	$0.00510^{\rm +0.00041}_{-0.00040}$	-
8 $\mu$ m ${\rm d}F_2$	$0.0041 \pm 0.0011$	-
RV K₂	$725 \pm 22$	$678 \pm 17$ [A08]
^*Transit epoch T₀	$2~454~237.53556^{\rm +0.00020}_{-0.00021}$	2 454 237.53562 $\pm$ 0.00014 [A08]	HJD
^*Orbital period P	$1.7429935 \pm 0.0000010$	1.7429964 $\pm$ 0.0000017 [A08]	days
^*c₁	$0.911 \pm 0.016$	$0.88 \pm 0.07$ [A08]
^*c₂	$-0.094 \pm 0.078$	$0.29 \pm 0.07$ [A08]
Deduced parameters
^* $V \sin{I}$	$10.87 \pm 0.32$	$11.85 \pm 0.50$ [B08]	km s^-1
$\beta$	$-4.0^{\rm +6.1}_{-5.9}$	$-7.2 \pm 4.5$ [B08]	degrees
RV K	$603 \pm 18$	563 $\pm$ 14 [A08]	m s^-1
$b_{\rm transit}$	$0.221 ^{\rm + 0.017}_{- 0.019}$	$0.253 \pm 0.012$ [A08]	R_*
$b_{\rm occultation}$	$0.226^{\rm + 0.018}_{- 0.020}$	$0.253 \pm 0.012$ [A08]	R_*
$T_{\rm occultation}$	$2~454~238.40380 ^{\rm +0.00071}_{-0.00068}$	2 454 238.40712 $\pm$ 0.00014 [A08]	HJD
Orbital semi-major axis a	$0.02798^{\rm + 0.00076}_{- 0.00080}$	$0.0281 \pm 0.0009$ [A08]	AU
Orbital inclination i	$88.08^{\rm +0.18 }_{-0.16}$	87.84 $\pm$ 0.1 [A08]	degrees
Orbital eccentricity e	$0.0143^{\rm +0.0077}_{-0.0076}$	0 [fixed, A08 & B08]
Argument of periastron $\omega$	$102^{\rm +17}_{-5}$	-	degrees
Stellar mass $M_\ast$	$0.96 \pm 0.08$	0.97 $\pm$ 0.06 [A08]	$M_\odot$
Stellar radius $R_\ast$	$0.906^{\rm + 0.026}_{- 0.027}$	0.902 $\pm$ 0.018 [A08]	$R_\odot$
Stellar density $\rho_*$	$1.288^{\rm + 0.035}_{- 0.033}$	$1.327 \pm 0.006$ [A08]	$\rho_\odot$
u₁	$0.346^{\rm + 0.014}_{- 0.015}$	$0.41 \pm 0.03$ [A08]
u₂	$0.220 \pm 0.032$	$0.06 \pm 0.03$ [A08]
Planet mass $M_{\rm p}$	$3.47 \pm 0.22$	3.31 $\pm$ 0.16 [A08]	M_J
Planet radius $R_{\rm p}$	$1.466 ^{\rm + 0.042}_{- 0.044}$	1.465 $\pm$ 0.029 [A08]	R_J
Planet density $\rho_{\rm p}$	$1.105^{\rm +0.060}_{+0.056}$	$1.05 \pm 0.08$ [A08]	$\rho_{J}$

Notes. ^(*) A Bayesian penalty was used for the parameters preceded by an asterisk.

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