Volume 510, February 2010
|Number of page(s)||4|
|Section||Stellar structure and evolution|
|Published online||02 February 2010|
Stellar limb-darkening coefficients for CoRot and Kepler*
Institut d'Astrophysique de Paris, CNRS/UPMC, 98bis
boulevard Arago, 75014 Paris, France
2 Astrophysics Group, School of Physics, University of Exeter, Stocker Road, Exeter EX4 4QL, UK e-mail: firstname.lastname@example.org
Accepted: 11 December 2009
Transiting exoplanets provide unparalleled access to the fundamental parameters of both extrasolar planets and their host stars. We present limb-darkening coefficients (LDCs) for the exoplanet hunting CoRot and Kepler missions. The LDCs are calculated with ATLAS stellar atmospheric model grids and span a wide range of , log g, and metallically [M/H]. Both CoRot and Kepler use wide nonstandard photometric filters, and are producing a large inventory of high-quality transiting lightcurves, sensitive to stellar limb darkening. Comparing the stellar model limb darkening to results from the first seven CoRot planets, we find better fits are found when two model intensities at the limb are excluded in the coefficient calculations. This calculation method can help to avoid a major deficiency present at the limbs of the 1D stellar models.
Key words: stars: atmospheres / planetary systems / binaries: eclipsing
Full Tables 1 and 2 are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (22.214.171.124) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/510/A21
© ESO, 2010
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