VLT transit and occultation photometry for the bloated planet CoRoT-1bReport as inadecuate



 VLT transit and occultation photometry for the bloated planet CoRoT-1b


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We present VLT eclipse photometry for the giant planet CoRoT-1b. We observed a transit in the R-band filter and an occultation in a narrow filter centered on 2.09 microns. Our analysis of this new photometry and published radial velocities, in combination with stellar-evolutionary modeling, leads to a planetary mass and radius of 1.07 +0.13,-0.18 M Jup and 1.45 +0.07,-0.13 R Jup, confirming the very low density previously deduced from CoRoT photometry. The large occultation depth that we measure at 2.09 microns 0.278 +0.043,-0.066 % is consistent with thermal emission and is better reproduced by an atmospheric model with no redistribution of the absorbed stellar flux to the night side of the planet.



Author: M. Gillon; B. -O. Demory; A. H. M. J. Triaud; T. Barman; L. Hebb; J. Montalban; P. F. L. Maxted; D. Queloz; M. Deleuil; P. Magain

Source: https://archive.org/







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