The ” missing link ” : a 4 - day period transiting exoplanet around OGLE - TR - 111 ⋆

We report the discovery of a transiting hot Jupiter around OGLE-TR-111, from our radial velocity follow-up of OGLE transiting candidates in Carina. The planet has a mass of 0.53 ± 0.11 M J and a radius of 1.0 +0.13 −0.06 R J. Three transiting exoplanets have already been found among OGLE candidates, all with periods near 1.5 days. The planet presented here, with P = 4.0 days, is the first exoplanet detected by transits with the characteristics of a " normal " hot Jupiter, as found in abundance by radial velocity surveys The radius of OGLE-TR-111b and the scarcity of hot Jupiters detected among OGLE transit candidates tend to indicate that the case of HD209458b, with a radius of 1.4 R J , is exceptional, with most hot Jupiters being smaller.