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

Frederic Pont , Francois Bouchy (1, 2, 3) , Didier Queloz , Nuno C. Santos , Claudio Melo , Michel Mayor , Stephane Udry

1 LAM - Laboratoire d'Astrophysique de Marseille
2 ObsGE - Observatoire Astronomique de l'Université de Genève
3 OHP - Observatoire de Haute-Provence

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.

Domaines: Cosmologie et astrophysique extra-galactique [astro-ph.CO]

Frederic Pont, Francois Bouchy, Didier Queloz, Nuno C. Santos, Claudio Melo, et al.. The "missing link": a 4-day period transiting exoplanet around OGLE-TR-111. Astronomy and Astrophysics - A&A, 2004, 426, pp.15. ⟨hal-00082260⟩