Letter to the Editor

The “missing link”: A 4-day period transiting exoplanet around OGLE-TR-111^*

¹ Observatoire de Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland e-mail: frederic.pont@obs.unige.ch
² Laboratoire d'Astrophysique de Marseille, Traverse du Siphon, 13013 Marseille, France
³ Lisbon Observatory, Tapada da Ajuda, 1349-018 Lisboa, Portugal
⁴ ESO, Casilla 19001, Santiago 19, Chile

Received: 9 August 2004
Accepted: 6 September 2004

Abstract

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  M_J and a radius of  R_J. Three transiting exoplanets have already been found among OGLE candidates, all with periods near 1.5 days. The planet presented here, with 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 HD 209458b, with a radius of 1.4 R_J, is exceptional, with most hot Jupiters being smaller.