The transiting extrasolar giant planet around the star OGLE-TR-113

Maciej Konacki, Guillermo Torres, Dimitar D. Sasselov, Grzegorz Pietrzyński, Andrzej Udalski, Saurabh Jha, Maria Teresa Ruiz, Wolfgang Gieren, Dante Minniti

Research output: Contribution to journalArticlepeer-review

99 Citations (Scopus)


We report the independent discovery of a new extrasolar transiting planet around OGLE-TR-113, a candidate star from the Optical Gravitational Lensing Experiment. Small radial velocity variations have been detected based on observations conducted with the MIKE spectrograph on the Magellan I (Baade) telescope at the Las Campanas Observatory (Chile) during 2003. We have also carried out a light-curve analysis incorporating new photometry and realistic physical parameters for the star. OGLE-TR-113b has an orbital period of only 1.43 days, a mass of (1.08 ± 0.28)MJup, and a radius of (1.09 ± 0.10)RJup. Similar parameters have been obtained very recently in an independent study by Bouchy et al., from observations taken a year later. The orbital period of OGLE-TR-113b and the previously announced planet OGLE-TR-56b (Porb = 1.21 days) - the first two found photometrically - are much shorter than the apparent cutoff of close-in giant planets at 3-4 day periods found in high-precision radial velocity surveys. Along with a third case reported by Bouchy et al. (OGLE-TR-132b, Porb = 1.69 days), these objects appear to form a new class of "very hot Jupiters" that pose very interesting questions for theoretical study.

Original languageEnglish
Pages (from-to)L37-L40
JournalAstrophysical Journal
Issue number1 II
Publication statusPublished - 1 Jul 2004


  • Line: profiles
  • Planetary systems
  • Stars: evolution
  • Stars: individual (OGLE-TR-113)
  • Techniques: radial velocities

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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