| Issue |
A&A
Volume 424, Number 3, September IV 2004
|
|
|---|---|---|
| Page(s) | L31 - L34 | |
| Section | Letters | |
| DOI | https://doi.org/10.1051/0004-6361:200400048 | |
| Published online | 06 September 2004 | |
Letter to the Editor
Accurate radius and mass of the transiting exoplanet OGLE-TR-132b*
1
LAM, Traverse du Siphon, BP8, Les Trois Lucs, 13376 Marseille Cedex 12, France e-mail: Claire.Moutou@oamp.fr
2
Observatoire de Genève, 51 Chemin des Maillettes,1290 Sauverny, Switzerland
Received:
8
July
2004
Accepted:
1
August
2004
The exoplanet OGLE-TR-132b belongs
to the new class of very hot giant planets, together with OGLE-TR-56b
and OGLE-TR-113b, detected by
their transits. Recently, radial velocity measurements provided a planetary
mass estimate for OGLE-TR-132b. The planet parameters, however, were poorly constrained,
because of the very shallow transit in the OGLE light curve.
In this letter, based on
new VLT/FORS2 photometric follow-up of OGLE-TR-132 of unprecedented quality (1.2 mmag relative photometry), we confirm the planetary nature of the orbiting object, and we derive an accurate
measurement of its radius and mass: 1.13 ± 0.08 RJ and 1.19 ± 0.13 MJ. The refined ephemeris of OGLE-TR-132 transits is 
2 453 142.5888
and 
1.689857 days.
Key words: planetary systems / stars: individual: OGLE-TR-132
© ESO, 2004
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