Accurate radius and mass of the transiting exoplanet OGLE-TR-132b

被引：77

作者：

Moutou, C

Pont, F

Bouchy, F

Mayor, M

机构：

[1] LAM, Traverse Siphon, F-13376 Marseille 12, France

[2] Observ Geneva, CH-1290 Sauverny, Switzerland

来源：

ASTRONOMY & ASTROPHYSICS | 2004年 / 424卷 / 03期

关键词：

planetary systems; stars : individual : OGLE-TR-132;

D O I：

10.1051/0004-6361:200400048

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 R-J and 1.19+/-0.13 M-J. The refined ephemeris of OGLE-TR- 132 transits is T-0=2453 142.5888 and P=1.689857 days.

引用

收藏

页码：L31 / L34

页数：4

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