OGLE-TR-3: A possible new transiting planet

被引：24
|
作者：
Dreizler, S
Hauschildt, PH
Kley, W
Rauch, T
Schuh, SL
Werner, K
Wolff, B
机构：
[1] Inst Astron & Astrophys, Abt Astron, D-72076 Tubingen, Germany
[2] Hamburger Sternwarte, D-21029 Hamburg, Germany
[3] Inst Astron & Astrophys, Abt Computat Phys, D-72076 Tubingen, Germany
[4] Dr Remeis Sternwarte, D-96049 Bamberg, Germany
[5] European So Observ, D-85748 Garching, Germany
来源：
ASTRONOMY & ASTROPHYSICS | 2003年 / 402卷 / 02期
关键词：
binaries : eclipsing; stars : individual : OGLE-TR-3; stars; low-mass; brown dwarfs; stars : planetary systems;
D O I：
10.1051/0004-6361:20030281
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Recently, 59 low-luminosity object transits were reported from the Optical Gravitational Lensing Experiment (OGLE). Our follow-up low-resolution spectroscopy of 16 candidates provided two objects, OGLE-TR-3 and OGLE-TR-10, which have companions with radii compatible with those of gas-giant planets. Further high-resolution spectroscopy revealed a very low velocity variation (<500 m s(-1)) of the host star OGLE-TR-3 which may be caused by its unseen companion. An analysis of the radial velocity and light curve results in M < 2.5 M-Jup, R < 1.6 R-Jup, and an orbital separation of about 5 R., which makes it the planet with the shortest period known. This allows to identify the low-luminosity companion of OGLE-TR-3 as a possible new gas-giant planet. If confirmed, this makes OGLE-TR-3 together with OGLE-TR-56 the first extrasolar planets detected via their transit light curves.
引用
收藏
页码：791 / 799
页数：9
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