OGLE 2003-BLG-235/MOA 2003-BLG-53: A planetary microlensing event . ,, , , , , , .
OGLE 2003-BLG-235/MOA 2003-BLG-53: A planetary microlensing event . ,, , , , , , .
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DOI：
10.1086/420928
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发表时间：
2004-05-10
影响因子：
4.9
通讯作者：
Yock, PCM
中科院分区：
文献类型：
--
作者：
Bond, IA;Udalski, A;Yock, PCM
我们给出了对不寻常的微透镜事件Ogl2003-BLG-235/MOA 2003-BLG-53的观测结果。在这一事件中，在MOA(天体物理微透镜观测)和OGLE(光学引力透镜实验)测量观测中都观察到了由于单透镜轮廓而导致的光曲线的短期(类似于7天)低幅度偏差。我们发现，对于透镜系统，只能用极端(行星)质量比为0.0039(-07)(+11)的二元微透镜模型来再现观测到的光曲线特征。如果透镜系统包括主序主星，我们推断次星是一颗质量约为1.5木星的行星，轨道半径类似于3AU。
We present observations of the unusual microlensing event OGLE 2003-BLG-235/MOA 2003-BLG-53. In this event, a short-duration (similar to 7 days) low-amplitude deviation in the light curve due to a single-lens profile was observed in both the MOA (Microlensing Observations in Astrophysics) and OGLE ( Optical Gravitational Lensing Experiment) survey observations. We find that the observed features of the light curve can only be reproduced using a binary microlensing model with an extreme (planetary) mass ratio of 0.0039(-07)(+11) for the lensing system. If the lens system comprises a main-sequence primary, we infer that the secondary is a planet of about 1.5 Jupiter masses with an orbital radius of similar to 3 AU.