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首页> 外文期刊>The Astrophysical journal >THE TRANSITING EXTRASOLAR GIANT PLANET AROUND THE STAR OGLE-TR-113
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THE TRANSITING EXTRASOLAR GIANT PLANET AROUND THE STAR OGLE-TR-113

机译：STAR OGLE-TR-113周围的过渡巨大巨型行星

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摘要

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 delected 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)M_(Jup), and a radius of (1.09 +- 0.10)R_(Jup). 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 (P_(orb)= 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, P_(orb) = 1.69 days), these objects appear to form a new class of "very hot Jupiters" that pose very interesting questions for theoretical study.
机译：我们报告了OGLE-TR-113周围一个新的太阳系外行星的独立发现，该行星是光学引力透镜实验的候选恒星。根据2003年在Las Campanas天文台（智利）的麦哲伦Ⅰ号（Baade）望远镜上使用MIKE光谱仪进行的观测，测得了较小的径向速度变化。我们还进行了光曲线分析，结合了新的测光法和现实的物理条件星号的参数。 OGLE-TR-113b的轨道周期仅为1.43天，质量为（1.08±0.28）M_（Jup），半径为（1.09±0.10）R_（Jup）。 Bouchy等人最近的一项独立研究从一年后的观测中获得了类似的参数。 OGLE-TR-113b和先前宣布的OGLE-TR-56b行星的轨道周期（P_（orb）= 1.21天）（以光度法发现的前两天）比3颗近距离巨型行星的明显截断要短得多。在高精度径向速度调查中发现-4天。随着Bouchy等人报道的第三例。 （OGLE-TR-132b，P_（orb）= 1.69天），这些天体似乎形成了新的“非常热的木星”类，为理论研究提出了非常有趣的问题。

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