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DETECTION OF KOI-13.01 USING THE PHOTOMETRIC ORBIT
The Astronomical Journal ( IF 5.3 ) Pub Date : 2011-11-11 , DOI: 10.1088/0004-6256/142/6/195
Avi Shporer 1, 2 , Jon M. Jenkins 3 , Jason F. Rowe 4 , Dwight T. Sanderfer 4 , Shawn E. Seader 3 , Jeffrey C. Smith 3 , Martin D. Still 5 , Susan E. Thompson 3 , Joseph D. Twicken 3 , William F. Welsh 6
Affiliation  

We use the KOI-13 transiting star-planet system as a test case for the recently developed BEER algorithm, aimed at identifying non-transiting low-mass companions by detecting the photometric variability induced by the companion along its orbit. Such photometric variability is generated by three mechanisms: the beaming effect, tidal ellipsoidal distortion, and reflection/heating. We use data from three Kepler quarters, from the first year of the mission, while ignoring measurements within the transit and occultation, and show that the planet's ephemeris is clearly detected. We fit for the amplitude of each of the three effects and use the beaming effect amplitude to estimate the planet's minimum mass, which results in Mp sin i = 9.2 ± 1.1 M J (assuming the host star parameters derived by Szabo et al.). Our results show that non-transiting star-planet systems similar to KOI-13.01 can be detected in Kepler data, including a measurement of the orbital ephemeris and the planet's minimum mass. Moreover, we derive a realistic estimate of the amplitudes uncertainties, and use it to show that data obtained during the entire lifetime of the Kepler mission of 3.5 years will allow detecting non-transiting close-in low-mass companions orbiting bright stars, down to the few Jupiter mass level. Data from the Kepler Extended Mission, if funded by NASA, will further improve the detection capabilities.

中文翻译:

使用光度轨道检测 KOI-13.01

我们使用 KOI-13 凌日星-行星系统作为最近开发的 BEER 算法的测试案例,旨在通过检测伴星沿其轨道引起的光度变化来识别非凌日低质量伴星。这种光度变化是由三种机制产生的:光束效应、潮汐椭球畸变和反射/加热。我们使用了来自任务第一年的三个开普勒季度的数据,同时忽略了凌日和掩星内的测量,并表明可以清楚地检测到行星的星历。我们拟合了三种效应中每一种的幅度,并使用光束效应幅度来估计行星的最小质量,这导致 Mp sin i = 9.2 ± 1.1 MJ(假设主星参数由 Szabo 等人得出)。我们的结果表明,可以在开普勒数据中检测到类似于 KOI-13.01 的非凌日星行星系统,包括对轨道星历和行星最小质量的测量。此外,我们对幅度不确定性进行了实际估计,并用它来表明在开普勒任务 3.5 年的整个生命周期中获得的数据将允许探测围绕明亮恒星运行的非凌日近距离低质量伴星,低至少数木星质量级别。来自开普勒扩展任务的数据,如果得到美国宇航局的资助,将进一步提高探测能力。并用它来表明在开普勒任务 3.5 年的整个生命周期中获得的数据将允许探测非凌日近距离低质量伴星围绕明亮的恒星运行,低至少数木星质量水平。来自开普勒扩展任务的数据,如果得到美国宇航局的资助,将进一步提高探测能力。并用它来表明在开普勒任务 3.5 年的整个生命周期中获得的数据将允许探测非凌日近距离低质量伴星围绕明亮的恒星运行,低至少数木星质量水平。来自开普勒扩展任务的数据,如果得到美国宇航局的资助,将进一步提高探测能力。
更新日期:2011-11-11
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