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Limits on the orbits of possible exomoons around Kepler giant planets in the habitable zone

机译:限制可居住区的开普勒巨型行星周围可能的膨胀轨道

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Regions of Hill stability were determined using the full three-body theory for the planetary candidates that were found by the Kepler mission to lie in the Habitable Zone of the host star with radii larger than 3 Earth radii. The values obtained give a more accurate assessment of the sphere of influence of a planet than does the Hill radius using the restricted three-body expression. The values given by the two estimates for circular orbits are compared. The variation in the full three-body Hill regions were examined for a variety of possible moon masses and orbital eccentricities and inclinations. It was found that the critical moon planet separation decreased with increased moon orbital eccentricity and inclination but to a far greater extent when the planetary orbital eccentricity increased suggesting they would lie inside the Roche limit and are unlikely to have formed or exist now. The angular separation of the moon and planet and the radial velocity amplitudes of the planets likely to be observed are also affected. This is important for future observations and missions. It was also found that the giant planets in the habitable zone lie in a narrow band that can be fitted by a linear regression relation between log(10) (Planet luminosity) and log(10) (Planet temperature) with a slope of 3.34.
机译:利用了通过开普勒任务发现的行星候选人的全球候选人的全行星候选地区确定了山坡稳定性的地区,以躺在宿主恒星的可居住区,以大于3个地球半径。所获得的值给出了使用限制的三体表达式的山半径的行星影响范围的更准确评估。比较了两个圆形轨道估计给出的值。为各种可能的月桂群和轨道偏心和倾斜度检查了全部三体山地区的变化。有发现,临界月球行星分离随着月球轨道偏心和倾斜度增加而降低,但在行星轨道偏心增加时,暗示暗示它们会在罗氏限制内部的内部,而且现在不太可能形成或存在。月亮和行星的角度分离以及可能被观察到的行星的径向速度振幅也受到影响。这对未来的观察和任务非常重要。还发现,可居住区域中的巨大行星位于窄带中,可以通过Log(10)(行星亮度)和Log(Planet温度)之间的线性回归关系来装配,具有3.34的斜率。

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