关于反旋构型中的行星系拟合
On fitting planetary systems in counter-revolving configurations
摘要：
在Gayon & Bois（2008）和Gayon et al（2009）中，（i）我们研究了逆行平均运动共振的理论可行性和效率（即两颗行星都处于轨道共振和反向旋转配置），（ii）我们表明逆行共振可以产生有趣的稳定机制，（iii）我们得到了一个与HD73526行星系观测结果相一致的反旋位形的动力学拟合。在本文中，我们提出和分析数据减少假设对八个紧凑的多行星系通过径向速度方法检测的反旋转配置。在每种情况下，我们选择最佳的拟合，从而获得动态稳定的解决方案。反旋转构型的均方根值和卡方值所得数据的减少与反旋转构型的减少具有相同的量级，有时甚至稍好于反旋转构型。最后，这些拟合倾向于表明，在所研究的八个多行星系中，其中六个可以通过涉及反旋转配置的机制来调节。
英文摘要：
In Gayon & Bois (2008) and Gayon etal (2009), (i) we studied the theoretical feasibility and efficiency of retrograde mean motion resonances (i.e. two planets are both in orbital resonance and in counter-revolving configuration), (ii) we showed that retrograde resonances can generate interesting mechanisms of stability, and (iii) we obtained a dynamical fit involving a counter-revolving configuration that is consistent with the observations of the HD73526 planetary system. In the present paper, we present and analyze data reductions assuming counter-revolving configurations for eight compact multi-planetary systems detected through the radial velocity method. In each case, we select the best fit leading to a dynamically stable solution. The resulting data reductions obtained in rms and chi values for counter-revolving configurations are of the same order, and sometimes slightly better, than for prograde configurations. In the end, these fits tend to show that, over the eight studied multi-planetary systems, six of them could be regulated by a mechanism involving a counter-revolving configuration.
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