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arXiv 0907.1675astro-ph.EP
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系统:一个测试平台,用于表征太阳系外行星的检测。I.系统控制台软件包

Systemic: A Testbed For Characterizing the Detection of Extrasolar Planets. I. The Systemic Console Package

Stefano Meschiari, Aaron Wolf, Eugenio Rivera, Gregory Laughlin, Steve Vogt, Paul Butler

摘要:

我们提出了系统的控制台,一个新的所有功能于一体的,通用的软件包的分析和组合多参数拟合多普勒径向速度(RV)和过境定时观测。我们给出了在控制台中实现的计算算法的概述,并描述了为简化行星系的表征所提供的工具。我们通过分析更新的径向速度数据集的HD 128311行星系的包的能力。HD128311拥有一对行星,它们似乎参与了2:1的平均运动共振。我们表明,动力学配置不能完全确定从目前的数据。我们发现,如果像HD 128311这样的行星系被发现经历凌日,那么自洽的牛顿拟合结合径向速度数据和少量凌日中点的定时测量可以提供对行星动力学状态的立即且大大改进的表征。

英文摘要:

We present the systemic Console, a new all-in-one, general-purpose software package for the analysis and combined multiparameter fitting of Doppler radial velocity (RV) and transit timing observations. We give an overview of the computational algorithms implemented in the Console, and describe the tools offered for streamlining the characterization of planetary systems. We illustrate the capabilities of the package by analyzing an updated radial velocity data set for the HD128311 planetary system. HD128311 harbors a pair of planets that appear to be participating in a 2:1 mean motion resonance. We show that the dynamical configuration cannot be fully determined from the current data. We find that if a planetary system like HD128311 is found to undergo transits, then self-consistent Newtonian fits to combined radial velocity data and a small number of timing measurements of transit midpoints can provide an immediate and vastly improved characterization of the planet's dynamical state.

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