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arXiv 0908.4056physics.data-anastro-ph.EPastro-ph.IMphysics.space-ph
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系外行星与其宿主恒星之间关系的统计模型

A statistical model for the relation between exoplanets and their host stars

E. Martinez-Gomez, G. J. Babu

摘要:

通过统计技术,提出了一个通用模型来解释2008年6月之前发现的太阳系外行星(或系外行星)与其宿主恒星主要特征之间的关系。主要目标是在一组变量之间建立数学关系,以更好地描述主恒星和行星本身的物理特征。主星的特征是它的距离、年龄、有效温度、质量、金属丰度、半径和星等。系外行星通过其物理参数(半径和质量)和轨道参数(距离、周期、偏心率、倾角和长半轴)来描述。作为第一种方法,我们认为只有系外行星的质量是由其宿主恒星的物理性质决定的。然后通过统计分析验证了所提出的模型。最后,我们讨论了二元模型中因变量的分类行为。

英文摘要:

A general model is proposed to explain the relation between the extrasolar planets (or exoplanets) detected until June 2008 and the main characteristics of their host stars through statistical techniques. The main goal is to establish a mathematical relation among the set of variables which better describe the physical characteristics of the host star and the planet itself. The host star is characterized by its distance, age, effective temperature, mass, metallicity, radius and magnitude. The exoplanet is described through its physical parameters (radius and mass) and its orbital parameters (distance, period, eccentricity, inclination and major semiaxis). As a first approach we consider that only the mass of the exoplanet is being determined by the physical properties of its host star. The proposed model is then validated through statistical analysis. Finally we discuss the categorical behavior of the dependent variable through binary models.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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