The growing database of exoplanets has shown us the statistical characteristics of various exoplanet populations, providing insight towards their origins. Observational evidence suggests that the process by which gas giants are conceived in the stellar disk may be disparate from that of smaller planets. Using NASA’s Exoplanet Archive, we analyzed the relationships between planet mass and stellar metallicity, as well as planet mass and stellar mass for low-mass exoplanets (M_P < 0.13 M_J) orbiting spectral class G, K, and M stars. We performed further uncertainty analysis to confirm that the exponential law relationships found between the planet mass, stellar mass, and the stellar metallicity cannot be fully explained by observation biases alone.

中文翻译：

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重新审视绕GKM类恒星运行的低质量系外行星的行星质量和恒星金属性关系。

不断增长的系外行星数据库向我们展示了各种系外行星种群的统计特征，为他们的起源提供了见识。观测证据表明，在恒星盘中孕育气体巨人的过程可能与较小行星的过程不同。使用NASA的系外行星档案，我们分析了绕质量G，K和M星轨道绕行的低质量系外行星（M _P <0.13 M _J）的行星质量与恒星金属性之间的关系，以及行星质量与恒星质量之间的关系。我们进行了进一步的不确定性分析，以确认仅通过观测偏差无法完全解释行星质量，恒星质量和恒星金属性之间的指数规律关系。