In expansion of our recent proposal that the solar system’s evolution occurred in two stages—during the first stage, the gaseous giants formed (via disk instability), and, during the second stage (caused by an encounter with a particular stellar-object leading to “in-system” fission-driven nucleogenesis), the terrestrial planets formed (via accretion)—we emphasize here that the mechanism of formation of such stellar-objects is generally universal and therefore encounters of such objects with stellar-systems may have occurred elsewhere across galaxies. If so, their aftereffects may perhaps be observed as puzzling features in the spectra of individual stars (such as idiosyncratic chemical enrichments) and/or in the structures of exoplanetary systems (such as unusually high planet densities or short orbital periods). This paper reviews and reinterprets astronomical data within the “fission-events framework”. Classification of stellar systems as “pristine” or “impacted” is offered.

中文翻译：

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“系统内”裂变事件：对系外行星和恒星之谜的洞察力？

在我们最近提出的关于太阳系演化发生在两个阶段的提议的扩展中，第一阶段是气态巨星形成（通过盘不稳定性），第二阶段是气态巨星形成（是由于与特定恒星物体相撞而导致的）。 “系统内”裂变驱动的核发生），（通过吸积作用）形成了地球行星。在此我们强调，这种恒星物体的形成机制通常是普遍的，因此此类物体与恒星系统的相遇可能发生在其他地方跨星系。如果是这样，他们的后遗症也许可以在个别恒星的光谱（例如特质化学富集）和/或系外行星的结构（例如异常高的行星密度或较短的轨道周期）中被视为令人费解的特征。本文在“裂变事件框架”内回顾并重新解释了天文学数据。提供了将恒星系统分类为“原始”或“受冲击”的系统。