Abstract—

Modeling the outflow of planetary atmospheres is important for understanding the evolution of exoplanet systems and for interpreting their observations. Modern theoretical models of exoplanet atmospheres become increasingly detailed and multicomponent, and this makes difficulties for engaging new researchers in the scope. Here, for the first time, we present the results of testing the gas-dynamic method incorporated in our aeronomic model, which has been proposed earlier. Undertaken tests support the correctness of the method and validate its applicability. For modeling the planetary wind, we propose a new hydrodynamic model equipped with a phenomenological function of heating by stellar UV radiation. The general flow in this model well agrees with results obtained in more detailed aeronomic models. The proposed model can be used for both methodical purposes and testing the gas-dynamic modules of self-consistent chemical-dynamic models of the planetary wind.

中文翻译：

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系外行星大气外流模型对比分析

摘要-

模拟行星大气的流出对于理解系外行星系统的演化和解释它们的观测非常重要。系外行星大气的现代理论模型变得越来越详细和多元，这使得新的研究人员难以参与进来。在这里，我们首次展示了对我们之前提出的航空模型中包含的气体动力学方法的测试结果。进行的测试支持该方法的正确性并验证其适用性。为了模拟行星风，我们提出了一种新的流体动力学模型，该模型配备了恒星紫外线辐射加热的现象学功能。该模型中的一般流程与更详细的航空模型中获得的结果非常吻合。