论文标题
常见的信封风洞：现实恒星信封中的适用性和自相似性范围
Common Envelope Wind Tunnel: Range of Applicability and Self-Similarity in Realistic Stellar Envelopes
论文作者
论文摘要
共同的信封演化是一个近距离二进制的传统地层渠道的关键轨道拧紧阶段，是一个多阶段过程，为建立一个完全描述性的预测性理论框架带来了许多挑战。在一种补充全球3D流体动力模型的方法中，我们探索了简化的阻力形式主义的适用性，将局部流体动力学“风隧道”模拟的结果纳入了一个半分析框架中，以使用现实的巨型巨型分支机构库来处理共同的封装动力学动力学相位，这些框架是现实的巨型巨大分支模型，跨越了现实的巨型分支模型。在少数关键的无量纲参数方面，我们表征了广泛的共同包络事件，揭示了阻力形式主义的广泛适用性以及其在大众制度和年龄之间的自相似性质。讨论了由全球二元性能和局部结构数量产生的局限性，以及为这种形式主义的一般规定应用的机会。
Common envelope evolution, the key orbital tightening phase of the traditional formation channel for close binaries, is a multistage process that presents many challenges to the establishment of a fully descriptive, predictive theoretical framework. In an approach complementary to global 3D hydrodynamical modeling, we explore the range of applicability for a simplified drag formalism that incorporates the results of local hydrodynamic "wind tunnel" simulations into a semi-analytical framework in the treatment of the common envelope dynamical inspiral phase using a library of realistic giant branch stellar models across the low, intermediate, and high mass regimes. In terms of a small number of key dimensionless parameters, we characterize a wide range of common envelope events, revealing the broad range of applicability of the drag formalism as well its self-similar nature across mass regimes and ages. Limitations arising from global binary properties and local structural quantities are discussed together with the opportunity for a general prescriptive application for this formalism.
