连接发光红新星与公共包层演化之间的差距：复合能与辐射力的作用
Bridging the gap between luminous red novae and common envelope evolution: the role of recombination energy and radiation force
AI总结：
本文提出一种结合氢氦完整复合物理的辐射流体动力学模型，模拟公共包层演化中抛射物的光曲线，并成功拟合AT2019zhd，发现复合能与辐射力对光曲线影响显著。
摘要：
发光红新星（LRNe）及其与公共包层演化（CEE）的联系在天体物理学中仍然难以捉摸。在此，我们提出了一种能够模拟CEE期间抛射物质光曲线的辐射流体动力学模型。该辐射流体动力学模型首次纳入了氢和氦的完整复合物理过程。辐射流体动力学方程使用Guangqi求解。通过不随时间变化的抛射物模拟，我们表明光曲线的峰值归因于辐射主导的抛射物，而延展的平台期由物质主导的抛射物产生。为展示我们模型的能力，我们拟合了AT2019zhd的光曲线。基于观测和标度关系，假设中心质量天体为6M_{\odot}。我们的模型表明，AT2019zhd的抛射物质量在0.04M_{\odot}至0.1M_{\odot}范围内。此外，我们证明复合能和辐射力加速度对光曲线有显著影响，而尘埃形成在峰值和平台阶段的影响有限。
英文摘要：
Luminous red novae (LRNe) and their connection to common envelope evolution (CEE) remain elusive in astrophysics. Here, we present a radiation hydrodynamic model capable of simulating the light curves of material ejected during a CEE. For the first time, the radiation hydrodynamic model incorporates complete recombination physics for hydrogen and helium. The radiation hydrodynamic equations are solved with Guangqi. With time-independent ejecta simulations, we show that the peaks in the light curves are attributed to radiation-dominated ejecta, while the extended plateaus are produced by matter-dominated ejecta. To showcase our model's capability, we fit the light curve of AT2019zhd. The central mass object of $6M_{\odot}$ is assumed based on observations and scaling relations. Our model demonstrates that the ejecta mass of AT2019zhd falls within the range of $0.04M_{\odot}$ to $0.1M_{\odot}$. Additionally, we demonstrate that recombination energy and radiation force acceleration significantly impact the light curves, whereas dust formation has a limited effect during the peak and plateau phases.
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。
