STELLA谱线不透明度处理对超新星光变曲线的影响
The influence of line opacity treatment in STELLA on supernova light curves
摘要：
我们系统地探讨了线不透明度处理对超新星光变曲线的影响。我们发现，重要的是要考虑散射和吸收（即模仿荧光效应的热化）的线不透明度。我们探讨了热化程度对三种主要类型的超新星的影响：Ia型，II型特殊，II型高原。为此，我们使用辐射转移代码STELLA和分析宽带光变曲线的背景下进行的模拟与光谱合成代码ARTIS和在上下文中观察到的超新星的每一种类型的几个例子。我们发现，在辐射流体动力学代码STELLA中，吸收和散射之间的比值的合理范围是（0.8-1）：（0.2-0），即推荐的热化参数为0.9。
英文摘要：
We systematically explore the effect of the treatment of line opacity on supernova light curves. We find that it is important to consider line opacity for both scattering and absorption (i.e. thermalisation which mimics the effect of fluorescence.) We explore the impact of degree of thermalisation on three major types of supernovae: Type Ia, Type II-peculiar, and Type II-plateau. For that we use radiative transfer code STELLA and analyse broad-band light curves in the context of simulations done with the spectral synthesis code ARTIS and in the context a few examples of observed supernovae of each type. We found that the plausible range for the ratio between absorption and scattering in the radiation hydrodynamics code STELLA is (0.8-1):(0.2-0), i.e. the recommended thermalisation parameter is 0.9.
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