The Physics of Early Nova Spectra

The Physics of Early Nova Spectra
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早期新星光谱的物理学

DOI:
10.1086/175921
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发表时间:
1995
期刊:
The Astrophysical Journal
影响因子:
--
通讯作者:
E. Baron
E. Baron
中科院分区:
--
文献类型:
--
作者:
P. Hauschildt;S. Starrfield;S. Shore;E. Baron

文献摘要

被引文献

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我们讨论的物理效应是重要的形成早期光谱的新星。新星大气层是光学上厚的,快速膨胀的外壳,具有平坦的密度分布,导致几何上非常扩展的大气层。我们表明,早期新星光谱的性质可以理解的基本模型,并讨论了一些重要的影响,结构和新星大气的发射光谱,例如,线覆盖、NLTE效应和速度场。新星大气的适当建模进行了讨论,我们给出了一些计算细节。
We discuss the physical effects that are important for the formation of the early spectra of novae. Nova atmospheres are optically thick, fast expanding shells with flat density profiles, leading to geometrically very extended atmospheres. We show that the properties of early nova spectra can be understood in terms of this basic model and discuss some important effects that influence the structure and the emitted spectrum of nova atmospheres, e.g., line blanketing, NLTE effects, and the velocity field. The proper modeling of nova atmospheres is discussed and we give some computational details.