非均匀膨胀星风共振线形成的三维Monte Carlo辐射转移计算
3-D Monte Carlo radiative transfer calculation of resonance line formation in the inhomogeneous expanding stellar wind
摘要：
我们研究了光学厚团块，非空的团块间介质，团块的发病变化，以及团块内的速度色散对共振线形成的影响。为此，我们开发了一个完整的3-D蒙特卡罗辐射转移（MCRT）代码，能够处理3-D形状的团块和任意的3-D速度场。我们开发的方法使我们能够考虑到密度和速度风的不均匀性的贡献，总的不透明度非常精确。第一次与观测结果的比较表明，3-D密度和速度风的不均匀性有很强的影响，共振线的形成，他们必须占，以获得可靠的质量损失率的测定。
英文摘要：
We study the effects of optically thick clumps, non-void inter-clump medium, variation of the onset of clumping, and velocity dispersion inside clumps on the formation of resonance lines. For this purpose we developed a full 3-D Monte Carlo Radiative Transfer (MCRT) code that is able to handle 3-D shapes of clumps and arbitrary 3-D velocity fields. The method we developed allows us to take into account contributions from density and velocity wind inhomogeneities to the total opacity very precisely. The first comparison with observation shows that 3-D density and velocity wind inhomogeneities have a very strong influence on the resonance line formation, and that they have to be accounted for in order to obtain reliable mass-loss rate determinations.
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