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arXiv 0706.2976astro-ph
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A型星中多对流带的相互作用

The Interaction Of Multiple Convection Zones In A-type Stars

L. J. Silvers, M. R. E. Proctor

摘要:

A型恒星具有复杂的内部结构,可能存在多个对流区。如果没有充分分离,这些区域将通过位于它们之间的对流稳定区域相互作用。因此,我们有必要问一问,在这些恒星内部存在的典型条件是否使得这些对流区可以被认为是不相交的。在本文中,我们提出了数值模拟的结果,有助于了解如何增加对流不稳定区域之间的距离可能会通过稳定区域,分离它们的相互作用。这对这些恒星内部的混合和运输有着深远的影响。

英文摘要:

A-type stars have a complex internal structure with the possibility of multiple convection zones. If not sufficiently separated, such zones will interact through the convectively stable regions that lie between them. It is therefore of interest to ask whether the typical conditions that exist within such stars are such that these convections zones can ever be considered as disjoint. In this paper we present results from numerical simulations that help in understanding how increasing the distance between the convectively unstable regions are likely to interact through the stable region that separates them. This has profound implications for mixing and transport within these stars.

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