Modelling Time-Dependent Diffusion in Am Star Envelopes
Modelling Time-Dependent Diffusion in Am Star Envelopes
复制标题
模拟 Am 星形包络中的时间相关扩散
DOI：
10.1017/s0252921100017899
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发表时间：
1993
期刊：
影响因子：
--
通讯作者：
G. Alecian
中科院分区：
文献类型：
--
作者：
G. Alecian
我们研究了Am星表面对流层下的扩散过程，改进了以往的研究方法。我们现在能够以一种更现实的方式计算恒星在主序上停留期间大量元素浓度的演变。这允许更好地约束不同的属性（质量损失，深度的表面对流区，对流和辐射区之间的过渡）进入一个扩散主导的描述框架中的Am星的建模。
We study the diffusion process occurring just below the superficial convection zone of Am stars, improving the methods used sofar. We are now able to compute, in a more realistic way, the evolution of the concentrations during the stay of the stars on the main sequence for a large number of elements. This allows to better constrain the different properties (mass loss, depth of the superficial convection zone, transition between convection and radiative zone) entering the modelling of Am stars in the framework of a diffusion-dominant description.