Angular momentum transport by internal gravity waves - IV. Wave generation by surface convection zone, from the pre-main sequence to the early-AGB in intermediate mass stars
Angular momentum transport by internal gravity waves - IV. Wave generation by surface convection zone, from the pre-main sequence to the early-AGB in intermediate mass stars
复制标题
内部重力波的角动量传输 - IV。
DOI：
--
复制
发表时间：
2008
期刊：
影响因子：
--
通讯作者：
C. Charbonnel
中科院分区：
文献类型：
--
作者：
S. Talon;C. Charbonnel
上下文这是第四次在一系列的文件，处理角动量运输的内部重力波在恒星内部。目标。在这里，我们想研究波在其他演化阶段而不是主序列中的潜在作用。方法.我们研究了一个$3\，M_\odot $ Population I模型从主序前到AGB早期阶段的演化，并研究了波是否会导致角动量重新分布和/或元素在外部对流区边界的扩散.结果我们发现，虽然表面对流区产生的波可以安全地忽略这样一个星星在主序星，它不是后来的演化阶段的情况。特别是，内波的角动量输运在亚巨星分支的末端和早期AGB阶段可能是非常重要的。波浪引起的化学品混合预计在早期AGB阶段。
Context. This is the fourth in a series of papers that deal with angular momentum transport by internal gravity waves in stellar interiors. Aims. Here, we want to examine the potential role of waves in other evolutionary phases than the main sequence. Methods. We study the evolution of a $3\,M_\odot$ Population I model from the pre-main sequence to the early-AGB phase and examine whether waves can lead to angular momentum redistribution and/or element diffusion at the external convection zone boundary. Results. We find that, although waves produced by the surface convection zone can be ignored safely for such a star during the main sequence, it is not the case for later evolutionary stages. In particular, angular momentum transport by internal waves could be quite important at the end of the sub-giant branch and during the early-AGB phase. Wave-induced mixing of chemicals is expected during the early-AGB phase.