太阳锂耗尽：基于hydrodynamical模拟的混合研究
天体物理学
2009-10-30 v1
摘要
基于辐射hydrodynamics对星际对流层的建模，已制定出描述对流运动向radiative interior深入渗透（超越Sarzschild边界，overshoot）的扩散方案。该指数型扩散式overshoot方案已成功应用于 AGB 星。本文将其应用于太阳，以确定该额外混合的时间尺度和深度范围，即对流包层基部的diffusive overshoot。我们计算了在向及主序星演化期间锂的消耗。我们发现，由diffusive overshoot引起的缓慢混合过程可能导致太阳主序演化期间锂的显著耗尽。
引用
@article{arxiv.astro-ph/9806310,
title = {Lithium depletion in the sun: a study of mixing based on hydrodynamical simulations},
author = {T. Bloecker and H. Holweger and B. Freytag and F. Herwig and H. -G. Ludwig and M. Steffen},
journal= {arXiv preprint arXiv:astro-ph/9806310},
year = {2009}
}
备注
8 pages including 4 PostScript figures, using spackap.sty, Proc. of the workshop "Solar Composition and its Evolution - From Core to Corona, to appear in Space Science Reviews, also available from http://www.speckle.mpifr-bonn.mpg.de/publications.html