论文标题

改进的参数方法,用于评估恒星内部辐射加速度

An improved parametric method for evaluating radiative accelerations in stellar interiors

论文作者

Alecian, G., LeBlanc, F.

论文摘要

单值参数(SVP)方法是一种参数方法,它提供了比其他方法快得多的计算辐射加速度的可能性。它已经在几个出色的演化数值代码中实现了大约十年。在本文中,我们描述了我们最近带来的改进,从原子/不透明度数据库中,使用该方法所需的SVP表,以及它们扩展到主序列上更大的恒星质量域(从1到10个太阳能质量)。我们讨论该方法的有效性域。我们还向网站展示了可以在恒星进化代码中自由访问和实施的新表和代码的网站。

The single-valued parameter (SVP) method is a parametric method that offers the possibility of computing radiative accelerations in stellar interiors much faster than other methods. It has been implemented in a few stellar evolution numerical codes for about a decade. In the present paper, we describe improvements we have recently brought in the process of preparing, from atomic/opacity databases, the SVP tables that are needed to use the method, and their extension to a larger stellar mass domain (from 1 to 10 solar mass) on the main-sequence. We discuss the validity domain of the method. We also present the website from where new tables and codes can be freely accessed and implemented in stellar evolution codes.

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