An improved parametric method for evaluating radiative accelerations in stellar interiors

TL;DR

This paper enhances the SVP parametric method for faster computation of radiative accelerations in stellar interiors, extending its applicability to a broader stellar mass range and providing accessible resources.

Contribution

It introduces improvements in preparing SVP tables from atomic databases, extends the method to 1-10 solar mass stars, and offers new accessible tables and codes.

Findings

Extended the SVP method to 1-10 solar mass stars.

Improved the process of preparing SVP tables from databases.

Provided open access to new tables and codes.

Abstract

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.