Precise and accurate interpolated stellar oscillation frequencies on the main sequence

TL;DR

This paper demonstrates that interpolating global-mode oscillation frequencies within a grid of stellar models can achieve high precision and accuracy, facilitating detailed stellar modeling using space-based observational data.

Contribution

It introduces a method for interpolating stellar oscillation frequencies in model grids, enabling efficient and accurate fitting of stellar models to observational data.

Findings

Interpolated frequencies are precise near solar models.

Interpolation reduces computational costs for stellar modeling.

Method is validated for main sequence stars.

Abstract

High-quality data from space-based observatories present an opportunity to fit stellar models to observations of individually-identified oscillation frequencies, not just the large and small frequency separations. But such fits require the evaluation of a large number of accurate stellar models, which remains expensive. Here, we show that global-mode oscillation frequencies interpolated in a grid of stellar models are precise and accurate, at least in the neighbourhood of a solar model.