Visualization and spectral synthesis of rotationally distorted stars

TL;DR

This paper introduces a semi-empirical method for modeling rapidly rotating stars by constructing distorted geometrical models and integrating stellar properties over their surfaces, addressing limitations of simple spherical models.

Contribution

It presents a novel approach combining geometrical distortion with stellar surface integration to better model fast-rotating stars.

Findings

Demonstrated methodology for modeling distorted stellar geometries

Applied spectral synthesis to distorted star models

Showed improved representation of rapidly rotating stars

Abstract

Simple spherical, non-rotating stellar models are inadequate when describing real stars in the limit of very fast rotation: Both the observable spectrum and the geometrical shape of the star deviate strongly from simple models. We attempt to approach the problem of modeling geometrically distorted, rapidly rotating stars from a new angle: By constructing distorted geometrical models and integrating standard stellar models with varying temperature, gravity, and abundances, over the entire surface, we attempt a semi-empirical approach to modeling. Here we present our methodology, and present simple examples of applications.