MSG: A software package for interpolating stellar spectra in pre-calculated grids

TL;DR

MSG is a software tool designed to efficiently interpolate stellar spectra within pre-calculated parameter grids, enabling faster spectral analysis without the need for complex simulations.

Contribution

The paper introduces MSG, a new software package that provides multidimensional interpolation of stellar spectra in pre-computed grids, improving efficiency over direct simulation methods.

Findings

Provides accurate interpolation of stellar spectra

Reduces computational time for spectral analysis

Facilitates large-scale stellar population studies

Abstract

While the spectrum of the light emitted by a star can be calculated by simulating the flow of radiation through each layer of the star's atmosphere, this process is computationally expensive. Therefore, it is often far more efficient to pre-calculate spectra over a grid of photospheric parameters, and then interpolate within this grid. MSG (short for Multidimensional Spectral Grids) is a software package that implements this interpolation capability.