Introducing STARDIS: An Open and Modular Stellar Spectral Synthesis Code

Abstract We introduce a new 1D stellar spectral synthesis Python code called stardis . stardis is a modular, open-source radiative transfer code that is capable of spectral synthesis from near-UV to IR for FGK stars. We describe the structure, inputs, features, underlying physics, and assumptions of stardis , as well as the radiative transfer scheme implemented. To validate our code, we show spectral comparisons between stardis and korg with the same input atmospheric structure models, and we also compare qualitatively to phoenix for solar models. We find that stardis generally agrees with korg for solar models on the few-percent level or better, though the codes can diverge in the UV, with more extreme differences in cooler stars. stardis can be found at https://github.com/tardis-sn/stardis , and documentation can be found at https://tardis-sn.github.io/stardis/ .

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Publication Details

Journal
The Astrophysical Journal
Published
2025-08-22
DOI
https://doi.org/10.3847/1538-4357/adee11
Citations
1
Primary Topic
Stellar, planetary, and galactic studies
Type
article
Field-Weighted Citation Impact
1.15

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article

Introducing STARDIS: An Open and Modular Stellar Spectral Synthesis Code

Wolfgang Kerzendorf, Andrew G. Fullard, Tiago M. D. Pereira, Jing Lü et al.
1 citations
The Astrophysical Journal
Stellar, planetary, and galactic studies
1.15
article

Introducing STARDIS: An Open and Modular Stellar Spectral Synthesis Code

Wolfgang Kerzendorf, Andrew G. Fullard, Tiago M. D. Pereira, Jing Lü, J. Shields, Jaladh Singhal, Christopher J. Fontes, C. Vogl, Isaac G. Smith, Ryan Groneck
article en
1 citations

Abstract

Abstract We introduce a new 1D stellar spectral synthesis Python code called stardis . stardis is a modular, open-source radiative transfer code that is capable of spectral synthesis from near-UV to IR for FGK stars. We describe the structure, inputs, features, underlying physics, and assumptions of stardis , as well as the radiative transfer scheme implemented. To validate our code, we show spectral comparisons between stardis and korg with the same input atmospheric structure models, and we also compare qualitatively to phoenix for solar models. We find that stardis generally agrees with korg for solar models on the few-percent level or better, though the codes can diverge in the UV, with more extreme differences in cooler stars. stardis can be found at https://github.com/tardis-sn/stardis , and documentation can be found at https://tardis-sn.github.io/stardis/ .

The Astrophysical JournalVol. 990(1)
California Institute of Technology (US), Los Alamos National Laboratory (US), University of Oslo (NO), Max Planck Institute for Astrophysics (DE), Computational Physics (United States) (US), Infrared Processing and Analysis Center (US), Michigan State University (US)
National Science Foundation, U.S. Department of Energy, Norges Forskningsråd, National Nuclear Security Administration, Los Alamos National Laboratory
Openalex Percentile: Top 17%
Stellar, planetary, and galactic studies
1.15
DOIOpen Access PDFOpenAlex
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