CERIDWEN: Fast and Flexible GPU-Accelerated Stellar Population Inference

arXiv:2609.30145 · astro-ph.GA, astro-ph.IM · Submitted 2026-09-24 · Read on arXiv

astro-ph.GA, astro-ph.IM

Submitted: 2026-09-24

Updated: 2026-09-24

Code: https://github.com/Espe13/ceridwen

Terminology

• Metallicity — 94× in this paper · explained in 3 episodes
• Calibration — 27× in this paper · explained in 7 episodes
• Abundance — 19× in this paper · explained in 1 episode
• Dust Attenuation — 14× in this paper · explained in 2 episodes
• Information Gain — 12× in this paper · explained in 2 episodes
• Core — 6× in this paper · explained in 2 episodes
• Degeneracy — 6× in this paper · explained in 3 episodes
• Velocity Dispersion — 6× in this paper · explained in 2 episodes
• Aperture — 5× in this paper · explained in 1 episode
• AGN — 4× in this paper · explained in 1 episode
• Benchmark — 4× in this paper · explained in 2 episodes
• Accuracy — 2× in this paper · explained in 1 episode
• Aperture Correction — 2× in this paper · explained in 1 episode
• Computational Tractability — 2× in this paper · explained in 2 episodes
• Consistency — 2× in this paper · explained in 3 episodes
• Modular Components — 2× in this paper · explained in 2 episodes
• Simulation-based Inference — 2× in this paper · explained in 2 episodes
• alpha — 2× in this paper · explained in 1 episode
• Bayesian Inference — 1× in this paper · explained in 5 episodes
• Chebyshev Polynomials — 1× in this paper · explained in 2 episodes
• Computational overhead — 1× in this paper · explained in 2 episodes
• Fidelity — 1× in this paper · explained in 2 episodes
• Generative Model — 1× in this paper · explained in 2 episodes
• Initial Mass Function (IMF) — 1× in this paper · explained in 2 episodes
• Inverse Problem — 1× in this paper · explained in 2 episodes
• JWST Advanced Deep Extragalactic Survey — 1× in this paper
• Population Synthesis — 1× in this paper · explained in 2 episodes
• Robustness — 1× in this paper · explained in 5 episodes
• Simulation-Based Inference (SBI) — 1× in this paper · explained in 3 episodes

Sources

• BlackJAX: Composable Bayesian inference in JAX
• JADES Data Release 4 Paper I: Sample Selection, Observing Strategy and Redshifts of the complete spectroscopic sample
• TensorFlow Distributions
• The No-U-Turn Sampler: Adaptively Setting Path Lengths in Hamiltonian Monte Carlo
• NeuTra-lizing Bad Geometry in Hamiltonian Monte Carlo Using Neural Transport
• Data analysis recipes: Fitting a model to data
• Stellar masses of optically dark galaxies: uncertainty introduced by the attenuation law and star-formation histories
• Euclid Definition Study Report
• Modelling the nebular emission of galaxies across cosmic time with COLT
• JADES Data Release 4 -- Paper II: Data reduction, analysis and emission-line fluxes of the complete spectroscopic sample
• Wide-Field InfrarRed Survey Telescope-Astrophysics Focused Telescope Assets WFIRST-AFTA 2015 Report
• Parallel Nested Slice Sampling for Gravitational Wave Parameter Estimation

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