Danger Zone: Establishing Buffers for Enhanced Classification in BPT Diagrams

arXiv:2512.07975 · astro-ph.GA · Submitted 2025-12-08 · Read on arXiv

astro-ph.GA

Submitted: 2025-12-08

Updated: 2026-10-12

Comments: 28 pages, 14 figures, 6 tables. Published in ApJ

Journal ref: ApJ 998, 273 (2026)

DOI: 10.3847/1538-4357/ae367d

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Accuracy — 1× in this paper · explained in 1 episode
• Velocity Dispersion — 1× in this paper · explained in 2 episodes

Sources

• Probabilistic Autoencoder
• UMAP: Uniform Manifold Approximation and Projection for Dimension Reduction
• Reconstructing and Classifying SDSS DR16 Galaxy Spectra with Machine-Learning and Dimensionality Reduction Algorithms

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