M Dwarf Singles and Multis Have Dissimilar Metallicities Indicating Different Origins

arXiv:2609.27013 · astro-ph.EP, astro-ph.SR · Submitted 2026-09-22 · Read on arXiv

astro-ph.EP, astro-ph.SR

Submitted: 2026-09-22

Updated: 2026-09-22

Code: https://github.com/lyx12311/GPgyro

Terminology

• Abundance — 56× in this paper · explained in 1 episode
• Metallicity — 52× in this paper · explained in 3 episodes
• APOGEE Stellar Parameter and Chemical Abundances Pipeline — 2× in this paper
• Core — 2× in this paper · explained in 2 episodes
• Bayesian Framework — 1× in this paper · explained in 3 episodes
• Generative Model — 1× in this paper · explained in 2 episodes
• Hierarchical Framework — 1× in this paper · explained in 2 episodes
• Latent Representation — 1× in this paper · explained in 2 episodes
• Latent Representations — 1× in this paper · explained in 3 episodes

Sources

• The Cannon 2: A data-driven model of stellar spectra for detailed chemical abundance analyses
• The NASA Exoplanet Archive and Exoplanet Follow-up Observing Program: Data, Tools, and Usage
• SDSS-V: Pioneering Panoptic Spectroscopy
• Composable Effects for Flexible and Accelerated Probabilistic Programming in NumPyro
• No Metallicity Correlation Associated with the Kepler Dichotomy
• The Nineteenth Data Release of the Sloan Digital Sky Survey

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