Probabilistic Stellar Age Estimation for Gaia XP Stars with NGBoost

arXiv:2607.17932 · astro-ph.SR, astro-ph.GA, astro-ph.IM · Submitted 2026-07-20 · Read on arXiv

Xiaokun Hou, Wenbo Wu, Gang Zhao, Haining Li, Jingkun Zhao

astro-ph.SR, astro-ph.GA, astro-ph.IM

Submitted: 2026-07-20

Comments: Accepted to appear in the proceedings of the 9th International Conference on Pattern Recognition and Artificial Intelligence (PRAI 2026). 6 pages, 4 figures; stellar age catalog available online

Code: https://github.com/tubage886/Age-for-Gaia-XP-Stars

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

Terminology

• Abundance — 27× in this paper · explained in 1 episode
• Loss Function — 8× in this paper · explained in 2 episodes
• Metallicity — 2× in this paper · explained in 3 episodes
• Apache Point Observatory Galactic Evolution Experiment — 1× in this paper
• Applicability Domain — 1× in this paper · explained in 1 episode
• Consistency — 1× in this paper · explained in 3 episodes
• Transiting Exoplanet Survey Satellite — 1× in this paper

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