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Stellar Parameters and Chemical Abundances for 20,032 Open Cluster Members from Gaia XP Spectra Using a Boosting Multihead Attention Network

  • Authors: Jingzhen Sun, Yude Bu, Jiangchuan Zhang, Mengmeng Zhang, ShanShan Li, Yuhang Zhang, Ke Wang, Zhenping Yi, Xiaoming Kong, Meng Liu, Minglei Wu

Jingzhen Sun et al 2026 The Astrophysical Journal Supplement Series 285 .

  • Provider: AAS Journals

Caption: Figure 14.

Observational color–magnitude diagrams (MG vs. GBP − GRP) comparing the parent sample of 84,314 cluster members (gray background) with the final high-fidelity application subset of 20,032 stars (blue points). The selection deliberately removes the warm upper main sequence to prevent out-of-distribution inference, while completely preserving the robust cool dwarf and giant populations.

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