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The Stellar Abundances and Galactic Evolution Survey (SAGES). V. The First Data Release of the DDO51 Band

  • Authors: Qiqian Zhang, Zhou Fan, Gang Zhao, Kai Xiao, Wei Wang, Hongrui Gu, Jie Zheng, Jingkun Zhao, Chun Li, Yuqin Chen, Haibo Yuan, Haining Li, Kefeng Tan, Yihan Song, Ali Luo, Nan Song, Yujuan Liu, Yaqian Wu, Ali Esamdin, Hubiao Niu, Jinzhong Liu, Guojie Feng, Yu Zhang

Qiqian Zhang et al 2026 The Astrophysical Journal Supplement Series 284 .

  • Provider: AAS Journals

Caption: Figure 12.

Internal photometric precision of SAGES DDO51 derived from 5.26 million pairs of repeated observations. Top: distribution of magnitude differences (Δm) for calibrated stars. The red lines mark the ±1σ envelope, and the blue dashed line shows the median bias. Bottom: single-measurement precision (σint) as a function of magnitude. Dotted lines indicate 1% (10 mmag) and 10% precision levels.

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