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Galactic H II Regions in the LAMOST Medium-Resolution Spectroscopic Survey of Nebulae

  • Authors: Yunning Zhao, Wei Zhang, Lin Ma, Shiming Wen, Tao Jing, Cheng Li, Zheng Zheng, Aiyuan Yang, Shichao Han, Juanjuan Ren, Jianjun Chen, Hong Wu, Yongheng Zhao

Yunning Zhao et al 2026 The Astronomical Journal 172 .

  • Provider: AAS Journals

Caption: Figure 12.

Radial gradients of Te, ne, and ﹩12+\mathrm{log}({\rm{O}}/{\rm{H}})﹩ at different azimuths. The panels from top to bottom show 345° < Az < 360°, 0° < Az < 15°, and 15° < Az < 60°, respectively. Gray plus signs denote H II regions, and black squares represent the median values of binned H II regions, with errors representing the scatters in each bin. The black solid lines show the linear fitting results for the median values.

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