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Strong [O III] λ5007 Compact Galaxies Identified from SDSS DR16 and Their Scaling Relations

  • Authors: Weiyu Ding, Hu Zou, Xu Kong, Yulong Gao, Fujia Li, Hongxin Zhang, Jiali Wang, Jie Song, Jipeng Sui, Jundan Nie, Suijian Xue, Weijian Guo, Yao Yao, Zhimin Zhou

Weiyu Ding et al 2023 The Astronomical Journal 166 .

  • Provider: AAS Journals

Caption: Figure 2.

Optical diagnostic diagram (BPT diagram) separating our strong [O III]λ5007 compact galaxies into star-forming galaxies in red stars, composite galaxies in green crosses, and AGNs in purple diamonds. The dashed curve is the theoretical separation limit for star-forming galaxies proposed by Kewley et al. (2001), while the solid curve is the classification lower limit for selecting AGNs proposed by Kauffmann et al. (2003).

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