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FASHI DR2: A Catalog of 132 Low-redshift H I 21 cm Absorption Systems

  • Authors: Chuan-Peng Zhang, Ming Zhu, Peng Jiang, Hong Guo, Yizhou Gu, Cheng Cheng, Jin-Long Xu, Nai-Ping Yu, Xiao-Lan Liu, Bo Zhang

Chuan-Peng Zhang et al 2026 The Astrophysical Journal Supplement Series 287 .

  • Provider: AAS Journals

Caption: Figure 3.

The rest-frame 1.4 GHz continuum luminosity (upper) of the background sources, the H I column density (middle), and the H I peak optical depth versus redshift (lower) for the 21 cm H I absorbers, including data points from K. Geréb et al. (2015), F. M. Maccagni et al. (2017), S. J. Curran & S. W. Duchesne (2018), and FASHI. In the upper panel, the different lines indicate different 1.4 GHz continuum-flux density.

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