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A Search for a More Robust Active Galactic Nucleus Classifier Using Machine Learning

  • Authors: Alexander Messick, Vivienne Baldassare

Alexander Messick and Vivienne Baldassare 2026 The Astrophysical Journal 1009 .

  • Provider: AAS Journals

Caption: Figure 2.

A Venn diagram of the galaxies used in the initial datasets for the NSA v0 tests. The colored ovals represent the four sets of galaxies within the NSA v0 catalog: the ADGD, the SDSS DR16Q catalog, BPT AGNs, and low-mass galaxies. The number within an overlapped region depicts the number of galaxies in the union of the respective sets. We add 10,507 galaxies from the NSA v0 catalog that are not in any of these sets.

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