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Beyond BPT: A New Multidimensional Diagnostic Diagram for Classifying Power Sources Tested Using the SAMI Galaxy Survey

  • Authors: Victor D. Johnston, Anne M. Medling, Brent Groves, Lisa J. Kewley, Luca Cortese, Scott Croom, Ángel R. López-Sánchez, Henry Zovaro, Joss Bland-Hawthorn, Julia Bryant, Jon Lawrence, Matt Owers, Samuel Richards, Jesse van de Sande

Victor D. Johnston et al 2023 The Astrophysical Journal 954 .

  • Provider: AAS Journals

Caption: Figure 9.

GAMA 273514, which contains AGN-like ionization. The top row shows BPT/VO87 emission-line diagrams and the bottom row presents spatial maps colored according to the diagnostic directly above it. There is no clear pattern in any of the spatial maps that suggests true ionization from a central AGN, despite the emission-line diagnostics having a large number of AGN-like spaxels.

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