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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 6.

A comparison of ionization sources detected using just the BPT/VO87 diagrams (left) and our new method using emission-line ratios, kinematics, and spatial information (right). Our 3D classification method is more sensitive at detecting ionization from non-star-forming sources than just emission-line diagnostics alone.

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