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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 12.

Examples of ionization maps for GAMA 106717, 376478, and 9388000338 (left to right). The relative contribution of each driving power source is shown as a fraction of the total amount of ionization. For galaxies with either AGN- or shock-driven ionization, the corresponding layers are mapped according to the mixing sequence identified by our method. As our method cannot separate ionization sources within a single galaxy, one layer will have no contribution to the total ionization. For galaxies where non-star-forming ionization is detected but we cannot definitively determine between shocks, AGNs, and beam-smearing, a map of negative values is placed in both layers to denote this uncertainty.

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