Elements in a CCSN (b18.3-high, clipped)

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Distribution of elements in the ejecta of an aspherical core-collapse supernova explosion unfolds. A three-dimensional isosurface model showcases mass fractions of elements, including nickel-56 (red), silicon-28 (green), oxygen-16 (blue), and helium-4 (light blue), just prior to shock breakout (~ 3000 seconds after the explosion) in a three-dimensional view. Isosurfaces of the 10% (lighter color) and 70% (darker color) maximum values for each element are illustrated, with regions clipped to reveal internal structure. This model resulted from an extended study presented in the paper: "Matter Mixing in Aspherical Core-collapse Supernovae: Three-dimensional simulations with Single Star and Binary Merger Progenitor Models for SN 1987A," by Masaomi Ono, Shigehiro Nagataki, Gilles Ferrand, Koh Takahashi, Hideyuki Umeda, Takashi Yoshida, Salvatore Orlando, and Marco Miceli, The Astrophysical Journal, 888 (2020), id. 111. The model corresponds to the left panel of Figure 23, identified as b18.3-high.