Extended Data Fig. 1: Line ratio diagrams of the core spectrum.
From: A 100-kiloparsec wind feeding the circumgalactic medium of a massive compact galaxy

In a, the green solid line demarcates the edge of the z = 0 pure star-formation locus63; in both panels, blue long-dashed lines denote the limits of young star photo-ionization64; and in b, the green short-dashed line separates Seyfert galaxies (AGNs) from low-ionization nuclear emission-line regions (LINERs)64. Error bars are 1σ. The red narrow component is consistent with star formation at near-solar metallicity, while the broad, outflowing component is ionized by either an AGN or high-velocity shocks.