Fig. 7.
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Black hole mass versus stellar mass. Blue stars show our nine C III] emitters with broad Hα emission, compared with 4 < z < 10 AGNs (grey squares; Harikane et al. 2023; Kocevski et al. 2023; Juodžbalis et al. 2026; Wang et al. 2024; Übler et al. 2024; Akins et al. 2025; Kokorev et al. 2023; Larson et al. 2023; Bogdán et al. 2024; Maiolino et al. 2024, full references in the text), a compilation of 2 < z < 7 QSOs (grey cross; treated as upper limits; Tripodi et al. 2024, see references therein), and local scaling relations (dashed grey, solid red and dotted yellow lines, respectively from refs. Kormendy & Ho 2013; Reines & Volonteri 2015; Greene et al. 2020).
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