Extended Data Fig. 7: Rest-frame UV size and luminosity relation.
From: A dusty compact object bridging galaxies and quasars at cosmic dawn
The black and blue circles show the rest-frame UV size measurements in the literature for galaxies49,90 at z > 5.5 and for compact galaxies reported at z ~ 2–3, respectively16,89, but no objects similarly compact and luminous to GNz7q have been identified. The error bar denotes the 1σ measurement uncertainty, and the sources whose errors exceed the measurements are not presented. The dashed line indicates the SFR surface density (ΣSFR) by converting the UV luminosity to SFR111. If the compact UV emission in GNz7q is attributed to the star-forming activity, ΣSFR reaches ≳ 5,000 M⊙ yr−1 kpc−2. Note that the UV luminosity is the observed value, and thus ΣSFR of GNz7q after dust correction will be more extreme in the star-forming scenario.
