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Caption: Figure 8.
Half-mass–radius vs. stellar mass of HDF850.1 (red square), compared with those of HST-dark galaxies at z ∼ 4.4 selected from the CEERS JWST program (black hexagons, Pérez-González et al. 2023). The K-dark SMGs at z ∼ 3.4 in AS2UDS sample are also shown as maroon diamonds for comparison, with their sizes measured at 850 μm (i.e., dust continuum; Gullberg et al. 2019; Smail et al. 2021). The dashed line denotes the relation between half-mass radii and stellar masses of star-forming galaxies at z = 2.0–2.5 (Suess et al. 2019), but scaled to z = 5 assuming the ratio of scale factors of (1 + z)−1 at the two redshifts.
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© 2024. The Author(s). Published by the American Astronomical Society.
