The physical origin of the mass–size relation and its scatter for disk galaxies

Open Access

Fig. 7.

Fiducial j_⋆ − M_⋆ − R_e relation of tiny-halo galaxies (red KDE contours) from the TNG50 simulation. This tight relation is obtained by a surface fitting of the 3D space of j_⋆, M_⋆, and R_e using two mass ranges: log (M_⋆/M_⊙)∈[9.5, 11.5] and ∈[9.0, 9.5]. Halo-subdominated galaxies (gray dots) are also shown for comparison.

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