Table 1.
Best-fit parameters for the mass-size-X scaling relations of central disk galaxies in TNG.
| Galaxy properties (X) | Slope (A) | α | Intercept (B) | Dispersion |
|---|---|---|---|---|
| Z⋆ | 0.374 ± 0.004 | 1.099 ± 0.021 | −5.239 ± 0.040 | 0.054 |
| Zgas | 0.490 ± 0.011 | 0.937 ± 0.038 | −6.417 ± 0.098 | 0.129 |
| tform | −0.113 ± 0.005 | 1.638 ± 0.087 | 1.873 ± 0.047 | 0.064 |
| MBH | 0.936 ± 0.010 | 0.613 ± 0.019 | −1.619 ± 0.089 | 0.120 |
| Σ1 (2D) | 1.017 ± 0.008 | 0.829 ± 0.015 | −0.462 ± 0.078 | 0.106 |
| Σ1 (3D) | 1.051 ± 0.010 | 0.871 ± 0.017 | −0.821 ± 0.095 | 0.129 |
Notes. The slope (A), parameter α, and intercept (B) values for star metallicity Z⋆, gas metallicity Zgas, galaxy formation time tform, black hole mass MBH, and stellar density within 1 kpc Σ1 (2D/3D) were obtained through the optimal fitting parameters in Eq. (4). The last column is the dispersion (i.e., the standard deviation of the residuals) of the best-fitted Eq. (4).
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