Clumpiness of galaxies revealed in the near-infrared with COSMOS-Web - Substructures at 1 < z < 4 and their link to stellar mass and star formation

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Table 3.

Measurements of the shape of substructures.

	Clump	Moderately large	Extended
Circularity	$0 . 52_{- 0.20}^{+ 0.20}$ $0.52^{+0.20}_{-0.20}$	$0 . 40_{- 0.17}^{+ 0.19}$ $0.40^{+0.19}_{-0.17}$	$0 . 28_{- 0.12}^{+ 0.19}$ $0.28^{+0.19}_{-0.12}$
Inertia tensor	$2 . 6_{- 1.05}^{+ 2.87}$ $2.6^{+2.87}_{-1.05}$	$3 . 52_{- 1.70}^{+ 4.25}$ $3.52^{+4.25}_{-1.70}$	$3 . 90_{- 1.85}^{+ 5.15}$ $3.90^{+5.15}_{-1.85}$

Notes. Values correspond to the median, 16th, and 84th percentiles. We use two shape measurements. (i) Circularity which is 4π𝒜/𝒫², where 𝒜 is the area of a substructure and 𝒫 is its perimeter. And (ii) the ratio of the eigenvalues of the inertia tensor of the image of the substructures. For each metric, values closer to unity correspond to rounder shapes.

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