ALMAGAL - VI. The spatial distribution of dense cores during the evolution of cluster-forming massive clumps

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Volume 707 (March 2026)

A&A, 707 (2026) A221

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Table 2

Metrics of the spatial distribution of the ALMAGAL cores: position, sizes, and shape of the distribution.

ALMAGAL_ID	N_cores	RA^a	Dec^a	Offset^a	R_cluster^b	$R_{c l u s t e r}^{p h}$ $Mathematical equation: $R_{{cluster }}^{{ph}}$$ ^b	A^CHc	$A_{n o r m}^{C H}$ $Mathematical equation: $A_{{norm}}^{\mathrm{CH}}$$ ^c	$N_{v}^{H u l l}$ $Mathematical equation: $N_{v}^{{Hull}}$$ ^c	$N_{i n}^{H u l l}$ $Mathematical equation: $N_{{in}}^{{Hull}}$$ ^c	ξ^d	e_CH^d	PA^d
Field	-	deg	deg	arcsec	arcsec	pc	arcsec²	arcsec²	–	–	–	–	degree
AG010.2283–0.2064	9	272.25125	−20.19142	3.10	13.79	1.30 E-01	51.67	93.01	4	5	3.40	5.24	−110
AG010.3226–0.1599	11	272.25671	−20.08653	3.96	13.34	2.26 E-01	130.42	204.94	4	7	2.07	1.37	−31
AG010.6185–0.0314	6	272.28967	−19.76494	2.68	5.96	1.52 E-01	7.17	21.52	4	2	3.95	5.28	−27
AG010.6691–0.2196	5	272.49161	−19.81147	4.96	9.11	1.54 E-01	35.82	179.11	4	1	2.70	2.33	−27
AG010.8851+0.1225	4	272.28314	−19.45659	0.43	2.02	2.64 E-02	2.55	10.22	3	1	2.24	1.95	−12
AG011.0829–0.5311	6	272.99283	−19.59885	3.12	7.44	1.19 E-01	34.28	102.84	4	2	2.25	2.86	56
AG011.3614+0.8017	5	271.89975	−18.71168	3.80	13.76	3.67 E-01	112.73	563.64	4	1	2.30	4.30	−266

Notes. ^(a) Geometric center of the group of cores present in the ALMAGAL core catalog (Coletta et al. 2025) and its offset from the image center, which corresponds to the clump center measured in the Hi-GAL 250 μm maps. ^(b) Cluster angular radius, R_cluster and corresponding linear size, $R_{c l u s t e r}^{p h}$ $Mathematical equation: $R_{{cluster}}^{{ph}}$$ ^(c) Parameters of the convex hull (CH) polygon computed from the core positions: area, A^CH, normalized area according to $A_{n o r m}^{C H} = A^{C H} / (1 - N_{v}^{h u l l} / N_{c o r e s})$ $Mathematical equation: $A_{{norm}}^{\mathrm{CH}}=A^{\mathrm{CH}} /\left(1-N_{v}^{{hull}} / N_{{cores}}\right)$$ from Schmeja & Klessen (2006), number of cores at the CH vertices, $N_{v}^{h u l l}$ $Mathematical equation: $N_{v}^{{hull}}$$ , and inside the polygon, $N_{i n}^{h u l l}$ $Mathematical equation: $N_{in}^{{hull}}$$ . ^(d) Elongation of the cluster: ratio of cluster radius to CH equivalent radius, ξ, and ellipticity e and position angle PA of the best fitting ellipse to the convex hull. The complete version of this table is available at the CDS.

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