Chemo-dynamics of the stellar component of the Sculptor dwarf galaxy - I. Observed properties

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Volume 692 (December 2024)

A&A, 692 (2024) A195

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Table C.3

Best-fit parameters for the global properties of Sculptor’s stellar component in the case of assuming three populations.

Set	Pop	f	ℳ	σ_ℳ	𝒱 [km s⁻¹]	σ_𝒱 [km s⁻¹]	R_h [deg]	ΔBIC
Uncorrected CC	MR	${0.32}_{- 0.03}^{+ 0.04}$ $\[0.32_{-0.03}^{+0.04}\]$	$- {1.41}_{- 0.03}^{+ 0.03}$ $\[-1.41_{-0.03}^{+0.03}\]$	${0.25}_{- 0.02}^{+ 0.02}$ $\[0.25_{-0.02}^{+0.02}\]$	${110.9}_{- 0.4}^{+ 0.4}$ $\[110.9_{-0.4}^{+0.4}\]$	${6.1}_{- 0.3}^{+ 0.4}$ $\[6.1_{-0.3}^{+0.4}\]$	${0.128}_{- 0.007}^{+ 0.007}$ $\[0.128_{-0.007}^{+0.007}\]$
	MP	${0.66}_{- 0.04}^{+ 0.03}$ $\[0.66_{-0.04}^{+0.03}\]$	$- {2.00}_{- 0.02}^{+ 0.02}$ $\[-2.00_{-0.02}^{+0.02}\]$	${0.30}_{- 0.01}^{+ 0.01}$ $\[0.30_{-0.01}^{+0.01}\]$	${110.8}_{- 0.4}^{+ 0.4}$ $\[110.8_{-0.4}^{+0.4}\]$	${10.5}_{- 0.3}^{+ 0.3}$ $\[10.5_{-0.3}^{+0.3}\]$	${0.26}_{- 0.01}^{+ 0.01}$ $\[0.26_{-0.01}^{+0.01}\]$	−69
	Pop 3	${0.018}_{- 0.006}^{+ 0.009}$ $\[0.018_{-0.006}^{+0.009}\]$	$- {2.85}_{- 0.23}^{+ 0.24}$ $\[-2.85_{-0.23}^{+0.24}\]$	${0.53}_{- 0.14}^{+ 0.14}$ $\[0.53_{-0.14}^{+0.14}\]$	$126_{- 3}^{+ 3}$ $\[126_{-3}^{+3}\]$	${8.7}_{- 2.0}^{+ 2.4}$ $\[8.7_{-2.0}^{+2.4}\]$	${1.1}_{- 0.4}^{+ 0.9}$ $\[1.1_{-0.4}^{+0.9}\]$

Corrected CC	MR	${0.33}_{- 0.03}^{+ 0.04}$ $\[0.33_{-0.03}^{+0.04}\]$	$- {1.41}_{- 0.03}^{+ 0.03}$ $\[-1.41_{-0.03}^{+0.03}\]$	${0.25}_{- 0.02}^{+ 0.02}$ $\[0.25_{-0.02}^{+0.02}\]$	${110.7}_{- 0.4}^{+ 0.4}$ $\[110.7_{-0.4}^{+0.4}\]$	${6.2}_{- 0.4}^{+ 0.3}$ $\[6.2_{-0.4}^{+0.3}\]$	${0.127}_{- 0.008}^{+ 0.007}$ $\[0.127_{-0.008}^{+0.007}\]$
	MP	${0.65}_{- 0.04}^{+ 0.03}$ $\[0.65_{-0.04}^{+0.03}\]$	$- {2.00}_{- 0.02}^{+ 0.02}$ $\[-2.00_{-0.02}^{+0.02}\]$	${0.30}_{- 0.01}^{+ 0.01}$ $\[0.30_{-0.01}^{+0.01}\]$	${110.9}_{- 0.4}^{+ 0.4}$ $\[110.9_{-0.4}^{+0.4}\]$	${10.6}_{- 0.3}^{+ 0.3}$ $\[10.6_{-0.3}^{+0.3}\]$	${0.262}_{- 0.010}^{+ 0.010}$ $\[0.262_{-0.010}^{+0.010}\]$	−69
	Pop 3	${0.018}_{- 0.006}^{+ 0.009}$ $\[0.018_{-0.006}^{+0.009}\]$	$- {2.82}_{- 0.24}^{+ 0.24}$ $\[-2.82_{-0.24}^{+0.24}\]$	${0.52}_{- 0.13}^{+ 0.12}$ $\[0.52_{-0.13}^{+0.12}\]$	${125.5}_{- 2.9}^{+ 2.7}$ $\[125.5_{-2.9}^{+2.7}\]$	${8.4}_{- 1.8}^{+ 2.4}$ $\[8.4_{-1.8}^{+2.4}\]$	${1.6}_{- 0.6}^{+ 1.1}$ $\[1.6_{-0.6}^{+1.1}\]$

Corrected MLM	MR	${0.32}_{- 0.03}^{+ 0.04}$ $\[0.32_{-0.03}^{+0.04}\]$	$- {1.41}_{- 0.03}^{+ 0.03}$ $\[-1.41_{-0.03}^{+0.03}\]$	${0.25}_{- 0.02}^{+ 0.02}$ $\[0.25_{-0.02}^{+0.02}\]$	${111.2}_{- 0.4}^{+ 0.4}$ $\[111.2_{-0.4}^{+0.4}\]$	${6.5}_{- 0.3}^{+ 0.3}$ $\[6.5_{-0.3}^{+0.3}\]$	${0.126}_{- 0.007}^{+ 0.007}$ $\[0.126_{-0.007}^{+0.007}\]$
	MP	${0.66}_{- 0.04}^{+ 0.03}$ $\[0.66_{-0.04}^{+0.03}\]$	$- {2.00}_{- 0.02}^{+ 0.02}$ $\[-2.00_{-0.02}^{+0.02}\]$	${0.30}_{- 0.01}^{+ 0.01}$ $\[0.30_{-0.01}^{+0.01}\]$	${110.8}_{- 0.4}^{+ 0.4}$ $\[110.8_{-0.4}^{+0.4}\]$	${10.8}_{- 0.3}^{+ 0.3}$ $\[10.8_{-0.3}^{+0.3}\]$	${0.26}_{- 0.01}^{+ 0.01}$ $\[0.26_{-0.01}^{+0.01}\]$	−69
	Pop 3	${0.017}_{- 0.006}^{+ 0.008}$ $\[0.017_{-0.006}^{+0.008}\]$	$- {2.85}_{- 0.24}^{+ 0.26}$ $\[-2.85_{-0.24}^{+0.26}\]$	${0.51}_{- 0.14}^{+ 0.14}$ $\[0.51_{-0.14}^{+0.14}\]$	${124.8}_{- 2.7}^{+ 2.6}$ $\[124.8_{-2.7}^{+2.6}\]$	${8.3}_{- 1.9}^{+ 2.4}$ $\[8.3_{-1.9}^{+2.4}\]$	${1.26}_{- 0.5}^{+ 0.9}$ $\[1.26_{-0.5}^{+0.9}\]$

Notes. Col. 1 indicates the set of velocities used; Col. 2 lists the population we refer to; Col. 3 indicates fraction of stars belonging to the population; Col 4 lists the mean metallicity; Col. 5 the metallicity dispersion; Col. 6 lists the l.o.s. systemic velocity. Column 7 the v_los dispersion; Col. 8 indicates the half light radius assuming a Plummer number density profile; finally, Col. 9 lists the ΔBIC value with respect the single population model.

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