Chemo-dynamics of the stellar component of the Sculptor dwarf galaxy - II. Dynamical properties and dark matter halo density

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Volume 699 (July 2025)

A&A, 699 (2025) A347

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Table 4

Literature results for the logarithm inner slope of the DM halo of Sculptor.

	2-pop	Method	Dataset	Anisotropy	Data	γ flex	Result
B08	YES	Jeans	B08	OM rad(r)	Binned	NO	Both fit, core preferred
W11	YES	Estimator	W09	constant	Discrete	-	$γ = {0.05}_{- 0.51}^{+ 0.39}$ $\gamma=0.05_{-0.51}^{+0.39}$
AE12	YES	DF	B08	rad(r)	Binned	NO	Both fit, core preferred
B13a	NO	Schwar.	W09 & B08	Free	Binned	YES	Unconstrained
B13b	NO	Schwar.	W09 & B08	Free	Binned	NO	Unconstrained
R14	NO	Schwar.	W09	Free	Discrete	YES	Unconstrained
Z16	YES	Axi. Jeans	W09	Constant	Discrete	YES	γ=0.5 ± 0.3
S17	YES	DF	W09/B08	Tang/Rad (r)	Binned	NO	Depends on dataset
K19	NO	Jeans	W09	Free	Binned	NO	Both fit core preferred
R19	NO	Jeans	W09	Free	Binned	YES	$γ = {0.83}_{- 0.25}^{+ 0.30}$ $\gamma=0.83_{-0.25}^{+0.30}$
H20	NO	Axi. Jeans	W09	Constant	Binned	YES	$γ = {0.45}_{- 0.31}^{+ 0.41}$ $\gamma=0.45_{-0.31}^{+0.41}$
P20	NO	DF	I19	Free	Binned	NO	Core
E23	NO	M.L.	W09	-	Discrete	-	Cusp
This work	YES	DF	T23	Free	Discrete	YES	$γ = {0.39}_{- 0.26}^{+ 0.23}$ $\gamma=0.39_{-0.26}^{+0.23}$

Notes. Column 1 lists the literature works. Column 2 indicates whether the authors use a two-population model or assume that all the stars belong a single population. Column 3 lists the mass modeling method used, M.L. stands for machine learning. Column 4 shows the dataset the authors used and indicates whether the datasets were combined (W09 & B08) or each one was used independently (W09/B08). Column 5 lists the assumpsion made on the anisotropy profile, “OM” stands for “Osipkov-Merritt” profile (Osipkov 1979; Merritt 1985), and rad and tang for only radial or only tangential orbits. Column 6 indicates whether the analysis is done on the bases of binned data or discrete data. Column 7 indicates whether the value assume for γ in the potential is flexible or whether the authors only tried different cases and compare them. Finally, in Column 8 we list the result of that work.

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