Leo I: The classical dwarf spheroidal galaxy with the highest dark matter density

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Volume 700 (August 2025)

A&A, 700 (2025) A77

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Table 3

DM and stellar parameters computed from the posterior of P24.

Parameter	1σ
M_dyn/M_★(R_eff)	${6.4}_{- 2.2}^{+ 3.6}$ $6.4_{-2.2}^{+3.6}$
M_dyn/M_★(r_t)	${32.5}_{- 11.0}^{+ 18.2}$ $32.5_{-11.0}^{+18.2}$
M_dyn(R_eff) (10⁷M_⊙)	${2.82}_{- 0.13}^{+ 0.13}$ $2.82_{-0.13}^{+0.13}$
M_dyn(r_t) (10⁷M_⊙)	${18.70}_{- 3.38}^{+ 3.79}$ $18.70_{-3.38}^{+3.79}$
ρ₁₅₀ (10⁷M_⊙ kpc⁻³)	${35.5}_{- 4.7}^{+ 3.8}$ $35.5_{-4.7}^{+3.8}$
r_c (pc)	$72_{- 32}^{+ 40}$ $72_{-32}^{+40}$
γ_{r_infl}	$- {0.16}_{- 0.17}^{+ 0.12}$ $-0.16_{-0.17}^{+0.12}$
γ₁₅₀	$- {0.89}_{- 0.17}^{+ 0.21}$ $-0.89_{-0.17}^{+0.21}$
log D(0.5°) (GeV cm⁻²)	${17.94}_{- 0.25}^{+ 0.17}$ $17.94_{-0.25}^{+0.17}$
log J(0.5°) (GeV² cm⁻⁵)	${18.13}_{- 0.18}^{+ 0.17}$ $18.13_{-0.18}^{+0.17}$

Notes. From top to bottom: dynamical-to-stellar mass ratio within the stellar effective radius, M_dyn/M_★ (R_eff), and within the stellar truncation radius, M_dyn/M_★ (r_t); dynamical mass within the stellar effective radius, M_dyn (R_eff), and within the stellar truncation radius M_dyn(r_t); DM density at 150 pc, ρ₁₅₀; core radius of DM halo, r_c, DM density log slope γ measured at the maximum influence radius of the BH, γr_infl, and at 150 pc, γ₁₅₀; DM decay D factor within 0.5°, log D(0.5°), and DM annihilation J factor within 0.5°, log J(0.5°).

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