Dual-component stellar assembly histories in local elliptical galaxies via MUSE

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Table 4.

Mean mass and light-weighted stellar populations properties listing the stellar metallicities, ages, and formation times, τ₅₀ and τ₉₀.

Mean mass-weighted stellar populations
Galaxy	Comp	[M/H]	Age (Gyr)	τ₅₀ (Gyr)	τ₉₀ (Gyr)

J020536	single	0.063 ± 0.009	12.91 ± 0.180	13.42 ± 0.266	11.90 ± 1.138
	inner	0.138 ± 0.006	13.06 ± 0.164	13.50 ± 0.315	12.11 ± 0.894
	outer	−0.067 ± 0.021	10.69 ± 0.297	11.41 ± 0.902	8.28 ± 0.827

J205050	single	0.174 ± 0.004	13.61 ± 0.116	13.96 ± 0.063	13.17 ± 0.408
	inner	0.245 ± 0.004	13.80 ± 0.099	14.00 ± 0.025	13.55 ± 0.387
	outer	−0.426 ± 0.043	8.83 ± 0.553	9.26 ± 1.247	6.71 ± 0.905

J225546	single	0.035 ± 0.011	12.19 ± 0.200	12.81 ± 0.489	10.57 ± 1.125
	inner	0.132 ± 0.007	13.03 ± 0.222	13.50 ± 0.250	12.09 ± 0.826
	outer	−0.130 ± 0.024	12.13 ± 0.347	12.83 ± 0.565	10.41 ± 1.080


Mean light-weighted stellar populations

Galaxy	Comp	[M/H]	Age (Gyr)	τ₅₀ (Gyr)	τ₉₀ (Gyr)

J020536	single	0.005 ± 0.042	12.25 ± 0.349	13.44 ± 0.355	11.86 ± 1.610
	inner	0.121 ± 0.006	13.03 ± 0.207	13.47 ± 0.345	12.06 ± 0.860
	outer	−0.222 ± 0.019	9.73 ± 0.492	10.73 ± 0.751	6.77 ± 1.394

J205050	single	0.166 ± 0.003	13.58 ± 0.143	13.94 ± 0.045	13.15 ± 0.453
	inner	0.239 ± 0.004	13.77 ± 0.112	14.00 ± 0.015	13.55 ± 0.378
	outer	−0.624 ± 0.029	8.87 ± 0.617	8.97 ± 1.093	7.25 ± 1.395

J225546	single	−0.031 ± 0.012	13.12 ± 0.347	13.57 ± 0.226	12.18 ± 1.113
	inner	0.118 ± 0.008	13.55 ± 0.200	13.93 ± 0.137	13.10 ± 0.805
	outer	−0.314 ± 0.024	12.59 ± 0.642	13.55 ± 0.557	10.51 ± 1.584

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