Chemical composition and enrichment of the Centaurus cluster core seen by XRISM/Resolve

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Table 2.

Best-fit values and 1σ errors of the Resolve pointing on the Centaurus core.

	SPEXACT v3.08.01				AtomDB v3.0.9
	1T_SPEX	2T_SPEX^( * )	lin-gdem_SPEX	log-gdem_SPEX	1T_Xspec	2T_Xspec	lin-gdem_Xspec	wdem_Xspec
EM₁/norm₁	4.52 ± 0.08	$2 . 5_{- 0.5}^{+ 0.3}$ $2.5_{-0.5}^{+0.3}$	4.99 ± 0.14	4.8 ± 0.09	2.06 ± 0.03	0.89 ± 0.14	2.27 ± 0.05	2.33 ± 0.06
EM₂/norm₂	−	$2 . 2_{- 0.3}^{+ 0.5}$ $2.2_{-0.3}^{+0.5}$	−	−	−	1.29 ± 0.15	−	−
kT₁/kT_mean/kT_W	2.333 ± 0.018	$1 . 64_{- 0.13}^{+ 0.07}$ $1.64_{-0.13}^{+0.07}$	2.18 ± 0.04	2.15 ± 0.03	2.397 ± 0.017	1.49 ± 0.11	2.24 ± 0.04	3.32 ± 0.07
kT₂	−	$2 . 99_{- 0.16}^{+ 0.10}$ $2.99_{-0.16}^{+0.10}$	−	−	−	2.88 ± 0.10	−	−
σ_lin,T/σ_log,T/α_T	−	−	1.11 ± 0.07	0.194 ± 0.011	−	−	1.13 ± 0.07	1.3 ± 0.3
v_bulk, 1	−183 ± 5	−193 ± 17	−185 ± 5	−185 ± 5	−191 ± 4	−205 ± 15	−192 ± 5	−192 ± 5
v_rms, 1	126 ± 7	154 ± 21	130 ± 6	130 ± 7	113 ± 6	158 ± 20	114 ± 6	114 ± 6
v_bulk, 2	−	−180 ± 9	−	−	−	−187 ± 6	−	−
v_rms, 2	−	121 ± 12	−	−	−	103 ± 8	−	−
Fe	1.94 ± 0.06	2.06 ± 0.07	2.05 ± 0.07	2.07 ± 0.07	1.72 ± 0.05	1.82 ± 0.05	1.82 ± 0.05	1.81 ± 0.05
Si/Fe	1.23 ± 0.08	1.03 ± 0.07	1.04 ± 0.07	1.02 ± 0.07	1.25 ± 0.08	1.03 ± 0.07	1.03 ± 0.07	1.05 ± 0.07
S/Fe	1.14 ± 0.06	1.04 ± 0.06	1.04 ± 0.05	1.02 ± 0.05	1.17 ± 0.05	1.07 ± 0.05	1.05 ± 0.05	1.08 ± 0.05
Ar/Fe	0.87 ± 0.05	0.92 ± 0.06	0.92 ± 0.06	0.89 ± 0.05	0.86 ± 0.05	0.93 ± 0.06	0.90 ± 0.05	0.92 ± 0.05
Ca/Fe	1.04 ± 0.06	1.13 ± 0.07	1.13 ± 0.07	1.11 ± 0.06	0.96 ± 0.05	1.04 ± 0.06	1.03 ± 0.06	1.04 ± 0.06
Cr/Fe	1.27 ± 0.20	1.30 ± 0.20	1.31 ± 0.20	1.32 ± 0.20	1.18 ± 0.17	1.18 ± 0.17	1.21 ± 0.17	1.19 ± 0.17
Mn/Fe	1.2 ± 0.3	1.2 ± 0.3	1.2 ± 0.3	1.2 ± 0.3	1.0 ± 0.3	0.9 ± 0.3	1.0 ± 0.3	0.9 ± 0.3
Ni/Fe	1.40 ± 0.17	1.27 ± 0.16	1.25 ± 0.15	1.28 ± 0.16	1.28 ± 0.16	1.15 ± 0.15	1.16 ± 0.15	1.14 ± 0.14

C-stat/d.o.f.	2967/2602	2822/2598	2820/2601	2824/2601	22108/26123	21948/26119	21956/26122	21953/26122

Notes. Measurements are derived from a broad-band fit, for different atomic codes (SPEXACT and AtomDB, respectively available in SPEX and Xspec) and (single-/multi-) temperature models. The SPEX emission measures are given in units of 10⁷¹/m³ and the Xspec normalisations are given in units of 10⁻²/cm⁵. The temperatures kT₁, kT₂, kT_mean, and kT_W are given in keV. The velocities v_bulk, 1, v_rms, 1, v_bulk, 2, and v_rms, 2 are given in km/s. The Fe abundance and X/Fe ratios are given in solar units (Lodders et al. 2009). ^( * ) The 2T model using SPEXACT constitutes our baseline Resolve model.

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