The restless population of bright X-ray sources of NGC 3621

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Volume 689 (September 2024)

A&A, 689 (2024) A217

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Table 2.

X-ray spectral properties of the analysed sources.

Source	Observation	χ²/ν	$N_{H}^{(1)}$ $N_{\mathrm{H}}^{(1)}$	$k T_{soft}^{(2)}$ $kT_{\mathrm{soft}}^{(2)}$	$L_{X, soft}^{(3)}$ $L_{\mathrm{X,soft}}^{(3)}$	$k T_{hard}^{(2)}$ $kT_{\mathrm{hard}}^{(2)}$	$L_{X, hard}^{(3)}$ $L_{\mathrm{X,hard}}^{(3)}$	$L_{X, tot}^{(4)}$ $L_{\mathrm{X,tot}}^{(4)}$
X2	CXO1	0.75	2.4 ± 0.8	0.25 ± 0.06	3.2 ± 0.8	1.0 ± 0.1	3.6 ± 0.4	6.5 ± 0.3
	XMM1	1.13	0.6 ± 0.1	0.43 ± 0.03	1.70 ± 0.08	2.8 ± 0.3	3.24 ± 0.07	4.97 ± 0.09
	XMM2	1.07	0.8 ± 0.1	0.37 ± 0.11	0.2 ± 0.1	1.57 ± 0.02	7.9 ± 0.1	8.13 ± 0.07

X3	XMM1	1.01	< 0.1	0.31 ± 0.01	1.07 ± 0.01	1.9 ± 0.1	1.32 ± 0.06	6.6 ± 0.1
X3	XMM2	1.01	< 0.1	0.31 ± 0.01	0.57 ± 0.01	1.9 ± 0.1	0.89 ± 0.02	3.83 ± 0.06

X4	XMM2	0.92	0.4 ± 0.2	0.39 ± 0.07	0.21 ± 0.04	1.3 ± 0.1	0.38 ± 0.04	0.59 ± 0.01

X6	XMM1	1.02	< 5.9	0.28 ± 0.03	0.08 ± 0.02	2.1 ± 0.3	0.31 ± 0.04	0.4 ± 0.1
X6	XMM2	1.02	< 5.9	0.28 ± 0.03	0.063 ± 0.008	2.1 ± 0.3	0.19 ± 0.02	0.3 ± 0.1

Notes. ⁽¹⁾Intrinsic absorption in units of 10²¹ cm⁻², the upper limits are reported at a 3σ level. ⁽²⁾Temperature of the soft and hard thermal components in keV. ⁽³⁾X-ray luminosity of the soft and hard thermal components in the 0.3–10 keV band in units of 10³⁹ erg/s. ⁽⁴⁾Total X-ray luminosity in the 0.3-10 keV band in units of 10³⁹ erg/s.

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