An X-ray activity cycle on the young solar-like star ɛ Eridani

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Volume 636 (April 2020)

A&A, 636 (2020) A49

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Table 2

Best-fit spectral parameters of each XMM-Newton EPIC/pn observation of ɛ Eri.

Obs No.	Rev	kT₁	kT₂	kT₃	log EM₁	log EM₂	logEM₃	Flux	L_X	T_av
								[0.2−2 keV]	[0.2−2 keV]
		keV	keV	keV	cm⁻³	cm⁻³	cm⁻³	10⁻¹¹erg cm⁻² s⁻¹	10²⁸erg s⁻¹	keV
1	0507	0.15 ± 0.01	0.33 ± 0.02	0.75 ± 0.02	50.70 ± 0.06	50.83 ± 0.04	50.55 ± 0.04	1.29 ± 0.01	1.58 ± 0.01	0.37 ± 0.02	1.02
2	2775	0.15 ± 0.02	0.33 ± 0.03	0.78 ± 0.05	50.65 ± 0.09	50.81 ± 0.06	50.39 ± 0.08	1.10 ± 0.03	1.35 ± 0.04	0.35 ± 0.03	0.81
3	2858	0.15 ± 0.02	0.34 ± 0.02	0.77 ± 0.04	50.81 ± 0.05	51.01 ± 0.04	50.60 ± 0.05	1.74 ± 0.02	2.13 ± 0.02	0.37 ± 0.02	1.08
4	2957	0.16 ± 0.02	0.33 ± 0.02	0.74 ± 0.04	50.78 ± 0.08	51.00 ± 0.04	50.57 ± 0.06	1.69 ± 0.02	2.06 ± 0.02	0.35 ± 0.02	1.00
5	3042	0.19 ± 0.02	0.36 ± 0.03	0.79 ± 0.03	50.85 ± 0.08	50.87 ± 0.10	50.83 ± 0.04	1.92 ± 0.02	2.35 ± 0.02	0.44 ± 0.03	1.00
6	3133	0.19 ± 0.03	0.33 ± 0.04	0.73 ± 0.03	50.73 ± 0.12	50.83 ± 0.13	50.64 ± 0.05	1.47 ± 0.02	1.80 ± 0.02	0.39 ± 0.05	0.95
7	3244	0.15 ± 0.02	0.32 ± 0.02	0.72 ± 0.04	50.68 ± 0.08	50.95 ± 0.04	50.47 ± 0.06	1.40 ± 0.01	1.72 ± 0.02	0.34 ± 0.02	1.17
8	3316	0.21 ± 0.02	0.36 ± 0.08	0.78 ± 0.03	50.89 ± 0.17	50.85 ± 0.20	50.83 ± 0.05	1.97 ± 0.02	2.41 ± 0.02	0.43 ± 0.05	0.90
9	3408	0.17 ± 0.01	0.34 ± 0.01	0.79 ± 0.01	50.70 ± 0.05	51.03 ± 0.04	50.85 ± 0.02	2.08 ± 0.01	2.55 ± 0.01	0.44 ± 0.02	1.60

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