Optical and near-infrared spectroscopy of the black hole transient 4U 1543–47 during its 2021 ultra-luminous state

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Volume 673 (May 2023)

A&A, 673 (2023) A104

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Table A.1.

Equivalent widths and fluxes of the most prominent lines in the two epochs.

Line	λ_o (Å)^a	Equivalent Width		Flux density
		(Å)		(×10⁻¹⁷ erg cm⁻² s⁻¹ Å⁻¹)^c

		Epoch 1	Epoch 2	Epoch 1	Epoch 2
O III–3133	3132.86	0.59 ± 0.06	1.34 ± 0.04	104 ± 11	352 ± 11
He II–3203	3203.14	0.44 ± 0.03	0.37 ± 0.02	105 ± 9	135 ± 8
He I–3313	3313.25	0.26 ± 0.03	0.25 ± 0.02	32 ± 4	49 ± 4
O III–3341	3340.74	0.14 ± 0.02	0.10 ± 0.02	19 ± 3	22 ± 4
O III–3444	3444.10	0.70 ± 0.02	0.83 ± 0.01	112 ± 3	212 ± 4
^b H δ	4101.73	-0.20 ± 0.01	-0.31 ± 0.01	-11.8 ± 0.8	-28.4 ± 1.0
^b H γ	4340.47	-0.79 ± 0.01	-0.59 ± 0.01	-40.1 ± 0.6	-46.7 ± 0.8
He II–4686	4685.75	1.38 ± 0.01	1.53 ± 0.01	120.7 ± 0.6	208.5 ± 0.9
^b H β	4861.33	-0.46 ± 0.01	-0.42 ± 0.01	-26.1 ± 0.4	-36.4 ± 0.6
He II–5411	5411.55	0.27 ± 0.01	0.21 ± 0.01	18.1 ± 0.4	21.6 ± 0.8
^b H α	6562.76	-0.09 ± 0.01	-0.42 ± 0.01	-1.30 ± 0.17	-8.8 ± 0.3
Pa 14	8598.39	0.65 ± 0.01	0.79 ± 0.01	4.60 ± 0.06	8.3 ± 0.2
Pa 13	8665.02	0.98 ± 0.01	0.91 ± 0.01	6.81 ± 0.06	9.3 ± 0.2
Pa 12	8750.47	0.66 ± 0.01	0.71 ± 0.01	3.87 ± 0.06	6.1 ± 0.1
Pa 11	8862.78	1.07 ± 0.01	0.77 ± 0.01	8.17 ± 0.06	8.6 ± 0.1
Pa 10	9014.91	0.77 ± 0.01	1.04 ± 0.02	4.11 ± 0.08	8.0 ± 0.1
Pa 9	9229.01	0.91 ± 0.02	1.86 ± 0.01	3.48 ± 0.07	10.2 ± 0.1
Pa ϵ	9545.97	2.47 ± 0.02	2.40 ± 0.02	18.09 ± 0.14	25.15 ± 0.17
Pa δ	10049.37	2.50 ± 0.02	1.57 ± 0.02	8.74 ± 0.06	8.06 ± 0.08
He II–10124	10123.77	1.01 ± 0.01	1.04 ± 0.01	10.67 ± 0.12	15.96 ± 0.18
He I–10830	10830.17	3.14 ± 0.04	2.81 ± 0.03	11.33 ± 0.14	14.40 ± 0.18
Pa γ	10938.09	2.74 ± 0.07	2.92 ± 0.05	4.62 ± 0.12	7.02 ± 0.11
Pa β	12818.08	2.33 ± 0.05	1.84 ± 0.05	2.48 ± 0.06	2.69 ± 0.08
Br 16	15556.47	2.80 ± 0.03	3.07 ± 0.04	1.74 ± 0.03	2.53 ± 0.03
Br 15	15700.68	1.78 ± 0.05	2.10 ± 0.06	0.80 ± 0.03	1.24 ± 0.03
Br 14	15880.56	2.21 ± 0.05	2.17 ± 0.05	0.89 ± 0.03	1.16 ± 0.03
Br 13	16109.33	1.80 ± 0.05	2.26 ± 0.04	0.72 ± 0.03	1.21 ± 0.03
Br 12	16407.21	2.19 ± 0.05	3.38 ± 0.04	0.76 ± 0.02	1.55 ± 0.02
Br 11	16806.54	1.03 ± 0.05	3.50 ± 0.05	0.35 ± 0.02	1.68 ± 0.03
Br 10	17362.13	8.04 ± 0.05	7.73 ± 0.05	2.29 ± 0.02	2.84 ± 0.02
He I–21126	21125.83	2.56 ± 0.04	0.09 ± 0.05	0.48 ± 0.01	0.020 ± 0.012
Br γ	21661.18	8.87 ± 0.07	9.20 ± 0.07	1.10 ± 0.01	1.44 ± 0.02
He II–21885	21885.00	2.49 ± 0.06	2.49 ± 0.05	0.63 ± 0.02	0.80 ± 0.02

Laboratory wavelength.

Lines strongly affected by the companion star spectrum.

It is important to note that the quoted errors are purely formal and are more likely underestimated because of slit losses due to atmospheric refraction and seeing conditions.

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