He II emitters at cosmic noon and beyond - Characterising the He II λ1640 emission with MUSE and JWST/NIRSpec

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Volume 702 (October 2025)

A&A, 702 (2025) A3

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Table B3.

He II emitters NIRSpec sample.

	50		22		1141		6666		6700

Line	Flux	Error	Flux	Error	Flux	Error	Flux	Error	Flux	Error
	10⁻²⁰erg/s/cm²		10⁻²⁰erg/s/cm²		10⁻²⁰erg/s/cm²		10⁻²⁰erg/s/cm²		10⁻²⁰erg/s/cm²
[O II] 3729			295.60	20.58	629.06	41.80			29.57	11.91
Hδ 4102	93.09	30.03							53.26	20.87
Hβ 4861	284.66	23.37
[O III] 5007	1823.99	148.41
He I 5877	81.96	29.86
Hα 6563	1140.54	46.12	767.34	55.18	1417.88	73.86			228.58	13.57
[S II] 6717	252.61	63.41	500.95	85.26	970.52	219.01
[S II] 6731	232.53	55.74	498.55	80.88	892.97	172.20
He I 7065							49.13	14.17
$[Ar III]$ $\left[\rm Ar III\right]$ 7138	55.36	22.17
He I 8446							32.42	10.26
[S III] 9068	87.46	23.43	443.55	109.40	722.92	178.28	28.18	6.35
Pa9 9229	312.25	147.74
Pa8 9546	239.83	37.29	346.16	54.54	387.04	72.64	32.45	5.23	31.26	17.42
C I 9850
Paδ 10049	90.76	29.06	480.58	95.55	666.61	208.11	22.89	9.36	28.74	23.72
He I 10830	304.88	38.61	277.28	55.93	335.23	66.09	91.70	6.95
Paγ 10938	135.76	32.20	373.92	76.72			21.89	5.88
Fe II 11128							16.94	13.07
Paβ 12818			265.46	54.86	554.66	129.48

Notes. NIRSpec fluxes, are measured as described in section 2.2.

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