Anatomy of a z = 6 Lyman-α emitter down to parsec scales - Extreme UV slopes, metal-poor regions, and possibly leaking star clusters

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Volume 694 (February 2025)

A&A, 694 (2025) A59

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Table D.1.

Main properties derived from the spectroscopic analysis.

region ID	z_spec	Hα		Hβ+[OIII]		[O III]λ5007	Hβ	Hα/Hβ	R3	Z	σ_[OIII]	log(ξ_ion)
		EW [Å]		EW [Å]		EW [Å]	EW [Å]			[Z_⊙]	[km s⁻¹]	[erg⁻¹Hz]
(1)	(2)	(3)		(4)		(5)	(6)	(7)	(8)	(9)	(10)	(11)
D1 (total)	6.1439	455 ± 26	(361 ± 83)	605 ± 24	(646 ± 93)	384 ± 22	89 ± 7	2.81 ± 0.2	4.1 ± 0.3	$0 . 14_{- 0.06}^{+ 0.11}$ $0.14^{+0.11}_{-0.06}$	27.9 ± 2.5	25.2 (25.2)
D1a	6.1441	938 ± 132	(777 ± 288)	1497 ± 138	(1835 ± 441)	933 ± 125	198 ± 31	2.6 ± 0.34	4.4 ± 0.6	$0 . 11_{- 0.05}^{+ 0.09}$ $0.11^{+0.09}_{-0.05}$	19.1 ± 6.1	25.6 (25.6)
D1bc	6.1438	437 ± 34	(590 ± 119)	529 ± 29	(734 ± 126)	341 ± 26	79 ± 7	3.04 ± 0.29	4.1 ± 0.4	$0 . 14_{- 0.07}^{+ 0.12}$ $0.14^{+0.12}_{-0.07}$	32.0 ± 3.5	25.2 (25.4)
D1d	6.1438	566 ± 59	(580 ± 176)	771 ± 54	(943 ± 205)	472 ± 48	131 ± 15	2.37 ± 0.27	3.4 ± 0.4	$0 . 07_{- 0.03}^{+ 0.04}$ $0.07^{+0.04}_{-0.03}$	22.1 ± 5.1	25.3 (25.3)

T1 (total)	6.1449	1790 ± 322	(2185 ± 634)	2274 ± 278	(2809 ± 862)	1421 ± 253	351 ± 68	2.8 ± 0.32	3.8 ± 0.4	$0 . 05_{- 0.02}^{+ 0.02}$ $0.05^{+0.02}_{-0.02}$	20.0 ± 8.6	25.5 (25.7)
T1_core	6.1450	1013 ± 157	(1304 ± 1164)	1365 ± 144	(1835 ± 1652)	880 ± 132	185 ± 32	3.0 ± 0.36	4.5 ± 0.5	$0 . 11_{- 0.05}^{+ 0.09}$ $0.11^{+0.09}_{-0.05}$	20.9 ± 8.5	25.1 (25.3)

Notes. The reference spectra and relative mask used to extract them are shown in Fig. 2 and in Appendix G. The redshift values listed in column (2) are derived averaging the values found from Hα and [O III]λ5007. For the parameters in columns (3), (4) and (11) the values derived from a NIRCam-only analysis are given within parenthesis for comparison. The metallicities listed in column (9) are derived from the R3 ≡ [O III]λ5007/Hβ indirect tracer, column (8), using the prescription in Eq.1 of Nakajima et al. (2022); the latter is calibrated using the Hβ equivalent width, which we report in column (6) for our regions, as a probe of the ionizing conditions.

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