Spectroscopic characterization of the protocluster of galaxies around 7C 1756+6520 at z ~ 1.4

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Table 1.

Measured emission-line fluxes.

Name	Lines	Wavelength (Å)	Flux (erg cm⁻² s⁻¹)	FWHM (Å)
AGN1110	Hα	15848.6 ± 0.6	1.4 ± 0.2E–16	12 ± 1
AGN1317	Hβ n + b^b	11740.2 ± 0.6	4.2 ± 0.5E–16	93 ± 1
	[O III]4959 n + b^b	11971 ± 1 .0	1.15 ± 0.5E–16	28 ± 3
	[O III]5007 b^b	12084.8 ± 0.6	1.7 ± 0.3E–16	39 ± 0.6
	[O III]5007 n^b	12094.6 ± 0.6	5.8 ± 0.3E–16	23 ± 1
AGN1317 (M 12)^a	Hα n^b	15861.0 ± 0.6	2.8 ± 0.1E–16	9 ± 2
	[N II]6548	15812.7 ± 0.6	5.2 ± 1.0E–17	9 ± 2
	[N II]6583	15906.9 ± 0.6	9.3 ± 1.0E–17	9 ± 2
	Hα b^b	15851.4 ± 0.6	9.7 ± 0.3E–16	121 ± 1
	[S II]6717	16228.3 ± 0.6	4.4 ± 1.0E–17	9 ± 2
	[S II]6731	16264.5 ± 0.6	2.0 ± 1.0E–17	9 ± 2
AGN1354	Hβ	11753.1 ± 0.9	1.1 ± 0.1E–16	34 ± 2
	Hα	15859.0 ± 0.7	—^c	—
	[N II]6583	15919.1 ± 1.4	—^c	—
7C 1756+6520	Hβ	11737.3 ± 0.7	2.6 ± 0.3E–16	27 ± 1
7C 1756+6520	Hα	15850.06	—^c	—^c
CMC 1	Hβ	11710.0 ± 0.7	2.6 ± 1E–18	12 ± 2
CMC 1	[O III]5007	12027.4 ± 0.2	2.1 ± 0.1E–16	11 ± 1
CMC 2	[O III]5007	12056.0 ± 2.0	8.0 ± 1E–17	40 ± 5
CMC 3	[O III]5007	12050.0 ± 1.0	5.0 ± 1E–17	18 ± 2
CMC 4	[O III]5007	11939.0 ± 0.5	4.5 ± 1E–17	10 ± 1
CMC 5	[O III]5007	12037.0 ± 1.0	4.5 ± 1E–17	10 ± 1
CMC 6	[O III]5007	11991.3 ± 0.5	3.0 ± 1E–17	13 ± 2
CMC 7	Hβ	11780.5 ± 0.5	2.6 ± 1E–17	10 ± 1
CMC 8	[O III]5007	12016.0 ± 0.4	6.0 ± 1E–17	13 ± 2
CMC 9	[O III]5007	12184.6 ± 0.2	7.2 ± 1E–17	15 ± 2
CMC 10	Hβ	11513.0 ± 1.0	8.0 ± 1E–17	15 ± 2
CMC 11	Hβ	11508.4 ± 0.1	1.15 ± 0.1E–16	10 ± 1

Notes.

^(a)

Emission-lines fluxes taken by M 12 (only for AGN1317) because of the short observing time in the H wavelength range of our observations;

^(b)

n = narrow component, b = broad component, n + b = narrow + broad components (when it has not been possible to separate the two components);

^(c)

Hα and [N II]λ lines superposed to sky-emission.

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