Fast supermassive black hole growth in the SPT2349–56 protocluster at z = 4.3

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Volume 689 (September 2024)

A&A, 689 (2024) A130

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Table 4.

Fractions of X-ray selected AGNs among different galaxy populations in protoclusters, as described in Appendix B.

Protocluster	z	$f_{AGN}^{DSFG}$ $f_{\mathrm{AGN}}^{\mathrm{DSFG}}$	$f_{AGN}^{SED}$ $f_{\mathrm{AGN}}^{\mathrm{SED}}$		$f_{AGN}^{LAE}$ $f_{\mathrm{AGN}}^{\mathrm{LAE}}$		$f_{AGN}^{HAE}$ $f_{\mathrm{AGN}}^{\mathrm{HAE}}$

		spec.	spec.	all	spec.	all	spec.	all
CL 0218.3–0510	1.62	–	–	$0 . 17_{- 0.05}^{+ 0.06}$ $0.17^{+0.06}_{-0.05}$	–	–	–	$0 . 03_{- 0.02}^{+ 0.05}$ $0.03^{+0.05}_{-0.02}$
Spiderweb	2.156	$0 . 14_{- 0.08}^{+ 0.17}$ $0.14^{+0.17}_{-0.08}$	$0 . 50_{- 0.13}^{+ 0.13}$ $0.50^{+0.13}_{-0.13}$	$0 . 14_{- 0.04}^{+ 0.05}$ $0.14^{+0.05}_{-0.04}$	$0 . 19_{- 0.06}^{+ 0.09}$ $0.19^{+0.09}_{-0.06}$	$0 . 09_{- 0.03}^{+ 0.05}$ $0.09^{+0.05}_{-0.03}$	$0 . 17_{- 0.04}^{+ 0.05}$ $0.17^{+0.05}_{-0.04}$	$0 . 13_{- 0.03}^{+ 0.04}$ $0.13^{+0.04}_{-0.03}$
PHz G237.01+42.50	2.16	$0 . 50_{- 0.22}^{+ 0.22}$ $0.50^{+0.22}_{-0.22}$	$0 . 10_{- 0.04}^{+ 0.07}$ $0.10^{+0.07}_{-0.04}$	–	–	–	$0 . 17_{- 0.10}^{+ 0.20}$ $0.17^{+0.20}_{-0.10}$	–
2QZ Cluster	2.23	–	–	–	–	–	–	$0 . 32_{- 0.09}^{+ 0.10}$ $0.32^{+0.10}_{-0.09}$
HS 1700+643	2.30	< 0.36	$0 . 05_{- 0.02}^{+ 0.05}$ $0.05^{+0.05}_{-0.02}$	–	$0 . 07_{- 0.03}^{+ 0.06}$ $0.07^{+0.06}_{-0.03}$	–	$0 . 08_{- 0.05}^{+ 0.11}$ $0.08^{+0.11}_{-0.05}$	–
USS 1558–003	2.53	< 0.19	–	–	–	–	$0 . 04_{- 0.02}^{+ 0.03}$ $0.04^{+0.03}_{-0.02}$	$0 . 02_{- 0.01}^{+ 0.02}$ $0.02^{+0.02}_{-0.01}$
SSA22	3.09	$0 . 50_{- 0.14}^{+ 0.14}$ $0.50^{+0.14}_{-0.14}$	–	$0 . 22_{- 0.07}^{+ 0.09}$ $0.22^{+0.09}_{-0.07}$	–	$0 . 03_{- 0.01}^{+ 0.02}$ $0.03^{+0.02}_{-0.01}$	–	–
DRC	4.002	$0 . 15_{- 0.07}^{+ 0.12}$ $0.15^{+0.12}_{-0.07}$	–	–	–	–	–	–
SPT2349–56	4.3	$0 . 09_{- 0.08}^{+ 0.04}$ $0.09^{+0.04}_{-0.08}$	< 0.36	–	< 0.21	–	–	–

Notes. Uncertainties (upper limits) are at the 68% (90%) confidence level, and have been computed as the Jeffrey Bayesian Intervals for binomial proportions (e.g. Brown et al. 2001).

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