The properties of X-ray-selected active galactic nuclei in protoclusters pinpointed by enormous Lyman alpha nebulae

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Volume 701 (September 2025)

A&A, 701 (2025) A158

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Table 2.

Properties of the X-ray detected AGN in the three protoclusters.

Source ID	RA	Dec	Prior	Spec-z	Known AGN?	C_S	C_H	C_F	HR
(a)	(b)	(c)	(d)	(e)	(f)	(g)	(h)	(i)	(l)

Slug
compQSO	0:52:03.24	+1:01:08.60	SMG/LAE	2.2825	Yes	$59 . 6_{- 7.4}^{+ 8.1}$ $59.6_{-7.4}^{+8.1}$	$58 . 3_{- 7.3}^{+ 7.9}$ $58.3_{-7.3}^{+7.9}$	$117 . 9_{- 10.5}^{+ 11.2}$ $117.9_{-10.5}^{+11.2}$	$- 0 . 05_{- 0.27}^{+ 0.28}$ $-0.05_{-0.27}^{+0.28}$
UM287	0:52:02.42	+1:01:29.34	QSO/ALMA	2.2825	Yes	$259 . 6_{- 15.7}^{+ 16.4}$ $259.6_{-15.7}^{+16.4}$	$233 . 9_{- 14.9}^{+ 15.6}$ $233.9_{-14.9}^{+15.6}$	$493 . 3_{- 21.8}^{+ 22.5}$ $493.3_{-21.8}^{+22.5}$	$- 0 . 04_{- 0.27}^{+ 0.28}$ $-0.04_{-0.27}^{+0.28}$

Fabulous

QSO_Fabulous	10:20:10.00	+10:40:02.70	QSO/SMG	3.164	Yes	$158 . 6_{- 12.2}^{+ 12.9}$ $158.6_{-12.2}^{+12.9}$	$181 . 8_{- 13.1}^{+ 13.8}$ $181.8_{-13.1}^{+13.8}$	$340 . 4_{- 18.1}^{+ 18.7}$ $340.4_{-18.1}^{+18.7}$	$0 . 06_{- 0.28}^{+ 0.28}$ $0.06_{-0.28}^{+0.28}$
Fab-21	10:19:58.90	+10:44:54.00	SMG		No	$3 . 6_{- 1.7}^{+ 2.4}$ $3.6_{-1.7}^{+2.4}$	$6 . 3_{- 2.3}^{+ 3.0}$ $6.3_{-2.3}^{+3.0}$	$9 . 9_{- 3.0}^{+ 3.7}$ $9.9_{-3.0}^{+3.7}$	$0 . 04_{- 0.28}^{+ 0.27}$ $0.04_{-0.28}^{+0.27}$
Fab-33	10:20:19.50	+10:39:04.00	SMG		No	< 5.2	$8 . 6_{- 2.7}^{+ 3.4}$ $8.6_{-2.7}^{+3.4}$	$10 . 4_{- 3.0}^{+ 3.7}$ $10.4_{-3.0}^{+3.7}$	> 0.74
Fab-41	10:20:06.20	+10:38:30.00	SMG		No	$4 . 4_{- 1.9}^{+ 2.6}$ $4.4_{-1.9}^{+2.6}$	$10 . 1_{- 3.0}^{+ 3.7}$ $10.1_{-3.0}^{+3.7}$	$15 . 6_{- 3.8}^{+ 4.5}$ $15.6_{-3.8}^{+4.5}$	$0 . 16_{- 0.28}^{+ 0.26}$ $0.16_{-0.28}^{+0.26}$
QSO2	10:20:09.56	+10:40:05.30	QSO	3.158	Yes	$16 . 7_{- 3.9}^{+ 4.5}$ $16.7_{-3.9}^{+4.5}$	$16 . 8_{- 3.9}^{+ 4.6}$ $16.8_{-3.9}^{+4.6}$	$33 . 6_{- 5.6}^{+ 6.2}$ $33.6_{-5.6}^{+6.2}$	$- 0 . 01_{- 0.27}^{+ 0.28}$ $-0.01_{-0.27}^{+0.28}$

J0819

QSO_J0819	08:19:40.60	+8:23:58.00	QSO	3.213	Yes	$671_{- 25.9}^{+ 25.9}$ $671_{-25.9}^{+25.9}$	$695_{- 26.4}^{+ 26.4}$ $695_{-26.4}^{+26.4}$	$1366_{- 36.9}^{+ 36.9}$ $1366_{-36.9}^{+36.9}$	$0 . 06_{- 0.27}^{+ 0.27}$ $0.06_{-0.27}^{+0.27}$
J0819-24	08:19:21.00	+8:20:56.00	SMG		No	$4 . 1_{- 1.9}^{+ 2.6}$ $4.1_{-1.9}^{+2.6}$	$19 . 2_{- 4.3}^{+ 4.9}$ $19.2_{-4.3}^{+4.9}$	$23 . 4_{- 4.8}^{+ 5.4}$ $23.4_{-4.8}^{+5.4}$	$0 . 42_{- 0.26}^{+ 0.21}$ $0.42_{-0.26}^{+0.21}$
J0819-16	08:19:43.87	+8:23:51.74	SMG		No	$3 . 5_{- 1.7}^{+ 2.4}$ $3.5_{-1.7}^{+2.4}$	< 4.8	$4 . 9_{- 2.2}^{+ 2.8}$ $4.9_{-2.2}^{+2.8}$	< 0.25
J0819-2	08:19:37.23	+8:23:05.76	SMG	3.208	No	$13 . 5_{- 3.4}^{+ 4.1}$ $13.5_{-3.4}^{+4.1}$	$20 . 3_{- 4.3}^{+ 4.9}$ $20.3_{-4.3}^{+4.9}$	$33 . 9_{- 5.6}^{+ 6.2}$ $33.9_{-5.6}^{+6.2}$	$0 . 12_{- 0.29}^{+ 0.27}$ $0.12_{-0.29}^{+0.27}$

Notes. Columns: (a) Name; (b,c) coordinates; (d) type of prior source; (e) spectroscopic redshift; (f) previous information on the AGN nature of the source; (g, h, i) net counts in the soft, hard, and full bands, with 1σ errors; (l) hardness ratios for the X-ray AGN in the three protoclusters.

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