2021A&A...656A.117M


Query : 2021A&A...656A.117M

2021A&A...656A.117M - Astronomy and Astrophysics, volume 656A, 117-117 (2021/12-1)

Redshift identification of X-ray-selected active galactic nuclei in the J1030 field: searching for large-scale structures and high-redshift sources.

MARCHESI S., MIGNOLI M., GILLI R., PECA A., BOLZONELLA M., NANNI R., ANNUNZIATELLA M., BALMAVERDE B., BRUSA M., CALURA F., CASSARA L.P., CHIABERGE M., COMASTRI A., CUSANO F., D'AMATO Q., IWASAWA K., LANZUISI G., MARCHESINI D., MORISHITA T., PRANDONI I., ROSSI A., TOZZI P., VIGNALI C., VITO F., ZAMORANI G. and NORMAN C.

Abstract (from CDS):

We publicly release the spectroscopic and photometric redshift catalog of the sources detected with Chandra in the field of the z = 6.3 quasar SDSS J1030+0525. This is currently the fifth-deepest extragalactic X-ray field, and reaches a 0.5-2 keV flux limit of f_0.5 - 2_ = 6 x 10–17 erg s–1 cm–2. Using two independent methods, we measure a photometric redshift for 243 objects, while 123 (51%) sources also have a spectroscopic redshift, 110 of which come from an INAF-Large Binocular Telescope (LBT) Strategic Program. We use the spectroscopic redshifts to determine the quality of the photometric ones, and find it to be in agreement with that of other X-ray surveys which used a similar number of photometric data points. In particular, we measure a sample normalized median absolute deviation of σNMAD = 1.48 x median(||zphot - zspec||/(1 + zspec)) = 0.065. We use these new spectroscopic and photometric redshifts to study the properties of the Chandra J1030 field. We observe several peaks in our spectroscopic redshift distribution between z = 0.15 and z = 1.5, and find that the sources in each peak are often distributed across the whole Chandra field of view. This confirms that X-ray-selected AGNs can efficiently track large-scale structures over physical scales of several megaparsecs. Finally, we computed the Chandra J1030 z > 3 number counts: while the spectroscopic completeness of our sample is limited at high redshift, our results point towards a potential source excess at z >= 4, which we plan to either confirm or reject in the near future with dedicated spectroscopic campaigns.

Abstract Copyright: © ESO 2021

Journal keyword(s): galaxies: Seyfert - large-scale structure of Universe - galaxies: high-redshift - quasars: supermassive black holes - X-rays: galaxies

VizieR on-line data: <Available at CDS (J/A+A/656/A117): table1.dat splist.dat sp/* sedmod/* sedsrc/*>

Status at CDS : All or part of tables of objects will be ingested in SIMBAD with priority 1.

Simbad objects: 128

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Number of rows : 128
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 NAME Chandra Deep Field-South reg 03 32 28.0 -27 48 30           ~ 2001 1
2 NAME Extended Chandra Deep Field South reg 03 32 30.0 -27 48 20           ~ 728 0
3 NAME COSMOS Field reg 10 00 28.60 +02 12 21.0           ~ 2676 0
4 SDSS J102948.97+051841.6 AGN 10 29 48.978 +05 18 41.68           ~ 2 0
5 SDSS J102950.14+051921.7 QSO 10 29 50.146 +05 19 21.70           ~ 6 0
6 SDSS J102953.85+051857.3 AGN 10 29 53.857 +05 18 57.30           ~ 2 0
7 SDSS J102955.09+052319.8 AGN 10 29 55.0973148768 +05 23 19.862317284           ~ 2 0
8 SDSS J102957.72+051837.4 QSO 10 29 57.7216058208 +05 18 37.415909520           ~ 12 0
9 [NGV2020] XID120 EmG 10 30 00.810 +05 19 59.46           ~ 1 0
10 SDSS J103001.38+052718.3 QSO 10 30 01.3832652360 +05 27 18.324664452           ~ 9 0
11 [NGV2020] XID56 EmG 10 30 02.920 +05 24 06.77           ~ 1 0
12 [NGV2020] XID207 Sy2 10 30 04.200 +05 20 02.19           ~ 1 0
13 [NGV2020] XID350 EmG 10 30 05.140 +05 28 33.32           ~ 1 0
14 SDSS J103005.78+052543.8 AGN 10 30 05.7891212592 +05 25 43.801791240           ~ 2 0
15 SDSS J103005.97+053220.9 QSO 10 30 05.9779659096 +05 32 20.895086328           ~ 8 0
16 [NGV2020] XID173 AGN 10 30 06.700 +05 18 29.56           ~ 1 0
17 [NGV2020] XID127 EmG 10 30 06.750 +05 27 21.90           ~ 2 0
18 [NGV2020] XID104 AGN 10 30 06.890 +05 29 42.76           ~ 1 0
19 [NGV2020] XID155 G 10 30 08.020 +05 21 22.99           ~ 1 0
20 [NGV2020] XID118 EmG 10 30 08.230 +05 19 16.83           ~ 1 0
21 [NGV2020] XID85 EmG 10 30 08.550 +05 21 30.34           ~ 1 0
22 [NGV2020] XID53 AGN 10 30 08.800 +05 23 10.18           ~ 1 0
23 [NGV2020] XID141 AGN 10 30 08.950 +05 18 30.44           ~ 1 0
24 [NGV2020] XID119 EmG 10 30 10.470 +05 19 51.29           ~ 1 0
25 [NGV2020] XID178 AGN 10 30 10.740 +05 26 33.64           ~ 1 0
26 [NGV2020] XID49 EmG 10 30 11.500 +05 20 56.44           ~ 1 0
27 [NGV2020] XID74 G 10 30 12.540 +05 31 42.47           ~ 1 0
28 [NGV2020] XID353 EmG 10 30 12.910 +05 20 06.37           ~ 1 0
29 [NGV2020] XID32 AGN 10 30 13.370 +05 26 43.41           ~ 1 0
30 [NGV2020] XID355 EmG 10 30 14.240 +05 30 07.52           ~ 1 0
31 [NGV2020] XID356 EmG 10 30 14.430 +05 23 16.46           ~ 1 0
32 [NGV2020] XID172 AGN 10 30 14.840 +05 32 06.81           ~ 1 0
33 SDSS J103016.32+053421.0 QSO 10 30 16.3301866200 +05 34 21.048217716           ~ 10 0
34 [NGV2020] XID28 AGN 10 30 16.560 +05 26 12.03           ~ 1 0
35 [NGV2020] XID61 Sy2 10 30 18.350 +05 26 33.06           ~ 1 0
36 [NGV2020] XID196 EmG 10 30 18.360 +05 22 32.82           ~ 1 0
37 [NGV2020] XID359 G 10 30 18.850 +05 29 50.67           ~ 1 0
38 SDSS J103018.92+052857.1 AGN 10 30 18.924 +05 28 57.16           ~ 2 0
39 [NGV2020] XID144 EmG 10 30 19.240 +05 23 24.99           ~ 1 0
40 [NGV2020] XID10 AGN 10 30 19.350 +05 23 03.51           ~ 1 0
41 [NGV2020] XID148 EmG 10 30 19.520 +05 22 26.88           ~ 1 0
42 [NGV2020] XID181 G 10 30 20.210 +05 16 59.53           ~ 1 0
43 [NGV2020] XID131 AGN 10 30 20.700 +05 32 24.86           ~ 2 0
44 [NGV2020] XID115 AGN 10 30 20.720 +05 18 42.61           ~ 1 0
45 SDSS J103020.80+052317.8 AGN 10 30 20.802 +05 23 17.85           ~ 2 0
46 [NGV2020] XID17 EmG 10 30 21.040 +05 24 14.99           ~ 1 0
47 [NGV2020] XID19 AGN 10 30 21.400 +05 24 51.04           ~ 1 0
48 [NGV2020] XID140 EmG 10 30 21.810 +05 17 29.49           ~ 1 0
49 [NGV2020] XID51 EmG 10 30 21.820 +05 21 41.25           ~ 1 0
50 [NGV2020] XID156 EmG 10 30 21.910 +05 22 13.89           ~ 1 0
51 [NGV2020] XID5 EmG 10 30 22.190 +05 22 00.79           ~ 1 0
52 [NGV2020] XID16 AGN 10 30 22.680 +05 24 13.42           ~ 1 0
53 [NGV2020] XID41 AGN 10 30 22.680 +05 28 26.00           ~ 2 0
54 [NGV2020] XID190 EmG 10 30 23.040 +05 26 01.34           ~ 1 0
55 [NGV2020] XID105 EmG 10 30 23.470 +05 30 15.51           ~ 1 0
56 [NGV2020] XID3 EmG 10 30 23.770 +05 20 30.23           ~ 1 0
57 [NGV2020] XID111 G 10 30 23.840 +05 18 32.40           ~ 1 0
58 [NGV2020] XID15 EmG 10 30 24.370 +05 23 44.12           ~ 1 0
59 [NGV2020] XID189 AGN 10 30 25.190 +05 24 28.47           ~ 3 0
60 [NGV2020] XID35 AGN 10 30 25.380 +05 27 11.56           ~ 1 0
61 SDSS J103025.38+053321.3 AGN 10 30 25.387 +05 33 21.32           ~ 2 0
62 [NGV2020] XID70 EmG 10 30 25.840 +05 30 20.32           ~ 2 0
63 [NGV2020] XID361 AGN 10 30 26.080 +05 25 19.98           ~ 1 0
64 [NGV2020] XID132 G 10 30 26.080 +05 33 45.88           ~ 1 0
65 [NGV2020] XID73 AGN 10 30 26.600 +05 31 22.36           ~ 1 0
66 [NGV2020] XID22 AGN 10 30 26.660 +05 25 21.85           ~ 1 0
67 [NGV2020] XID27 G 10 30 26.810 +05 26 07.78           ~ 1 0
68 [NGV2020] XID195 EmG 10 30 26.900 +05 22 01.82           ~ 1 0
69 [NGV2020] XID363 EmG 10 30 27.060 +05 25 31.71           ~ 1 0
70 SDSS J103027.09+052455.0 QSO 10 30 27.092 +05 24 55.02   26.15 25.44     ~ 247 0
71 SDSS J103027.79+052643.5 AGN 10 30 27.7964092666 +05 26 43.548225087           ~ 2 0
72 [NGV2020] XID72 EmG 10 30 28.480 +05 31 14.93           ~ 1 0
73 [NGV2020] XID152 EmG 10 30 28.580 +05 27 07.08           ~ 1 0
74 [NGV2020] XID113 AGN 10 30 28.610 +05 18 40.24           ~ 1 0
75 [NGV2020] XID368 EmG 10 30 29.680 +05 25 11.87           ~ 1 0
76 SDSS J103030.07+052105.7 AGN 10 30 30.076 +05 21 05.79       21.49   ~ 3 0
77 [NGV2020] XID23 AGN 10 30 30.250 +05 25 25.22           ~ 1 0
78 [NGV2020] XID197 EmG 10 30 30.860 +05 24 37.92           ~ 1 0
79 [NGV2020] XID101 AGN 10 30 31.320 +05 28 50.30           ~ 1 0
80 [VV2006] J103031.7+052455 QSO 10 30 31.6492057752 +05 24 54.948102624   18.30 18.00     ~ 33 0
81 [NGV2020] XID106 AGN 10 30 31.750 +05 30 52.16           ~ 1 0
82 [NGV2020] XID50 EmG 10 30 31.820 +05 21 39.44           ~ 1 0
83 SDSS J103032.78+051928.8 AGN 10 30 32.784 +05 19 28.80           ~ 2 0
84 [NGV2020] XID108 AGN 10 30 33.800 +05 32 33.64           ~ 1 0
85 SDSS J103033.83+053049.2 AGN 10 30 33.8366374200 +05 30 49.270247280           ~ 2 0
86 [NGV2020] XID154 G 10 30 34.380 +05 20 36.20           ~ 1 0
87 [NGV2020] XID31 AGN 10 30 34.490 +05 26 34.11           ~ 1 0
88 SDSS J103035.06+052704.9 AGN 10 30 35.069 +05 27 04.98           ~ 2 0
89 [NGV2020] XID372 EmG 10 30 35.640 +05 24 24.74           ~ 1 0
90 [NGV2020] XID43 AGN 10 30 35.900 +05 29 17.39           ~ 1 0
91 [NGV2020] XID232 EmG 10 30 37.230 +05 30 01.98           ~ 1 0
92 [NGV2020] XID14 G 10 30 39.030 +05 23 38.95           ~ 1 0
93 [NGV2020] XID159 AGN 10 30 39.230 +05 16 14.94           ~ 1 0
94 [NGV2020] XID26 EmG 10 30 39.810 +05 25 53.16           ~ 1 0
95 [NGV2020] XID203 EmG 10 30 40.230 +05 24 20.36           ~ 1 0
96 [NGV2020] XID75 G 10 30 40.350 +05 32 14.19           ~ 1 0
97 [NGV2020] XID379 EmG 10 30 41.220 +05 18 35.45           ~ 1 0
98 SDSS J103041.36+052202.2 QSO 10 30 41.3680418472 +05 22 02.260464636           ~ 11 0
99 [NGV2020] XID109 EmG 10 30 41.750 +05 16 12.24           ~ 1 0
100 SDSS J103042.51+052220.9 AGN 10 30 42.511 +05 22 20.95           ~ 2 0
101 2MASS J10304311+0523188 EmG 10 30 43.1120644824 +05 23 18.821748984           ~ 2 0
102 [NGV2020] XID235 AGN 10 30 46.260 +05 18 05.27           ~ 1 0
103 [NGV2020] XID95 EmG 10 30 46.530 +05 27 12.54           ~ 1 0
104 [NGV2020] XID83 AGN 10 30 47.870 +05 20 46.09           ~ 1 0
105 [NGV2020] XID201 EmG 10 30 48.120 +05 22 31.17           ~ 1 0
106 [NGV2020] XID188 EmG 10 30 48.260 +05 32 06.45           ~ 1 0
107 SDSS J103048.92+052836.4 AGN 10 30 48.9276050544 +05 28 36.495403104           ~ 2 0
108 [NGV2020] XID122 EmG 10 30 49.910 +05 22 25.26           ~ 1 0
109 SDSS J103050.12+053035.0 AGN 10 30 50.1291515376 +05 30 35.034426396           ~ 2 0
110 [NGV2020] XID55 AGN 10 30 51.250 +05 23 43.95           ~ 1 0
111 [NGV2020] XID81 AGN 10 30 51.680 +05 20 04.10           ~ 1 0
112 SDSS J103052.08+052843.2 AGN 10 30 52.081 +05 28 43.24           ~ 2 0
113 [NGV2020] XID224 EmG 10 30 52.550 +05 27 19.63           ~ 1 0
114 [NGV2020] XID97 EmG 10 30 53.790 +05 27 33.96           ~ 1 0
115 [NGV2020] XID59 AGN 10 30 54.000 +05 24 39.05           ~ 1 0
116 [NGV2020] XID177 G 10 30 54.850 +05 22 55.97           ~ 1 0
117 [NGV2020] XID89 AGN 10 30 54.910 +05 23 56.28           ~ 1 0
118 [NGV2020] XID179 AGN 10 30 55.660 +05 28 13.34           ~ 1 0
119 [NGV2020] XID124 G 10 30 58.160 +05 24 55.50           ~ 1 0
120 [NGV2020] XID126 AGN 10 30 58.460 +05 26 27.97           ~ 1 0
121 [NGV2020] XID92 AGN 10 30 59.290 +05 25 26.36           ~ 1 0
122 [NGV2020] XID175 AGN 10 30 59.960 +05 21 49.36           ~ 1 0
123 [NGV2020] XID236 EmG 10 31 00.430 +05 23 04.02           ~ 1 0
124 [NGV2020] XID88 AGN 10 31 02.410 +05 23 30.28           ~ 1 0
125 SDSS J103103.81+052400.0 AGN 10 31 03.815 +05 24 00.09           ~ 2 0
126 [NGV2020] XID143 G 10 31 05.110 +05 26 28.78           ~ 1 0
127 NAME Lockman Hole reg 10 45 00.0 +58 00 00           ~ 808 0
128 NAME Chandra Deep Field-North reg 12 36.8 +62 13           ~ 648 0

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2023.01.31-01:34:38

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