2008A&A...482..483T

Query : 2008A&A...482..483T

2008A&A...482..483T - Astronomy and Astrophysics, volume 482483-498 (2008/5-1)

Cluster analyses of gigahertz-peaked spectrum sources with self-organising maps.

TORNIAINEN I., TORNIKOSKI M., TURUNEN M., LAINELA M., LAEHTEENMAEKI A., HOVATTA T., MINGALIEV M.G., ALLER M.F. and ALLER H.D.

Abstract (from CDS):

Gigahertz-peaked spectrum (GPS) sources and high frequency peakers (HFPs) are among the smallest of active galactic nuclei currently believed to represent the earliest phases in the evolution of extragalactic radio sources. Recently there has been evidence of contamination by other types of radio sources among the GPS and HFP samples, but the confirmed GPS sources or HFPs also seem to form a very heterogeneous population. We study the statistical clustering of the GPS sources and the HFPs by taking as many source parameters as possible to find homogeneous groups among the sources. We expect the clustering to give us insight into the physical parameters that play a role in different source populations. We have collected a sample of 206 GPS sources and HFPs from the literature and gathered a massive database of various source properties, such as the redshift, the size, the polarization, the magnitudes, and the properties of the radio continuum. To visualize and to cluster these multidimensional data we used self-organising maps (SOM), which are neural networks trained by an unsupervised algorithm. We have classified the sources with an auxiliary classification to trace the locations of different types of radio continuum spectra on the map. The sources form distinctive clusters on the map, which is supported by the accordant organisation of the non-numerical parameters not used in the analysis, such as the radio morphology and the optical identification. Our results confirm that the blazars contaminating the GPS and the HFP samples are physically different from the genuine GPS sources and HFPs, and they should be excluded from the samples. The genuine GPS sources form various clusters, which indicates the existence of different subpopulations, besides the expected galaxy-quasar dualism.

Abstract Copyright: ∼

Journal keyword(s): galaxies: active - galaxies: quasars: general - radio continuum: galaxies

VizieR on-line data: <Available at CDS (J/A+A/482/483): table.dat refs.dat>

Simbad objects: 207

goto Full paper

goto View the references in ADS

Number of rows : 207
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 QSO J0003+2129 Bla 00 03 19.35000596 +21 29 44.5083164   21.005 20.580 19.650   ~ 49 1
2 QSO B0002+0507 BLL 00 05 20.2155845040 +05 24 10.802758572   16.56 16.21 16.26   ~ 188 1
3 NVSS J002127+731241 rG 00 21 27.37516745 +73 12 41.9310797           ~ 37 1
4 Gopal 0019-000 rG 00 22 25.52 -00 16 19.4           ~ 7 0
5 PKS 0022-42 rG 00 24 42.98990924 -42 02 03.9490020   22       ~ 67 1
6 ICRF J002914.2+345632 Sy2 00 29 14.24247204 +34 56 32.2470345   20.2       ~ 145 1
7 ICRF J003732.1+080813 Bz? 00 37 32.19718344 +08 08 13.0569095       22.31   ~ 26 1
8 QSO B0039+230 Bla 00 42 04.54516583 +23 20 01.0619642       19.40   ~ 127 1
9 QSO B0048-09 BLL 00 50 41.3172421464 -09 29 05.210474100 16.74 16.39 16.22 16.14   ~ 480 2
10 NVSS J010813-120050 Sy1 01 08 13.19 -12 00 47.3     19.0     ~ 11 1
11 QSO B0108+388 Bla 01 11 37.31680 +39 06 28.1039     22 22.000   ~ 266 1
12 ICRF J011638.0+242253 Bz? 01 16 38.06766282 +24 22 53.7245654       21.90   ~ 20 0
13 Z 502-27 rG 01 19 35.00087601 +32 10 50.0619670   16 14.5     ~ 249 1
14 PKS 0144+209 Rad 01 46 58.78375705 +21 10 24.3843485           ~ 27 1
15 QSO B0153+744 BLL 01 57 34.9650498168 +74 42 43.225049844   16 16.0 16.7   ~ 217 1
16 QSO B0201+113 Bla 02 03 46.65705710 +11 34 45.4094619   19.5 19.5 19.41   ~ 216 1
17 PKS 0204-306 rG 02 06 43.23419280 -30 24 58.3519320           ~ 10 1
18 ICRF J020713.5+841119 Bla 02 07 13.5086003184 +84 11 19.081417740           ~ 24 1
19 AT20G J021010-221337 Sy2 02 10 10.0494 -22 13 36.719           ~ 18 1
20 87GB 020808.1+040519 AG? 02 10 44.5096 +04 19 35.000           ~ 16 1
21 QSO J0217+0144 Bla 02 17 48.95475095 +01 44 49.6990271   16.74 16.09 18.51 13.29 ~ 455 1
22 6C 021803+354230 BLL 02 21 05.4920852208 +35 56 13.848581904   20.0 20.0 19.60   ~ 603 3
23 QSO B0237-2322 QSO 02 40 08.1743783856 -23 09 15.729012036   16.78 16.63     ~ 516 1
24 NGC 1052 Bla 02 41 04.79849989 -08 15 20.7519527 11.84 11.41 10.47 10.71   ~ 1397 2
25 QSO B0240-217 QSO 02 42 35.90987284 -21 32 25.9348722   17       ~ 58 1
26 6C 024820+430300 Bla 02 51 34.53674154 +43 15 15.8292024     18.0 13.72   ~ 221 1
27 ICRF J031857.8+162832 Sy2 03 18 57.80304294 +16 28 32.6782325     22.0     ~ 212 1
28 4C 05.14 rG 03 23 20.2607119272 +05 34 11.891999568     19     ~ 82 1
29 ICRF J032915.3+351005 BLL 03 29 15.3548503584 +35 10 05.989666620       17.60   ~ 51 1
30 QSO B0332-403 BLL 03 34 13.65448823 -40 08 25.3979928 18.54 18.35 17.87 17.5   ~ 349 1
31 QSO J0357+2319 QSO 03 57 21.60989042 +23 19 53.8251826       18.78   ~ 50 1
32 ICRF J040121.4-292126 Sy2 04 01 21.48378089 -29 21 26.8296680           ~ 28 1
33 QSO B0400+258 Bla 04 03 05.58608082 +26 00 01.5027775     18 19.00   ~ 220 1
34 ATPMN J040734.4-392445 Sy2 04 07 34.452 -39 24 45.70           ~ 12 1
35 AT20G J040758-275705 Sy2 04 07 57.87043 -27 57 06.1105           ~ 16 1
36 4C 76.03 rG 04 10 45.61079426 +76 56 45.3130641   21 22.0 21.200   ~ 164 1
37 ICRF J042805.8+325952 Bla 04 28 05.80875891 +32 59 52.0442031       21.39   ~ 50 1
38 PKS 0428+205 rG 04 31 03.76141386 +20 37 34.2648470   22.174   19.085   ~ 198 1
39 4C -02.17 QSO 04 33 54.88575360 -02 29 56.0195880     19.5     ~ 29 1
40 QSO B0437-454 BLL 04 39 00.85466368 -45 22 22.5631875   20.44 20.6 19.48   ~ 121 1
41 PKS 0439-337 rG 04 41 33.76804669 -33 40 03.9162919           ~ 23 1
42 QSO J0457-2324 Bla 04 57 03.1791422424 -23 24 52.021129572   18.85 18.5 16.56   ~ 435 1
43 ICRF J045720.2-084905 Sy2 04 57 20.21291088 -08 49 05.4834170           ~ 25 1
44 QSO J0459+0229 QSO 04 59 52.05066296 +02 29 31.1765162   18.2 19     ~ 166 2
45 ICRF J050321.1+020304 Sy2 05 03 21.19716454 +02 03 04.6765714   22.500 21.350 20.682   ~ 196 1
46 QSO B0507+179 Bla 05 10 02.36912937 +18 00 41.5815635   20.0 19.0 19.09   ~ 470 1
47 PMN J0519+0848 Rad 05 19 10.81113186 +08 48 56.7346356           ~ 27 1
48 QSO B0528-2505 Bla 05 30 07.9627395840 -25 03 29.900044512   18.17 17.34 17.7   ~ 429 1
49 QSO J0530+13 Bla 05 30 56.41674741 +13 31 55.1494688     20.00 19.35   ~ 1004 1
50 QSO B0537-441 BLL 05 38 50.36155950 -44 05 08.9390233   15.77 16.48 16   ~ 924 2
51 7C 055201.39+394824.00 Bla 05 55 30.80561419 +39 48 49.1649683     18.30 17.5   ~ 527 2
52 ICRF J055652.6-024105 Sy2 05 56 52.62300614 -02 41 05.5163562   20.968   19.533   ~ 36 1
53 NVSS J061024+780136 rG 06 10 24.27936963 +78 01 36.1956277           ~ 26 1
54 ICRF J062518.2+444001 BLL 06 25 18.26537500 +44 40 01.6261460     16.80 18.71   ~ 112 1
55 6C 063338+593631 Bz? 06 38 02.87192548 +59 33 22.2138567           ~ 41 1
56 QSO B0636+68 BLL 06 42 04.2572705040 +67 58 35.620484340     16.46 16.01   ~ 234 1
57 7C 064253.00+445430.00 Bla 06 46 32.02599653 +44 51 16.5901185   19.57 18.49 18.64   ~ 370 1
58 QSO B0646+600 Bla 06 50 31.25435548 +60 01 44.5549353   18.9 18.6 19.65   ~ 125 1
59 Z 204-27 QSO 06 55 10.02472583 +41 00 10.1602339   14.6   9.37   ~ 71 1
60 B3 0700+470 Rad 07 04 09.55828126 +47 00 56.0399312           ~ 27 1
61 NVSS J070648+464756 rG 07 06 48.0722 +46 47 56.187   23.1       ~ 39 1
62 NVSS J071010+455724 Rad 07 10 10.486 +45 57 24.94           ~ 5 1
63 QSO B0710+439 QSO 07 13 38.16413557 +43 49 17.2072102   20.7       ~ 256 0
64 6C 071106+354007 Bla 07 14 24.81748958 +35 34 39.7954831     17 17.7   ~ 213 1
65 [VV98] J072201.2+372229 Bla 07 22 01.2594530208 +37 22 28.634815884     17.91 17.27   ~ 40 1
66 6C 073759+311929 Bla 07 41 10.70330407 +31 12 00.2291151   17.02 16.89 16.322   ~ 468 1
67 4C -06.18 Rad 07 44 21.65636148 -06 29 35.9141444           ~ 56 1
68 QSO B0742+103 Bla 07 45 33.05952486 +10 11 12.6922178     24.00 23.72   ~ 200 1
69 4C -00.28 Bla 07 45 54.08232685 -00 44 17.5399048   18 17.1 16.69   ~ 200 1
70 3C 191 QSO 08 04 47.9671662720 +10 15 23.746977252   18.65 18.40     ~ 295 2
71 QSO B0858-279 BLL 09 00 40.0387763688 -28 08 20.351114232   14.74 17 19.00   ~ 77 1
72 6C 090202+490306 QSO 09 05 27.4638219840 +48 50 49.966312452   17.92 17.71     ~ 91 1
73 BWE 0904+0354 Sy2 09 06 41.045 +03 42 42.59           ~ 23 1
74 PKS 0910+151 rG 09 13 34.980 +14 54 20.05           ~ 14 1
75 PKS 0914+114 rG 09 17 16.383 +11 13 36.85           ~ 25 1
76 4C 39.25 Bla 09 27 03.01394144 +39 02 20.8518067   17.17 17.00 16.486   ~ 1036 1
77 5C 1.12 Bla 09 34 15.7627449144 +49 08 21.731547336   19.57 19.18 19.1   ~ 58 1
78 ICRF J094336.9-081930 LIN 09 43 36.94453828 -08 19 30.8202783   19.401   18.100   ~ 125 2
79 QSO J1016+0513 Bla 10 16 03.13647602 +05 13 02.3413146   20.26 19.83 20   ~ 162 1
80 ICRF J103507.0+562846 Sy2 10 35 07.03998083 +56 28 46.7956247   20.2 21.244 20.200   ~ 205 1
81 6C 103912+811006 Bla 10 44 23.06257022 +80 54 39.4430485     16.5 18.29   ~ 234 1
82 PKS 1042-269 rG 10 44 37.7 -27 12 16           ~ 9 1
83 QSO B1043+066A Bla 10 45 52.7330168808 +06 24 36.451178352   18.24 17.92 17.53   ~ 69 1
84 PKS 1054+004 rG 10 57 15.76744216 +00 12 03.5755040           ~ 28 1
85 QSO B1057-797 BLL 10 58 43.30979475 -80 03 54.1598058   19.08   17.31   ~ 211 1
86 PKS 1100+223 Rad 11 03 23.06763925 +22 03 37.7206496           ~ 33 1
87 PKS 1107+10 rG 11 09 46.071 +10 43 43.56           ~ 23 1
88 QSO B1107-187 QSO 11 10 00.40688649 -18 58 48.7427831   22.44 21.10     ~ 41 0
89 ICRF J112027.8+142054 Sy2 11 20 27.80814059 +14 20 54.9730732   20 20.935 20.100   ~ 175 1
90 [VV98] J112125.1-055356 Bla 11 21 25.10805188 -05 53 56.4399868   19.0       ~ 119 1
91 PKS 1120-274 rG 11 22 56.41004461 -27 42 48.4655652           ~ 25 1
92 QSO J1130-1449 Bla 11 30 07.0523452128 -14 49 27.388021944   17.17 16.90 16 16.97 ~ 739 1
93 4C -00.45 Sy2 11 35 13.029 -00 21 18.75           ~ 25 1
94 NVSS J113555+425844 rG 11 35 55.9948 +42 58 44.648           ~ 33 1
95 QSO B1143-245 Bla 11 46 08.1033450360 -24 47 32.900532360   17.97 18.0 17.20   ~ 129 1
96 Z 186-47 LSB 11 46 43.689 +34 59 55.99   15.5       ~ 17 0
97 6C 114405+541331 Bla 11 46 44.20434354 +53 56 43.0826910   20.5 20.5 19.82   ~ 72 1
98 6C 114618+531124 Bla 11 48 56.5690073664 +52 54 25.323857892   17.19 16.87 16.45   ~ 89 1
99 QSO B1148-171 Bla 11 51 03.2032064976 -17 23 59.841189888   17.9 19.0 18   ~ 50 1
100 ICRF J120321.9+041419 Sy1 12 03 21.9376393920 +04 14 19.081466664   19.22 18.89     ~ 75 1
101 6C 122535+365318 QSO 12 27 58.72552577 +36 35 11.8265176   21.5 21.5     ~ 139 1
102 QSO B1245-197 QSO 12 48 23.89808243 -19 59 18.5899475   21.52 20.5     ~ 145 1
103 8C 1323+799 Bla 13 23 51.56998368 +79 42 51.8471232     21.5 20.38   ~ 46 1
104 4C 32.44 QSO 13 26 16.5142 +31 54 09.522   21.367 19.822 18.882   ~ 181 1
105 NVSS J132650+571207 Rad 13 26 50.57234169 +57 12 06.7458645           ~ 24 1
106 QSO B1333+459 Bla 13 35 21.9623576640 +45 42 38.232772128   18.30 18.22 17.67   ~ 107 1
107 QSO B1334-127 Bla 13 37 39.78278132 -12 57 24.6933925   18.5 19.00 16.22   ~ 540 1
108 ICRF J134551.5-301504 Sy1 13 45 51.51998186 -30 15 04.5925484           ~ 21 1
109 PKS 1345+12 Sy2 13 47 33.36161873 +12 17 24.2398927   19.28 18.44 15.718   ~ 652 2
110 ICRF J135014.0-220441 Sy2 13 50 14.09017738 -22 04 41.0777325           ~ 35 1
111 DW 1349+02 Sy2 13 52 30.697 +02 32 47.28     19     ~ 26 1
112 4C 11.46 Sy2 13 52 56.370 +11 07 07.67   20.0       ~ 20 1
113 QSO B1349-439 Bla 13 52 59.7241134936 -44 13 26.171526972     15.45     ~ 22 2
114 QSO B1354-174 Bla 13 57 06.07420758 -17 44 01.9049954   19 19 18   ~ 93 1
115 NVSS J135740+435400 rG 13 57 40.5870 +43 53 59.772     22.708 20.951   ~ 50 1
116 6C 135734+765743 Bla 13 57 55.37154275 +76 43 21.0509950     19.0 20.27   ~ 134 1
117 ICRF J140028.6+621038 Sy2 14 00 28.64823540 +62 10 38.5885744   22.137 20.373 19.530   ~ 187 1
118 Mrk 668 BLL 14 07 00.39441712 +28 27 14.6901341   16.13 15.35 10.29   ~ 826 3
119 BWE 1410+1349 Bz? 14 12 36.37265047 +13 34 38.1527962           ~ 30 1
120 QSO B1422+2309 BLL 14 24 38.0938 +22 56 00.587   16.77 15.84 14.79   ~ 464 1
121 [PBW92] 1422+231 gLS 14 24 38.09400 +22 56 00.5900   16.77 15.84 14.79   ~ 359 0
122 QSO J1430+1043 Bla 14 30 09.73880343 +10 43 26.8623079     18.5 18.67   ~ 96 1
123 ICRF J143539.9-041455 Sy1 14 35 39.9099617256 -04 14 55.270986900   18.14   17.38   ~ 33 1
124 QSO B1445+101 Bla 14 45 16.46525080 +09 58 36.0727447   18.58 17.78     ~ 408 2
125 AT20G J144719-340914 Sy2 14 47 19.7 -34 09 15           ~ 12 1
126 ICRF J145738.1+074954 Bla 14 57 38.12869548 +07 49 54.7150624   21.26 20.74 19.37   ~ 47 1
127 QSO J1505+0326 Bla 15 05 06.47716039 +03 26 30.8125704   19.02 18.62 17.72   ~ 278 1
128 ICRF J150603.0-091912 QSO 15 06 03.0332285520 -09 19 12.058012992           ~ 27 1
129 QSO B1509+054 Bla 15 11 41.26637844 +05 18 09.2590927   18.49 17.80 13.95   ~ 122 0
130 4C 04.51 rG 15 21 14.41846935 +04 30 21.6366133   18.2       ~ 103 1
131 QSO B1519-273 BLL 15 22 37.67599511 -27 30 10.7855131   18.72 18.5 17.42   ~ 313 1
132 QSO J1526+6650 Bla 15 26 42.8744737248 +66 50 54.644414316   18.26 17.87 17.24   ~ 59 1
133 PKS 1540-077 rG 15 43 01.68694793 -07 57 06.6393778   18       ~ 42 1
134 ICRF J154609.5+002624 Bla 15 46 09.53146317 +00 26 24.6145149   19.730 18.900 19.5   ~ 91 1
135 PKS 1545-120 rG 15 48 12.93973023 -12 13 31.3199970           ~ 21 1
136 PKS 1548-302 Rad 15 51 19.1 -30 24 06           ~ 5 0
137 4C -06.43 Sy2 15 56 13.992 -06 22 37.81           ~ 16 1
138 PKS 1557-00 Rad 16 00 01.022 -00 37 22.51           ~ 18 1
139 4C 33.38 Bla 16 02 07.26346417 +33 26 53.0723251     23.0 23   ~ 148 1
140 ICRF J160341.9+110548 BLL 16 03 41.93125418 +11 05 48.6791330   18.41 17.82 16.66   ~ 77 2
141 PKS 1601-222 rG 16 04 01.47174802 -22 23 40.9881985   21.0       ~ 40 1
142 QSO J1606+3124 QSO 16 06 08.51837827 +31 24 46.4577593       22.56   ~ 47 1
143 ICRF J160913.3+264129 Sy2 16 09 13.3196 +26 41 29.042   19       ~ 249 1
144 QSO B1614+051 Bla 16 16 37.55681923 +04 59 32.7365717   19.60 19.17 19.49   ~ 195 2
145 [VV96] J162304.5+662401 Bla 16 23 04.52169655 +66 24 01.0787041   19.477   17.430   ~ 67 1
146 4C 12.60 rG 16 40 47.93882656 +12 20 02.0793087   19.5       ~ 53 1
147 7C 1645+6335 Bla 16 45 58.55268458 +63 30 10.9228284   19.87 19.77 19.5   ~ 80 1
148 4C 02.43 Sy2 16 48 31.751 +02 42 47.67   17       ~ 21 1
149 ICRF J171701.1+191740 QSO 17 17 01.16594708 +19 17 40.6558800           ~ 22 1
150 6C 172611+765537 QSO 17 23 59.44512335 +76 53 11.5518529     19.2     ~ 32 1
151 ICRF J173458.3+092658 Bla 17 34 58.37695187 +09 26 58.2616373       20.8   ~ 67 1
152 NVSS J173549+504911 rG 17 35 49.00517 +50 49 11.5659       22.40   ~ 57 1
153 4C 09.57 BLL 17 51 32.81857326 +09 39 00.7284066   17.46 16.78 15.57   ~ 1007 1
154 NVSS J175301+275059 rG 17 53 01.34610 +27 50 59.0160           ~ 23 1
155 7C 175844.60+384828.00 Bla 18 00 24.76536016 +38 48 30.6974570   17.8 17.98 17.04   ~ 161 1
156 1RXS J180043.6+782806 BLL 18 00 45.6838528560 +78 28 04.018028016   16.4 15.90 16.134   ~ 793 1
157 ICRF J181143.1+170457 BLL 18 11 43.18346508 +17 04 57.2575194       18.98   ~ 36 1
158 NVSS J182632+270808 Rad 18 26 32.12 +27 08 08.0           ~ 15 0
159 QSO J1840+3900 Bla 18 40 57.15422373 +39 00 45.7240946     19.20 19.14   ~ 58 1
160 NVSS J184535+354116 rG 18 45 35.10883099 +35 41 16.7264948   19.830   21.900   ~ 68 0
161 QSO B1848+283 Bla 18 50 27.5898721080 +28 25 13.155071160   17.1 17 17.16   ~ 87 1
162 QSO B1851+488 Bla 18 52 28.54781487 +48 55 47.4814782   19.0   18.77   ~ 121 1
163 ICRF J185527.7+374256 Bla 18 55 27.70681096 +37 42 56.9655757       20.20   ~ 41 1
164 ICRF J193925.0-634245 Sy2 19 39 25.0245304992 -63 42 45.640373400   18.87 18.37 17.64   ~ 1332 2
165 QSO B1936-155 Bla 19 39 26.65775171 -15 25 43.0584711   19.44 20.30 18.80   ~ 180 1
166 QSO B1954-388 Bla 19 57 59.81927491 -38 45 06.3558881   18.47 17.07 16.73   ~ 239 1
167 QSO B2000-330 Bla 20 03 24.1161711720 -32 51 45.136882080   18.83 18.4 17.11   ~ 279 1
168 8C 2007+777 BLL 20 05 30.9987913056 +77 52 43.248139536     16.5 17.36   ~ 474 1
169 PKS 2008-068 rG 20 11 14.21582587 -06 44 03.5555103     17.2     ~ 91 1
170 QSO B2008-159 Bla 20 11 15.71092555 -15 46 40.2537406   17.27 18.30 16.35   ~ 186 1
171 ICRF J202135.2+051504 QSO 20 21 35.28120633 +05 15 04.7781809       21.70   ~ 40 1
172 QSO B2021+614 Bla 20 22 06.68174620 +61 36 58.8047323     19.00 17.58   ~ 335 1
173 [VV96] J202456.5+171814 Bla 20 24 56.5636552128 +17 18 13.196337192   17.5 19.5 17.51   ~ 68 1
174 ICRF J205252.0+363535 Sy2 20 52 52.05501061 +36 35 35.3005698   22.083   21.200   ~ 112 2
175 PKS 2053-20 rG 20 56 04.2772181688 -19 56 35.394139824   19.0       ~ 56 1
176 4C 05.78 rG 20 58 26 +05 40.7           ~ 14 0
177 QSO B2059+034 Bla 21 01 38.83415344 +03 41 31.3207714   18.13 17.78 17.68   ~ 176 1
178 ICRF J211458.3+283257 Bla 21 14 58.33362526 +28 32 57.1966465   18.6   18.91   ~ 48 1
179 PKS 2121-014 rG 21 23 39.12832 -01 12 34.1316           ~ 35 1
180 QSO J2123+0535 Bla 21 23 44.51739933 +05 35 22.0930238   18.3 20.40 19.86   ~ 320 1
181 QSO B2126-15 Bla 21 29 12.17589329 -15 38 41.0419083   17.61 17.3 17.3   ~ 521 1
182 QSO B2126-185 QSO 21 29 21.41910359 -18 21 22.7903660     20.0     ~ 39 1
183 ICRF J213032.8+050217 AG? 21 30 32.87740078 +05 02 17.4745177     23.4     ~ 164 1
184 QSO B2128-123 BLL 21 31 35.2617909696 -12 07 04.795364172   16.33 16.11 15.87   ~ 470 1
185 QSO B2134+0028 Bla 21 36 38.58632232 +00 41 54.2128562   17.30 17.08 17.02   ~ 580 2
186 QSO B2136+1410 Bla 21 39 01.30926630 +14 23 35.9921774     18.90 18.22   ~ 264 1
187 QSO B2149+056 Bla 21 51 37.87549026 +05 52 12.9545152   23.700 22.050 20.850   ~ 120 1
188 PMN J2155-1139 Rad 21 55 50.71835467 -11 39 47.9783765           ~ 22 1
189 [VV96] J215729.0-180703 QSO 21 57 29.1244244592 -18 07 02.834552064     20.6     ~ 33 1
190 NVSS J220330+100742 rG 22 03 30.95260247 +10 07 42.5863773       21.38   ~ 44 0
191 ICRF J220752.8+165217 Bla 22 07 52.86567746 +16 52 17.8154293   19.5 19.5 19.98   ~ 49 1
192 QSO B2209+236 Bla 22 12 05.96631459 +23 55 40.5438259   19 20.66 19.69   ~ 257 1
193 ICRF J221237.9+015251 Sy2 22 12 37.97355904 +01 52 51.1910560     21.7     ~ 89 1
194 ICRF J223834.6+124250 Q? 22 38 34.60482905 +12 42 50.7821896     19.5     ~ 34 1
195 QSO B2254-204 BLL 22 56 41.2074627672 -20 11 40.512113340   19.04 18.5 18.18   ~ 98 1
196 QSO J2257+0243 Bla 22 57 17.56309534 +02 43 17.5116538   18.04 17.96 18.45   ~ 165 1
197 QSO B2255-2814 Bla 22 58 05.96287687 -27 58 21.2567572   17.34 16.77 17.20   ~ 397 1
198 QSO J2320+0513 QSO 23 20 44.85659166 +05 13 49.9526016   18.6 19.0     ~ 166 1
199 NVSS J232503+791715 rG 23 25 03.13217293 +79 17 15.6810424           ~ 15 1
200 AT20G J232510-034446 Sy2 23 25 10.258047 -03 44 46.71563           ~ 32 1
201 QSO B2327+335 Bla 23 30 13.73765966 +33 48 36.4714906     18.5 18.71   ~ 53 1
202 PKS J2336-5236 rG 23 36 12.14453637 -52 36 21.9510844   18.8       ~ 77 1
203 4C -06.76 Sy2 23 39 46.414534 -06 04 12.48433           ~ 19 2
204 ICRF J234029.0+264156 BLL 23 40 29.02947125 +26 41 56.8046329   20.0 20 19.24   ~ 60 1
205 ICRF J234403.7+822640 Sy2 23 44 03.8302221504 +82 26 40.345410408   21.769 20.5 20.220   ~ 104 1
206 6C 235239+493337 BLL 23 55 09.45814429 +49 50 08.3394994   21.101   18.400   ~ 284 1
207 6C 235401+813601 Bla 23 56 22.79391486 +81 52 52.2550985     20.3 18   ~ 72 1

To bookmark this query, right click on this link: simbad:objects in 2008A&A...482..483T and select 'bookmark this link' or equivalent in the popup menu