2007A&A...466...63W

Query : 2007A&A...466...63W

2007A&A...466...63W - Astronomy and Astrophysics, volume 46663-73 (2007/4-4)

VLBI observations of seven BL Lacertae objects from RGB sample.

WU Z., JIANG D.R., GU M. and LIU Y.

Abstract (from CDS):

We present EVN observations of seven BL Lac objects selected from the RGB sample. To investigate the intrinsic radiation property of BL Lac objects, we estimated the Doppler factor with the VLA or MERLIN core and the total 408MHz luminosity for a sample of 170 BL Lac objects. The intrinsic (comoving) synchrotron peak frequency was then calculated by using the estimated Doppler factor. Assuming a Lorentz factor of 5, the viewing angle of jets was constrained. The high-resolution VLBI images of seven sources all show a core-jet structure. We estimated the proper motions of three sources with the VLBI archive data, and find that the apparent speed increases with the distance of components to the core for all of them. In our BL Lacs sample, the Doppler factor of LBLs is systematically larger than that of IBLs and HBLs. We find a significant anti-correlation between the total 408MHz luminosity and the intrinsic synchrotron peak frequency. However, the scatter is much larger than for the blazar sequence. Moreover, we find a significant positive correlation between the viewing angle and the intrinsic synchrotron peak frequency. The BL Lac objects show a continuous distribution on the viewing angle. While LBLs have a smaller viewing angle than that of IBLs and HBLs, IBLs are comparable to HBLs. We conclude that the intrinsic synchrotron peak frequency is not only related to the intrinsic radio power (though with a large scatter), but also to the viewing angle for the present sample.

Abstract Copyright: ∼

Journal keyword(s): BL Lacertae objects: general - galaxies: active - galaxies: jets - galaxies: nuclei - radio continuum: galaxies

VizieR on-line data: <Available at CDS (J/A+A/466/63): table4.dat refs.dat>

Simbad objects: 173

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Number of rows : 173
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 B0003-066 BLL 00 06 13.89288482 -06 23 35.3353584   19.1 18.50 17.14   ~ 346 1
2 2MASS J00075997+4712078 BLL 00 07 59.9724805320 +47 12 07.769093004   18.3   18.2   ~ 71 1
3 RX J0035.8+5950 BLL 00 35 52.6448284115 +59 50 04.513482441     19.5 17.2   ~ 195 1
4 RX J0040.2+4049 BLL 00 40 13.8112928443 +40 50 04.756997684     19.30 19.9   ~ 80 1
5 QSO B0048-09 BLL 00 50 41.3172421464 -09 29 05.210474100 16.74 16.39 16.22 16.14   ~ 480 2
6 RX J0110.0+4149 BLL 01 10 04.8120900624 +41 49 50.731434480       14   ~ 35 1
7 QSO B0109+224 BLL 01 12 05.8247044608 +22 44 38.785880796   16.00 15.66 15.47   ~ 373 2
8 RX J0115.7+2520 BLL 01 15 46.1420552904 +25 19 53.344003368 18.08 17.88 18.52     ~ 85 1
9 RX J0123.1+3420 BLL 01 23 08.6375580816 +34 20 48.664188060       16.8   ~ 132 1
10 QSO B0122+09 BLL 01 24 44.5398641328 +09 18 49.289559588     19.98 18.5   ~ 58 0
11 4C 14.06 QSO 01 29 55.34714987 +14 46 47.8365262   20.23 19.90     ~ 59 1
12 1RXS J013632.9+390556 BLL 01 36 32.5983798936 +39 05 59.199517428       15.5   ~ 146 2
13 1RXS J014126.8-092857 BLL 01 41 25.83216015 -09 28 43.6742470   16.94 16.55 17.21   ~ 302 1
14 QSO B0145+138 BLL 01 48 29.7013033536 +14 02 17.848330656     17.90 16.7   ~ 45 0
15 8C 0149+710 BLL 01 53 25.85101910 +71 15 06.4633311     15.50     ~ 105 1
16 RX J0201.1+0034 BLL 02 01 06.1794930072 +00 34 00.135789564   18.99 18.42 18   ~ 113 0
17 1RXS J020837.5+352314 BLL 02 08 38.1634090056 +35 23 12.806970864       18.8   ~ 110 0
18 RX J0214.2+5144 BLL 02 14 17.9358553848 +51 44 51.945795816       16.5   ~ 133 1
19 3C 66A BLL 02 22 39.6114771888 +43 02 07.799534304   15.71 15.21 14.5   ~ 942 2
20 RX J0232.8+2017 BLL 02 32 48.6148874688 +20 17 17.486717388     18.00 13.96   ~ 387 1
21 QSO B0235+1624 BLL 02 38 38.93010450 +16 36 59.2745528   16.46 15.50 15.92   ~ 1614 2
22 1RXS J030103.8+344109 BLL 03 01 03.7549027896 +34 41 01.078942128     18.53     ~ 63 0
23 LEDA 138609 BLL 03 14 02.7340832016 +24 44 32.804176128     18.3     ~ 29 0
24 PMN J0326+0225 BLL 03 26 13.9481827296 +02 25 14.675937708   17.05 16.55 15.3   ~ 255 1
25 PMN J0416+0105 BLL 04 16 52.4945693352 +01 05 23.899102620   16.86 16.38 16   ~ 302 1
26 1RXS J042218.2+195047 BLL 04 22 18.3397702069 +19 50 54.920278805           ~ 90 0
27 QSO B0422+004 BLL 04 24 46.8421990080 +00 36 06.329375028 16.15 15.94 16.98     ~ 378 1
28 PMN J0505+0416 BLL 05 05 34.7693853576 +04 15 54.577536876 18.07 17.80 17.56 16.8   ~ 83 1
29 RX J0507.9+6737 BLL 05 07 56.1631660632 +67 37 24.225299292       17.2   ~ 196 1
30 QSO B0454+844 BLL 05 08 42.36351222 +84 32 04.5441733     16.5 18.95   ~ 250 1
31 1RXS J050938.3-040037 BLL 05 09 38.1791014104 -04 00 45.682814376   19.10   17.92   ~ 78 0
32 QSO B0607+710 BLL 06 13 43.3821991056 +71 07 26.779488276   19.6 19.61 19.1   ~ 82 0
33 ICRF J062518.2+444001 BLL 06 25 18.26537500 +44 40 01.6261460     16.80 18.71   ~ 112 1
34 RX J0650.7+2502 BLL 06 50 46.4900658984 +25 02 59.625654828 16.17 15.97 15.79 16.3   ~ 175 2
35 7C 065109.30+425147.00 BLL 06 54 43.5253496568 +42 47 58.730753904     17.00 14.9   ~ 48 1
36 4C 42.22 BLL 06 56 10.66207584 +42 37 02.7512524   15.0 16.90 11.1   ~ 90 1
37 RX J0710.5+5908 BLL 07 10 30.0683697888 +59 08 20.371772544   17.38 16.52 15.1   ~ 249 1
38 8C 0716+714 BLL 07 21 53.4482942664 +71 20 36.363846516   15.5 15.50 14.27   ~ 1388 1
39 QSO J0738+1742 BLL 07 38 07.39375312 +17 42 18.9981506   16.76 16.22 15.78   ~ 1045 1
40 QSO B0737+744 BLL 07 44 05.3750968872 +74 33 58.256429832     16.89 16.6   ~ 144 0
41 4C 54.15 BLL 07 53 01.38457270 +53 52 59.6370830   18.5   16.77   ~ 173 1
42 QSO B0754+10 BLL 07 57 06.64295154 +09 56 34.8522544   15.43 15.00 15.99   ~ 461 1
43 RX J0806.4+5931 BLL 08 06 25.9488552792 +59 31 06.910219092       15.7   ~ 64 1
44 RX J0809.8+5218 BLL 08 09 49.1868285744 +52 18 58.249938744   16.11 15.59 14.6   ~ 302 1
45 7C 081451.89+423206.00 BLL 08 18 15.99961476 +42 22 45.4148987   18.88 18.18 17.81   ~ 429 1
46 4C 22.21 BLL 08 23 24.7592164368 +22 23 03.287299236   20.22 19.57 19.7   ~ 186 1
47 QSO B0823+033 BLL 08 25 50.33835759 +03 09 24.5199749   17.81 17.23 16.91   ~ 352 1
48 1H 0827+089 X 08 29 54 +08 49.3           ~ 7 0
49 QSO B0829+047 BLL 08 31 48.8770033992 +04 29 39.086842884   17.10 16.4 14.55   ~ 511 2
50 6C 082850+492334 BLL 08 32 23.21674252 +49 13 21.0382979   20.17 19.63     ~ 173 1
51 US 1889 BLL 08 54 09.8887760136 +44 08 30.280418016   17.40 17.14 17   ~ 70 1
52 PG 0851+202 BLL 08 54 48.8749846272 +20 06 30.639583620   15.649 15.146 15.446   ~ 2513 1
53 Ton 397 BLL 09 15 52.4015550384 +29 33 24.042671532   16.79 16.39 16.085   ~ 238 1
54 RX J0916.8+5238 BLL 09 16 51.9350409624 +52 38 28.331223072   19.02 18.10 15   ~ 82 1
55 6C 092554+502611 BLL 09 29 15.4401569832 +50 13 35.990913000   17.18 16.80 15.94   ~ 159 2
56 RX J0930.6+4950 BLL 09 30 37.5737660328 +49 50 25.549611036   18.81 18.25 17.3   ~ 128 0
57 7C 0927+3516 BLL 09 30 55.27911112 +35 03 37.6081515   20.98 20.35 18.40   ~ 77 1
58 ICRF J095232.1+653801 BLL 09 52 32.1923365416 +65 38 01.217805684     18.00 18   ~ 23 1
59 RX J0954.1+4914 BLL 09 54 09.8719327752 +49 14 59.557692012   19.33 19.10 19.5   ~ 75 0
60 6C 095456+654857 BLL 09 58 47.2451872176 +65 33 54.819354600     17.0 15.75   ~ 771 1
61 RX J1012.7+4229 BLL 10 12 44.3054821248 +42 29 57.094313532   19.01 18.43     ~ 93 1
62 RX J1015.0+4926 BLL 10 15 04.1396533776 +49 26 00.706055496   16.56 16.15 14.58   ~ 400 3
63 RX J1031.3+5053 BLL 10 31 18.5251007784 +50 53 35.817278064   17.25 16.98 16.3   ~ 210 2
64 RX J1037.7+5711 BLL 10 37 44.3078432736 +57 11 55.629345156   17.05 16.54 16.7   ~ 131 1
65 RX J1047.7+5437 BLL 10 47 45.8223598944 +54 37 41.150886636   20.42 19.73 19.9   ~ 23 0
66 2E 1050.7+4946 ClG 10 53 44.1 +49 29 56           ~ 58 1
67 7C 105047.29+494553.00 BLL 10 53 44.1256067376 +49 29 55.999047156   18.70 17.76 13.8   ~ 155 2
68 Z 184-50 BLL 11 04 27.3140835504 +38 12 31.798495872   13.50 12.90 8.31   ~ 2841 1
69 QSO B1106+244 BLL 11 09 16.1671846680 +24 11 20.151320064     18.7 17.4   ~ 52 0
70 RX J1120.7+4212 BLL 11 20 48.0624161160 +42 12 12.465387612   17.55 17.11 16.9   ~ 130 2
71 Z 334-43 BLL 11 36 26.4090783600 +70 09 27.309071232   15.16 14.49 10.51   ~ 394 1
72 HS 1133+6753 BLL 11 36 30.0868711488 +67 37 04.345988232   18.19 17.45 15.3   ~ 161 1
73 RX J1149.5+2439 BLL 11 49 30.3540653568 +24 39 26.958921660   18.86 18.35 18.1   ~ 58 1
74 7C 1147+2434 BLL 11 50 19.21218244 +24 17 53.8352318   16.26 15.74 15.80   ~ 294 1
75 8C 1148+592 BLL 11 51 24.6603608736 +58 59 17.566414656   16.53 16.09 16.3   ~ 92 2
76 ICRF J120922.7+411941 BLL 12 09 22.7879963712 +41 19 41.371293540   18.42 17.83 16.74   ~ 133 2
77 PMN J1215+0732 BLL 12 15 10.9765816512 +07 32 04.676330688     16.0 14.8   ~ 114 1
78 Ton 605 HB* 12 16 53.6748432768 +30 04 08.692883544   16.110 15.98     B 223 0
79 RX J1217.8+3007 BLL 12 17 52.0819904040 +30 07 00.634936872   16.07 15.62 13.47   G7 516 1
80 7C 121737.89+344814.00 BLL 12 20 08.2941462528 +34 31 21.743167116   17.71 17.09 17.07   ~ 121 1
81 PG 1218+304 BLL 12 21 21.9426947832 +30 10 37.158534012   16.50 15.85 15.7   ~ 497 1
82 7C 1219+2830 BLL 12 21 31.6904439888 +28 13 58.500308172   16.81 16.11 14.24   ~ 924 1
83 8C 1221+809 BLL 12 23 40.49375661 +80 40 04.3404140     19.0 19.3   ~ 119 1
84 RX J1224.4+2436 BLL 12 24 24.1862962656 +24 36 23.499792828   17.93 17.37     ~ 162 1
85 RX J1230.2+2518 BLL 12 30 14.0893292232 +25 18 07.136022996   15.6   14.78   ~ 177 1
86 QSO B1229+6430 BLL 12 31 31.3949261640 +64 14 18.280701600   18.36 17.62 14.3   ~ 160 2
87 RX J1237.6+6258 BLL 12 37 39.0753390528 +62 58 42.801146328   18.89 18.25 17   ~ 116 0
88 RX J1241.8+0636 BLL 12 41 48.2721377400 +06 36 01.127632284   18.97 18.52 19.4   ~ 52 0
89 LB 2449 BLL 12 48 18.7847605224 +58 20 28.717260720   16.10 15.78 15.19   ~ 215 1
90 1RXS J125311.9+530105 BLL 12 53 11.9204702472 +53 01 11.737422696   18.07 17.51 16.4   ~ 143 1
91 RX J1257.5+2412 BLL 12 57 31.9330943592 +24 12 40.164677136       15.7   ~ 91 0
92 US 371 BLL 13 10 28.66385420 +32 20 43.7828340   15.61 15.24 17.91   ~ 917 1
93 QSO B1320+084 BLL 13 22 54.8871658080 +08 10 10.217278488   19.69 19.34 18.5   ~ 10 0
94 ACO 1774 ClG 13 40 54.0 +39 58 28           ~ 40 0
95 4C 16.39 BLL 14 02 44.5145118408 +15 59 56.654415816   17.20 16.74 15.5   ~ 153 2
96 RX J1404.8+0402 BLL 14 04 50.9113762032 +04 02 02.209070292   16.93 16.61     ~ 142 1
97 RX J1409.3+5939 BLL 14 09 23.4933928320 +59 39 40.624242444   19.60 19.05     ~ 83 1
98 ATO J213.9033+48.5084 BLL 14 15 36.7999941576 +48 30 30.451603860   19.40 18.97 17.1   ~ 76 1
99 QSO B1413+135 BLL 14 15 58.81751033 +13 20 23.7128587   21.055 20.000 18.461   ~ 476 1
100 2E 1415.0+2557 X 14 17 56.60 +25 43 25.2           ~ 5 0
101 6C 141804+543700 BLL 14 19 46.5974051952 +54 23 14.787857796   16.17 15.65 14.16   ~ 630 1
102 PG 1424+240 BLL 14 27 00.3917926224 +23 48 00.037510776 14.52 14.34 14.95 14.5   ~ 420 1
103 LEDA 3486854 BLL 14 27 30.2807057688 +54 09 23.720526720     17.40     ~ 41 1
104 RX J1428.5+4240 BLL 14 28 32.6090008440 +42 40 21.048123396   16.95 16.45 14.4   ~ 549 1
105 PG 1437+398 BLL 14 39 17.4789214824 +39 32 42.807064020   17.36 17.10 16.5   ~ 125 2
106 RX J1442.8+1200 BLL 14 42 48.2771008152 +12 00 40.348597716   18.34 17.63 15.2   ~ 189 1
107 RX J1444.5+6336 BLL 14 44 34.9068259224 +63 36 05.984137260   20.76 19.67 18.6   ~ 63 0
108 RX J1448.0+3608 BLL 14 48 00.5826450192 +36 08 31.165443852   17.31 16.88 16.2   ~ 89 1
109 NVSS J145833+371325 Rad 14 58 33.828 +37 13 20.91           ~ 4 1
110 RX J1501.0+2238 BLL 15 01 01.8350446584 +22 38 06.373155444   16.29 15.79     ~ 139 1
111 87GB 150825.5+560806 BLL 15 09 47.9502341856 +55 56 17.288589588   17.2 17.91 17.2   ~ 79 2
112 RX J1516.7+2918 BLL 15 16 41.5940814168 +29 18 09.209994840       14.6   ~ 61 1
113 RX J1517.7+6525 BLL 15 17 47.5882526184 +65 25 23.285593704       16.7   ~ 131 1
114 RX J1532.0+3016 BLL 15 32 02.2318415520 +30 16 28.855961652           ~ 97 1
115 RX J1533.4+3416 BLL 15 33 24.2707322904 +34 16 40.306756692   18.59 18.31 18.1   ~ 62 0
116 2MASS J15344720+3715545 BLL 15 34 47.2078521912 +37 15 54.618295464   18.26 17.57     ~ 89 1
117 RX J1535.0+5320 BLL 15 35 00.7962236712 +53 20 37.302992988   19.18 18.75 18.8   ~ 73 1
118 RX J1536.7+0137 BLL 15 36 46.7546783544 +01 38 00.077346276           ~ 72 1
119 RX J1540.2+8155 BLL 15 40 15.8786533752 +81 55 05.781420660       15.8   ~ 90 1
120 QSO B1542+614 BLL 15 42 56.9436243096 +61 29 55.346749080   16.9 16.25 16.6   ~ 159 1
121 RX J1554.4+2011 BLL 15 54 24.1304763192 +20 11 25.399984632     17.70     ~ 112 1
122 PG 1553+113 BLL 15 55 43.0440048528 +11 11 24.365649948 14.91 14.72 14.57 13.99   ~ 672 1
123 RX J1602.2+3050 BLL 16 02 18.0690481440 +30 51 09.537519708   18.56 18.10     ~ 45 1
124 4C 37.46 BLL 16 21 11.2759546848 +37 46 04.839440412   20.47 19.65 18.85   ~ 49 1
125 RX J1626.4+3513 BLL 16 26 25.8603470616 +35 13 41.454253488   19.05 18.54 18.1   ~ 66 1
126 RX J1644.3+4546 BLL 16 44 19.9733510880 +45 46 44.350987764   19.44 18.50 15.2   ~ 70 1
127 RX J1652.8+4022 BLL 16 52 49.9253988240 +40 23 10.106804256   18.98 18.50 17.6   ~ 44 0
128 Z 225-7 BLL 16 53 52.21668403 +39 45 36.6088754 14.09 14.15 13.29 8.26   ~ 2304 2
129 ICRF J170446.9+713817 BLL 17 04 46.9770712224 +71 38 17.609271828   18.93 18.26 17.5   ~ 39 1
130 QSO B1717+178 BLL 17 19 13.04848035 +17 45 06.4371847   20.10 19.1 17.28   ~ 247 1
131 7C 172226.89+400715.00 BLL 17 24 05.42881867 +40 04 36.4570720   21.90   19.75   ~ 106 1
132 RX J1725.0+1152 BLL 17 25 04.3409350008 +11 52 15.471967296   16.29 15.77 14.45   ~ 221 1
133 ZW I 187 BLL 17 28 18.6242294352 +50 13 10.469553996   16.55 15.97 12.95   ~ 396 1
134 7C 173836.20+473929.00 BLL 17 39 57.12907095 +47 37 58.3614787   18.5 19.5 18.88   ~ 147 2
135 ICRF J174232.0+594506 BLL 17 42 31.9998615600 +59 45 06.731291412   17.74 17.14 16.7   ~ 89 1
136 1RXS J174357.3+193505 BLL 17 43 57.8330083440 +19 35 09.018846384     16.80 12.7   ~ 190 1
137 7C 174359.60+395236.00 BLL 17 45 37.7544298992 +39 51 30.936584340     18.30 15.9   ~ 65 2
138 7C 174604.90+465932.00 BLL 17 47 26.64727228 +46 58 50.9262456     21.30 19.17   ~ 64 1
139 RX J1748.5+7005 BLL 17 48 32.8402992264 +70 05 50.768819304   17.46 17.01 15.48   ~ 456 2
140 ICRF J174900.3+432151 BLL 17 49 00.36038214 +43 21 51.2873300     18.21 19.84   ~ 106 1
141 7C 174843.00+470200.00 BLL 17 50 05.0110986456 +47 00 43.683226092     19.00     ~ 24 1
142 4C 09.57 BLL 17 51 32.81857326 +09 39 00.7284066   17.46 16.78 15.57   ~ 1007 1
143 RX J1756.2+5522 BLL 17 56 15.8816206632 +55 22 18.090129072   17.23 16.87 18   ~ 72 1
144 RX J1757.2+7033 BLL 17 57 13.0521071712 +70 33 37.820087172       18   ~ 87 1
145 1RXS J180043.6+782806 BLL 18 00 45.6838528560 +78 28 04.018028016   16.4 15.90 16.134   ~ 793 1
146 Z 340-35 BLL 18 06 50.6802916920 +69 49 28.109609256   14.77 14.22 11.39   ~ 909 1
147 87GB 180639.0+464836 BLL 18 08 01.1957270040 +46 49 40.964952792     18.40 18.3   ~ 25 1
148 7C 181023.80+441539.00 BLL 18 11 53.405 +44 16 28.75     18.90 20.1   ~ 19 1
149 7C 181142.79+314318.00 BLL 18 13 35.2028439312 +31 44 17.620234836     17.4 15.2   ~ 116 1
150 4C 56.27 BLL 18 24 07.06837171 +56 51 01.4908155   18.9 19.30 16.48   ~ 510 1
151 6C 182826+540204 BLL 18 29 24.2822674704 +54 02 59.740254132     17.60 17.2   ~ 70 1
152 RX J1838.7+4802 BLL 18 38 49.1550459624 +48 02 34.274232744     17.60 15.671   ~ 89 0
153 1RXS J184121.3+590603 BLL 18 41 20.3046332760 +59 06 08.206599564       18.6   ~ 27 0
154 1RXS J185351.0+671356 BLL 18 53 52.0667262720 +67 13 55.016841792       17.1   ~ 52 1
155 6C 192647+611105 BLL 19 27 30.4428785736 +61 17 32.878880988   17.5 17.5 16.99   ~ 139 1
156 QSO B1959+650 BLL 19 59 59.8520303688 +65 08 54.652536492     12.8 11.21   ~ 699 2
157 8C 2007+777 BLL 20 05 30.9987913056 +77 52 43.248139536     16.5 17.36   ~ 474 1
158 4C 72.28 BLL 20 09 52.3047264984 +72 29 19.351077612   19.0   19.40   ~ 127 1
159 6C 202345+760123 BLL 20 22 35.5757966424 +76 11 26.171152728     18.10 17.54   ~ 109 1
160 RX J2039.3+5219 BLL 20 39 23.5181915742 +52 19 50.035414651     19.0 16.2   ~ 84 1
161 4C -02.81 BLL 21 34 10.30958988 -01 53 17.2389056   18.6 19.00 18.87   ~ 431 1
162 PMN J2145+0720 BLL 21 45 52.2999532008 +07 19 27.205685508       16   ~ 120 1
163 QSO B2150+173 BLL 21 52 24.81939266 +17 34 37.7950210     17.9 17.98   ~ 186 2
164 NAME BL Lac BLL 22 02 43.2913536816 +42 16 39.979416792   15.66 14.72     ~ 2397 1
165 RX J2250.0+3824 BLL 22 50 05.7481607616 +38 24 37.193100984       14.8   ~ 147 2
166 QSO B2254+0727 BLL 22 57 17.30311778 +07 43 12.3025633   17.07 16.36     ~ 317 1
167 4FGL J2319.7+1609 BLL 23 19 43.4358803544 +16 11 50.171870688     18.00 17.3   ~ 36 1
168 1RXS J232243.7+343616 BLL 23 22 44.0142017808 +34 36 13.873220208       13.2   ~ 87 1
169 1RXS J232352.2+421057 BLL 23 23 52.0756006920 +42 10 58.553658012     17.00 19.9   ~ 98 1
170 QSO B2326+174 BLL 23 29 03.3191370096 +17 43 30.526001112     16.8 16.7   ~ 33 2
171 1RXS J233907.6+053433 BLL 23 39 07.4027350824 +05 34 26.445216756     20.30 19.7   ~ 30 1
172 QSO B2344+514 BLL 23 47 04.8372110928 +51 42 17.877513168     15.50 10.7   ~ 500 1
173 NVSS J235001+194151 BLL 23 50 01.71932 +19 41 51.5338     20.78 19.9   ~ 33 0

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