2014AJ....147..143H

Query : 2014AJ....147..143H

2014AJ....147..143H - Astron. J., 147, 143 (2014/June-0)

MOJAVE: monitoring of jets in active galactic nuclei with VLBA experiments. XI. Spectral distributions.

HOVATTA T., ALLER M.F., ALLER H.D., CLAUSEN-BROWN E., HOMAN D.C., KOVALEV Y.Y., LISTER M.L., PUSHKAREV A.B. and SAVOLAINEN T.

Abstract (from CDS):

We have obtained milliarcsecond-scale spectral index distributions for a sample of 190 extragalactic radio jets through the Monitoring of Jets in Active Galactic Nuclei with the VLBA Experiments (MOJAVE) project. The sources were observed in 2006 at 8.1, 8.4, 12.1, and 15.4 GHz, and we have determined spectral index maps between 8.1 and 15.4 GHz to study the four-frequency spectrum in individual jet features. We have performed detailed simulations to study the effects of image alignment and (u, v)-plane coverage on the spectral index maps to verify our results. We use the spectral index maps to study the spectral index evolution along the jet and determine the spectral distributions in different locations of the jets. The core spectral indices are on average flat with a mean value of +0.22±0.03 for the sample, while the jet spectrum is in general steep with a mean index of -1.04±0.03. A simple power-law fit is often inadequate for the core regions, as expected if the cores are partially self-absorbed. The overall jet spectrum steepens at a rate of about -0.001 to -0.004 per deprojected parsec when moving further out from the core with flat spectrum radio quasars having significantly steeper spectra (mean -1.09±0.04) than the BL Lac objects (mean -0.80±0.05). However, the spectrum in both types of objects flattens on average by ∼0.2 at the locations of the jet components indicating particle acceleration or density enhancements along the jet. The mean spectral index at the component locations of -0.81±0.02 corresponds to a power-law index of ∼2.6 for the electron energy distribution. We find a significant trend that jet components with linear polarization parallel to the jet (magnetic field perpendicular to the jet) have flatter spectra, as expected for transverse shocks. Compared to quasars, BL Lacs have more jet components with perpendicular magnetic field alignment, which may explain their generally flatter spectra. The overall steepening of the spectra with distance can be explained with radiative losses if the jets are collimating or with the evolution of the high-energy cutoff in the electron spectrum if the jets are conical. This interpretation is supported by a significant correlation with the age of the component and the spectral index, with older components having steeper spectra.

Abstract Copyright: ∼

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

VizieR on-line data: <Available at CDS (J/AJ/147/143): table1.dat table2.dat>

Simbad objects: 190

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Number of rows : 190
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 QSO B0003+380 Bla 00 05 57.17538691 +38 20 15.1489639   19.4 18.10 17.16   ~ 142 1
2 QSO B0003-066 BLL 00 06 13.89288482 -06 23 35.3353584   19.1 18.50 17.14   ~ 327 1
3 Mrk 1501 Sy1 00 10 31.00590413 +10 58 29.5042981   15.96 15.40 12.22   ~ 717 0
4 ICRF J001331.1+405137 Sy1 00 13 31.13019909 +40 51 37.1441374   17.9 17.9     ~ 115 1
5 QSO B0016+73 QSO 00 19 45.78637230 +73 27 30.0176020     19.00 18.26   ~ 296 1
6 QSO B0048-09 BLL 00 50 41.3172421464 -09 29 05.210474100 16.74 16.39 16.22 16.14   ~ 459 2
7 NGC 315 LIN 00 57 48.88334410 +30 21 08.8119345 12.80 12.20 11.16 11.26   ~ 786 2
8 7C 0059+5808 QSO 01 02 45.76237340 +58 24 11.1366164   20.09 19.22 18.57 17.90 ~ 231 1
9 4C 01.02 Bla 01 08 38.77110544 +01 35 00.3171844   18.54 18.39 19.05   ~ 542 1
10 QSO B0109+224 BLL 01 12 05.8247044608 +22 44 38.785880796   16.00 15.66 15.47   ~ 343 2
11 QSO B0111+021 BLL 01 13 43.14494773 +02 22 17.3162687   16.4 16.0 11.22   ~ 133 1
12 ICRF J012141.5+114950 Sy1 01 21 41.59504128 +11 49 50.4132344   19.5 19.70 18.61   ~ 184 1
13 6C 013354+473615 Bla 01 36 58.59480326 +47 51 29.1000720     19.50 19.25 15.21 ~ 501 1
14 QSO B0149+218 QSO 01 52 18.05904204 +22 07 07.6997943     18 18.89   ~ 175 1
15 4C 15.05 Bla 02 04 50.41389294 +15 14 11.0436097   21.9 21.00 21.00   ~ 412 1
16 7C 020209.69+315812.00 QSO 02 05 04.92536206 +32 12 30.0954703     17.40 17.40   ~ 227 1
17 6C 021252+733537 BLL 02 17 30.81335327 +73 49 32.6217355     19.00 18.97   ~ 455 1
18 QSO J0217+0144 QSO 02 17 48.95475095 +01 44 49.6990271   16.74 16.09 18.51 13.29 ~ 424 1
19 3C 66A BLL 02 22 39.6114771888 +43 02 07.799534304   15.71 15.21 14.5   ~ 887 1
20 4C 67.05 QSO 02 28 50.05148365 +67 21 03.0293322   19.5 19.50 18.1   ~ 249 1
21 4C 28.07 QSO 02 37 52.40567519 +28 48 08.9899986     19.30 16.99   ~ 612 1
22 QSO B0235+1624 BLL 02 38 38.93010450 +16 36 59.2745528   16.46 15.50 15.92   ~ 1543 2
23 NGC 1052 Sy2 02 41 04.79849989 -08 15 20.7519527 11.84 11.41 10.47 10.71   ~ 1298 2
24 ICRF J024457.6+622806 Sy1 02 44 57.6967097952 +62 28 06.517098084   12.15 12.19     ~ 288 1
25 4C 47.08 BLL 03 03 35.24221958 +47 16 16.2754726   17.54 16.95 16.2   ~ 272 1
26 NGC 1218 Sy1 03 08 26.22380005 +04 06 39.3007808   12.84       ~ 381 1
27 ICRF J031301.9+412001 Sy1 03 13 01.96212044 +41 20 01.1834497   18.0   14.59   ~ 166 0
28 3C 84 Sy2 03 19 48.1599902040 +41 30 42.108850836   13.10 12.48 11.09   ~ 4005 3
29 6C 033321+320838 Bla 03 36 30.10760267 +32 18 29.3422162     17.50 16.6   ~ 654 1
30 QSO B0336-0156 QSO 03 39 30.93778633 -01 46 35.8041892   18.96 18.41 17.33   ~ 557 1
31 QSO B0403-132A BLL 04 05 34.00339116 -13 08 13.6909309   17.37 17.09 16.6   ~ 358 1
32 QSO B0414-189 QSO 04 16 36.54444889 -18 51 08.3402457   18.89 18.0 18.51   ~ 175 1
33 3C 111 Sy1 04 18 21.2772425736 +38 01 35.801359968   19.75 18.05     ~ 950 1
34 QSO B0420-0127 QSO 04 23 15.80072217 -01 20 33.0656073   17.50 17.00 16.28   ~ 1207 3
35 QSO B0422+004 BLL 04 24 46.8421990080 +00 36 06.329375028 16.15 15.94 16.98     ~ 358 1
36 2C 396 QSO 04 32 36.50262174 +41 38 28.4497778     20.0     ~ 222 1
37 Mrk 1506 Sy1 04 33 11.0956735296 +05 21 15.619461552   15.72 15.05 10.08   ~ 1999 2
38 QSO B0430+2859 BLL 04 33 37.82985981 +29 05 55.4770576   19.0 17.80 17.06   ~ 160 1
39 QSO B0440-003 Bla 04 42 38.66072366 -00 17 43.4209582   19.59 19.22 17.85   ~ 399 1
40 QSO B0446+113 BLL 04 49 07.67110194 +11 21 28.5963618     20.00 18.58   ~ 265 1
41 4C -02.19 QSO 05 01 12.80988538 -01 59 14.2564557   19.1 18.06 19.04   ~ 585 1
42 QSO B0454+844 BLL 05 08 42.36351222 +84 32 04.5441733     16.5 18.95   ~ 242 1
43 QSO J0530+13 Bla 05 30 56.41674741 +13 31 55.1494688     20.00 19.35   ~ 959 1
44 QSO B0529+075 QSO 05 32 38.9985483000 +07 32 43.344156480   19.0 19.00 17.50   ~ 224 1
45 6C 052928+482031 QSO 05 33 15.86579115 +48 22 52.8077787     19.90     ~ 128 1
46 7C 055201.39+394824.00 Bla 05 55 30.80561419 +39 48 49.1649683     18.30 17.5   ~ 505 2
47 QSO B0605-0834 BLL 06 07 59.69924014 -08 34 49.9783246     17.60 17.70   ~ 460 1
48 QSO B0607-157 QSO 06 09 40.94954062 -15 42 40.6727537   18.47 18.00 19.90   ~ 315 1
49 7C 064253.00+445430.00 QSO 06 46 32.02599653 +44 51 16.5901185   19.57 18.49 18.64   ~ 348 1
50 QSO J0650-1637 QSO 06 50 24.58185949 -16 37 39.7255562   22.09       ~ 113 1
51 4C 47.23 BLL 07 10 46.10488160 +47 32 11.1426490   18.2 18.2 13.9   ~ 152 1
52 QSO B0710+439 QSO 07 13 38.16413557 +43 49 17.2072102   20.7       ~ 244 0
53 8C 0716+714 BLL 07 21 53.4482942664 +71 20 36.363846516   15.5 15.50 14.27   ~ 1298 1
54 QSO B0723-007 BLL 07 25 50.63991258 -00 54 56.5430511   17.39 16.57 15.82   ~ 265 1
55 QSO J0730-116 QSO 07 30 19.11247452 -11 41 12.6006642     20.30 20.3   ~ 300 1
56 ICRF J073352.5+502209 Sy1 07 33 52.52058088 +50 22 09.0622668     19.30 18.37   ~ 111 1
57 QSO J0738+1742 BLL 07 38 07.39375312 +17 42 18.9981506   16.76 16.22 15.78   ~ 992 1
58 QSO B0736+01 QSO 07 39 18.03389906 +01 37 04.6177501   16.90 16.47 16.19   ~ 687 1
59 ICRF J074110.7+311200 Sy1 07 41 10.70330407 +31 12 00.2291151   17.02 16.89 16.322   ~ 450 1
60 QSO B0742+103 QSO 07 45 33.05952486 +10 11 12.6922178     24.00 23.72   ~ 192 1
61 QSO B0748+126 QSO 07 50 52.04573865 +12 31 04.8282079   17.67 17.28 17.16   ~ 334 1
62 QSO B0754+10 BLL 07 57 06.64295154 +09 56 34.8522544   15.43 15.00 15.99   ~ 439 1
63 QSO B0805-077 QSO 08 08 15.53603763 -07 51 09.8865298     19.80 16.71   ~ 262 1
64 7C 080458.39+495918.00 QSO 08 08 39.66628970 +49 50 36.5304041   19.55 19.18 18.34   ~ 362 2
65 QSO B0808+019 BLL 08 11 26.70731711 +01 46 52.2201568   17.58 17.2 17.96   ~ 241 1
66 7C 081451.89+423206.00 BLL 08 18 15.99961476 +42 22 45.4148987   18.88 18.18 17.81   ~ 400 1
67 QSO B0823+033 BLL 08 25 50.33835759 +03 09 24.5199749   17.81 17.23 16.91   ~ 328 1
68 ICRF J083052.0+241059 Sy1 08 30 52.08619250 +24 10 59.8202919   17.62 17.26 16.30   ~ 529 1
69 ICRF J083148.8+042939 Sy1 08 31 48.8770033992 +04 29 39.086842884   17.10 16.4 14.55   ~ 470 2
70 QSO B0834-201 QSO 08 36 39.21525204 -20 16 59.5042773   19.45 19.4 18.76   ~ 209 1
71 4C 71.07 Bla 08 41 24.36528508 +70 53 42.1730435     17.30 16.8   ~ 777 1
72 TXS 0847-120 Rad 08 50 09.8 -12 15 55           ~ 2 0
73 QSO J0854+2006 BLL 08 54 48.8749846272 +20 06 30.639583620   15.91 15.43 15.56   ~ 2326 1
74 QSO J0902-1415 QSO 09 02 16.8308887080 -14 15 30.874458132   16.79 16.59 16.4   ~ 241 1
75 ICRF J090910.0+012135 Sy1 09 09 10.09159883 +01 21 35.6176206   17.63 17.29 17.04   ~ 426 2
76 6C 091739+622838 QSO 09 21 36.23107643 +62 15 52.1803510   19.76 19.26 18.96   ~ 364 1
77 ICRF J092703.0+390220 Sy1 09 27 03.01394144 +39 02 20.8518067   17.17 17.00 16.486   ~ 1001 1
78 4C 40.24 QSO 09 48 55.33815103 +40 39 44.5869471   18.31 18.02 17.85   ~ 351 1
79 ICRF J095649.8+251516 Sy1 09 56 49.87537985 +25 15 16.0498155   17.46 17.21 17.96   ~ 331 1
80 US 1139 QSO 09 58 19.67164698 +47 25 07.8424065   18.78 18.62 18.39   ~ 240 1
81 6C 095456+654857 BLL 09 58 47.2451872176 +65 33 54.819354600     17.0 15.75   ~ 711 1
82 7C 1015+3557 Bla 10 18 10.98810472 +35 42 39.4409041   18.62 18.07 17.65   ~ 187 1
83 QSO B1036+054 QSO 10 38 46.77987408 +05 12 29.0867216   20.21 19.45 19.53   ~ 101 1
84 4C 06.41 BLL 10 41 17.16249940 +06 10 16.9237327   16.86 16.70 16.14   ~ 289 1
85 ICRF J104806.6-190935 Sy1 10 48 06.62062314 -19 09 35.7272070   18.59 18.20 17.10   ~ 184 1
86 ICRF J105829.6+013358 Sy1 10 58 29.60520810 +01 33 58.8237454   18.74 18.28 16.68   ~ 774 2
87 Mrk 421 BLL 11 04 27.3140835504 +38 12 31.798495872   13.50 12.90 8.31   ~ 2670 1
88 QSO B1124-186 QSO 11 27 04.39245388 -18 57 17.4418445   19.17 18.65 19.23   ~ 229 1
89 QSO J1130-1449 Bla 11 30 07.0523452128 -14 49 27.388021944   17.17 16.90 16 16.97 ~ 707 1
90 ICRF J113130.5-050019 QSO 11 31 30.51675435 -05 00 19.6574728   20.0   19.20   ~ 75 1
91 4C -00.47 QSO 11 50 43.8706351104 -00 23 54.203006868   17.51 17.38 17.1   ~ 367 1
92 8C 1150+812 QSO 11 53 12.49922322 +80 58 29.1545718     19.40 18.54   ~ 237 1
93 Ton 599 Sy1 11 59 31.83391383 +29 14 43.8268224   14.80 14.41 17.652 13.39 ~ 924 1
94 QSO B1213-172 QSO 12 15 46.75176509 -17 31 45.4031219     21.40 17.50   ~ 142 1
95 7C 1219+2830 BLL 12 21 31.6904439888 +28 13 58.500308172   16.81 16.11 14.24   ~ 873 1
96 ICRF J122222.5+041315 Sy1 12 22 22.54962606 +04 13 15.7760715   17.88 17.98 17.06   ~ 322 1
97 ICRF J122454.4+212246 Sy1 12 24 54.4583146056 +21 22 46.385507388   17.56 17.50 18.2   ~ 702 2
98 3C 273 BLL 12 29 06.6998257176 +02 03 08.597629980   13.05 14.830 14.11   ~ 5797 1
99 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7181 3
100 QSO J1246-0730 QSO 12 46 04.23211565 -07 30 46.5746985   17.6 18.0 18.2   ~ 186 1
101 3C 279 Bla 12 56 11.16657958 -05 47 21.5251510   18.01 17.75 15.87   ~ 3041 2
102 ICRF J130533.0-103319 Sy1 13 05 33.0150535680 -10 33 19.430383680   15.18 15.23 14.46   ~ 577 1
103 US 371 BLL 13 10 28.66385420 +32 20 43.7828340   15.61 15.24 17.91   ~ 852 1
104 QSO B1324+224 QSO 13 27 00.86131319 +22 10 50.1628385     18.90 18.80   ~ 170 1
105 QSO B1331+170 Bla 13 33 35.7827544072 +16 49 04.013500728   16.84 16.71 16.41   ~ 453 0
106 QSO B1334-127 Bla 13 37 39.78278132 -12 57 24.6933925   18.5 19.00 16.22   ~ 502 1
107 ICRF J134733.3+121724 Sy2 13 47 33.36161873 +12 17 24.2398927   19.28 18.44 15.718   ~ 597 3
108 Mrk 668 Sy1 14 07 00.39441712 +28 27 14.6901341   16.13 15.35 10.29   ~ 773 2
109 QSO B1406-076 QSO 14 08 56.48120623 -07 52 26.6665312   20.3 18.4     ~ 313 1
110 ICRF J141558.8+132023 Sy2 14 15 58.81751033 +13 20 23.7128587   21.055 20.000 18.461   ~ 437 1
111 ICRF J141946.5+542314 Sy2 14 19 46.5974051952 +54 23 14.787857796   16.17 15.65 14.16   ~ 595 1
112 6C 141743+383524 QSO 14 19 46.61376262 +38 21 48.4750288   19.88 19.66 19.25   ~ 175 1
113 ICRF J145907.5+714019 Sy1 14 59 07.58390804 +71 40 19.8668093   17.24 16.78 17.2   ~ 493 1
114 QSO B1502+1041 Bla 15 04 24.97978391 +10 29 39.1985309   18.97 18.56 18.94   ~ 574 1
115 QSO B1504-167 QSO 15 07 04.78696269 -16 52 30.2671543   18.40 18.50 17.00   ~ 230 1
116 4C -05.64 QSO 15 10 53.59142427 -05 43 07.4175000   17.44 17.21     ~ 229 1
117 ICRF J151141.2+051809 Sy2 15 11 41.26637844 +05 18 09.2590927   18.49 17.80 13.95   ~ 108 0
118 QSO J1512-0906 Bla 15 12 50.53293048 -09 05 59.8297908   16.74 16.54     ~ 1316 1
119 ICRF J151640.2+001501 Sy2 15 16 40.21905672 +00 15 01.9090936   17.28 16.64 10.53   ~ 197 1
120 QSO B1514-24 BLL 15 17 41.8134049824 -24 22 19.482207024   15.13 14.00 13.95   ~ 769 3
121 QSO B1532+016 QSO 15 34 52.45368345 +01 31 04.2065145   19.0 18.5 18.58   ~ 202 2
122 ICRF J154049.4+144745 Sy1 15 40 49.49151924 +14 47 45.8846989   17.72 17.30 17.240   ~ 421 1
123 QSO B1546+0246 Bla 15 49 29.43684740 +02 37 01.1632556   17.57 17.42 15.53   ~ 364 1
124 4C 05.64 QSO 15 50 35.26924234 +05 27 10.4483641   19.10 18.73 19.02   ~ 346 1
125 4C 10.45 QSO 16 08 46.20318700 +10 29 07.7757424   18.5 18.70 18.03   ~ 383 1
126 ICRF J160913.3+264129 Sy2 16 09 13.3196 +26 41 29.042   19       ~ 237 0
127 6C 161147+342017 QSO 16 13 41.06424322 +34 12 47.9088535   17.98 17.46 17.07   ~ 642 1
128 NGC 6251 Sy2 16 32 31.96989253 +82 32 16.3999044 15.24 14.66 12.89 7.62   ~ 727 0
129 4C 38.41 QSO 16 35 15.49297809 +38 08 04.5005995   18.14 17.97 17.25   ~ 857 1
130 ICRF J163813.4+572023 Sy1 16 38 13.45629995 +57 20 23.9789828     16.90 16.94   ~ 359 1
131 6C 163852+395305 QSO 16 40 29.63277140 +39 46 46.0284071   18.4 19.37 18.75   ~ 315 2
132 4C 69.21 QSO 16 42 07.84851261 +68 56 39.7563611   19.723   19.219   ~ 304 1
133 NAME Her B Sy1 16 42 58.80997043 +39 48 36.9939552   16.81 16.59 16.84   ~ 1724 2
134 7C 165211.80+395026.00 BLL 16 53 52.21668403 +39 45 36.6088754 14.09 14.15 13.29 8.26   ~ 2158 2
135 QSO J1658+0741 QSO 16 58 09.01146680 +07 41 27.5404484   19.993 20.00 19.598   ~ 171 1
136 7C 172601.30+453309.00 BLL 17 27 27.65080202 +45 30 39.7312530   19.0 18.10 16.64   ~ 208 1
137 ICRF J172824.9+042704 Sy1 17 28 24.95272284 +04 27 04.9138307   17.43 16.99 16.24   ~ 224 1
138 QSO B1730-130 QSO 17 33 02.70578907 -13 04 49.5482119   18 19.50 18.78 17.39 ~ 1137 1
139 4C 51.37 Bla 17 40 36.97784792 +52 11 43.4073694   18.16 18.70 16.73   ~ 413 1
140 QSO B1741-038 QSO 17 43 58.85613537 -03 50 04.6167326     20.40 17.98   ~ 548 1
141 7C 1749+7006 BLL 17 48 32.8402992264 +70 05 50.768819304   17.46 17.01 15.48   ~ 429 1
142 4C 09.57 BLL 17 51 32.81857326 +09 39 00.7284066   17.46 16.78 15.57   ~ 942 1
143 QSO J1753+2848 QSO 17 53 42.47364223 +28 48 04.9388788   19.6 19.60 20.28   ~ 106 1
144 7C 175844.60+384828.00 QSO 18 00 24.76536016 +38 48 30.6974570   17.8 17.98 17.04   ~ 151 1
145 8C 1803+784 BLL 18 00 45.6838528560 +78 28 04.018028016   16.4 15.90 15.46   ~ 740 1
146 7C 180003.10+440418.00 QSO 18 01 32.31481983 +44 04 21.9002442   16.8 17.90 15.29   ~ 207 1
147 3C 371 BLL 18 06 50.6802916920 +69 49 28.109609256   14.77 14.22 11.39   ~ 856 2
148 4C 56.27 BLL 18 24 07.06837171 +56 51 01.4908155   18.9 19.30 16.48   ~ 482 1
149 ICRF J182931.7+484446 Sy1 18 29 31.7809732968 +48 44 46.160168892   17.05 16.81 16.860   ~ 688 1
150 ICRF J184208.9+794617 Sy1 18 42 08.9904975672 +79 46 17.127835104   16.06 15.38     ~ 1316 0
151 [OKM2018] SWIFT J1848.5+6704 Sy1 18 49 16.07228484 +67 05 41.6802599     16.90 17.45   ~ 269 1
152 ICRF J190255.9+315941 Sy1 19 02 55.93889653 +31 59 41.7016439     17.5     ~ 271 2
153 QSO B1908-202 QSO 19 11 09.65289294 -20 06 55.1090664   18.21   18.14   ~ 282 0
154 4C 73.18 BLL 19 27 48.4947009120 +73 58 01.572558816     16.06 15.11   ~ 534 2
155 QSO B1936-155 QSO 19 39 26.65775171 -15 25 43.0584711   19.44 20.30 18.80   ~ 169 1
156 NAME Cyg A Sy2 19 59 28.35656837 +40 44 02.0972325   16.22 15.10     ~ 2365 2
157 QSO B1958-179 QSO 20 00 57.09043927 -17 48 57.6726139   18.02 18.60 15.33   ~ 267 1
158 QSO B2005+40 QSO 20 07 44.9449261536 +40 29 48.603352020   18.5 19.00 20.3   ~ 301 1
159 QSO B2008-159 Bla 20 11 15.71092555 -15 46 40.2537406   17.27 18.30 16.35   ~ 176 1
160 ICRF J202206.6+613658 Sy2 20 22 06.68174620 +61 36 58.8047323     19.00 17.58   ~ 321 1
161 4C 31.56 QSO 20 23 19.01734326 +31 53 02.3060318           ~ 115 1
162 QSO B2022-077 BLL 20 25 40.6602562440 -07 35 52.688047128   18.5       ~ 207 3
163 3C 418.0 QSO 20 38 37.03472279 +51 19 12.6624988   21.30 21.00 18.9   ~ 311 0
164 ICRF J204237.3+750802 Sy1 20 42 37.3079247456 +75 08 02.445851940     14.46 13.80   ~ 257 0
165 QSO J2115+295 QSO 21 15 29.41345155 +29 33 38.3669390     19.5 19.26   ~ 173 1
166 QSO J2123+0535 QSO 21 23 44.51739933 +05 35 22.0930238   18.3 20.40 19.86   ~ 294 1
167 QSO B2126-15 Bla 21 29 12.17589329 -15 38 41.0419083   17.61 17.3 17.3   ~ 504 1
168 QSO B2128-123 BLL 21 31 35.2617909696 -12 07 04.795364172   16.33 16.11 15.87   ~ 455 1
169 4C -02.81 BLL 21 34 10.30958988 -01 53 17.2389056   18.6 19.00 18.87   ~ 381 1
170 QSO B2134+0028 QSO 21 36 38.58632232 +00 41 54.2128562   17.30 17.08 17.02   ~ 562 2
171 QSO B2136+1410 QSO 21 39 01.30926630 +14 23 35.9921774     18.90 18.22   ~ 248 1
172 ICRF J214335.5+174348 Sy1 21 43 35.54456275 +17 43 48.7875890   15.91 15.73 15.17   ~ 389 1
173 4C 06.69 Bla 21 48 05.45866779 +06 57 38.6041877   16.85 16.47 15.06   ~ 675 1
174 QSO B2155-152 QSO 21 58 06.28188411 -15 01 09.3284729   18.63 18.30 17.79   ~ 334 1
175 NAME BL Lac BLL 22 02 43.2913536816 +42 16 39.979416792   15.66 14.72     ~ 2258 1
176 4C 31.63 BLL 22 03 14.9756830008 +31 45 38.269473228   15.85 15.58 14.33   ~ 495 1
177 QSO B2201+1711 BLL 22 03 26.89368237 +17 25 48.2477620     19.50 14.76   ~ 204 1
178 QSO B2209+236 QSO 22 12 05.96631459 +23 55 40.5438259   19 20.66 19.69   ~ 230 1
179 4C -03.79 QSO 22 18 52.03772044 -03 35 36.8795441   16.93 16.38 16.15   ~ 341 1
180 3C 446 BLL 22 25 47.25929101 -04 57 01.3907626   18.83 18.39 16.3   ~ 830 1
181 QSO B2227-0848 Bla 22 29 40.08433313 -08 32 54.4355294   17.80 17.41 17.81   ~ 360 1
182 4C 11.69 Bla 22 32 36.40890093 +11 43 50.9040592   17.75 17.33     ~ 1118 2
183 QSO J2246-1206 QSO 22 46 18.23197022 -12 06 51.2775983   16.63 16.45 15.99   ~ 283 1
184 3C 454.3 Bla 22 53 57.7480438728 +16 08 53.561508864   16.57 16.10 15.22   ~ 2844 2
185 QSO B2254+0727 BLL 22 57 17.30311778 +07 43 12.3025633   17.07 16.36     ~ 303 1
186 QSO B2320-035 QSO 23 23 31.95375055 -03 17 05.0238540   18.6   18.16   ~ 205 1
187 ICRF J233412.8+073627 Sy1 23 34 12.8282052264 +07 36 27.551607552   16.0 16.04 16.45   ~ 132 1
188 QSO B2345-167 QSO 23 48 02.60851466 -16 31 12.0222546   18.00 18.41 16.86   ~ 405 1
189 4C 45.51 QSO 23 54 21.68022501 +45 53 04.2365520   20.6 20.60 19.1   ~ 230 1
190 QSO B2356+196 QSO 23 58 46.0850683944 +19 55 20.303702724     18.0 17.37   ~ 135 1

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