1998AJ....115.1295K


Query : 1998AJ....115.1295K

1998AJ....115.1295K - Astron. J., 115, 1295-1318 (1998/April-0)

Sub-milliarcsecond imaging of quasars and active galactic nuclei.

KELLERMANN K.I., VERMEULEN R.C., ZENSUS J.A. and COHEN M.H.

Abstract (from CDS):

We have used the Very Long Baseline Array at 15 GHz to image the structure of 132 strong compact active galactic nuclei (AGNs) and quasars with a resolution better than 1 mas and a dynamic range typically exceeding 1000:1. These observations were made as part of a program to investigate the subparsec structure of quasars and AGNs and to study the changes in their structure with time. Many of the sources included in our study, particularly those located south of declination +35°, have not been previously imaged with milliarcsecond resolution. Each of the sources has been observed at multiple epochs. In this paper, we show images of each of the 132 sources that we have observed. For each source we present data at the epoch that had the best quality data. In a future paper we will discuss the kinematics derived from the observations at all epochs.

Most of the sources we have observed show the canonical core-jet morphology with structure somewhat characteristic of the jets seen on arcsecond scales with the Very Large Array and Westerbork telescopes. The milliarcsecond jets generally appear one-sided, but two-sided structure is often found in lower luminosity radio galaxies and in high-luminosity quasars with gigahertz-peaked spectra. In many cases there is significant curvature, sometimes up to 90° or more, particularly close to the core. In other cases the jets have a more gradual curvature. In some sources there are multiple bends or twists along the jet, suggestive of a three-dimensional curved structure. Many of the jets may be described by a small number of apparently discrete components, but in other cases there appears to be a monotonically decreasing distribution of radio emission. Usually the structure is unresolved along the direction perpendicular to the jet, but a few sources have broad plumes. Much of the visible parsec-scale structure in compact radio sources can probably be explained as the projection of a relativistic beamed, twisted jet, which appears bright at those positions where it approaches the viewer. In some low-luminosity radio galaxies, the structure appears more symmetric at 2 cm than at longer wavelengths. The apparent long-wavelength asymmetry in these sources is probably due to absorption by intervening ionized material. A few sources contain only a single component, with any secondary feature at least 1000 times weaker. Peak rest-frame brightness temperatures are typically of the order of 1011-1012 K, with no evidence for any excess over the limit of 1012 K expected from inverse Compton cooling. We find no obvious correlation of radio morphology and the detection of gamma-ray emission by EGRET.


Abstract Copyright:

Journal keyword(s): Galaxies: Active - Galaxies: Jets - Galaxies: Nuclei

Simbad objects: 131

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Number of rows : 131
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 QSO B0003-066 BLL 00 06 13.8928497048 -06 23 35.332689228   19.1   17.14   ~ 301 1
2 Mrk 1501 Sy1 00 10 31.0059809184 +10 58 29.506054872   15.96 15.40 12.22   ~ 677 0
3 QSO B0016+73 QSO 00 19 45.7863851568 +73 27 30.018073212     19.0 18.26   ~ 283 1
4 ICRF J002914.2+345632 AGN 00 29 14.24246572 +34 56 32.2471186   20.2       ~ 127 1
5 5C 3.50 QSO 00 38 24.8414398200 +41 37 06.009470436   19.9 19.9 18.95   ~ 126 1
6 QSO B0048-09 BLL 00 50 41.3172421464 -09 29 05.210474100 16.74 16.39 16.22 16.14   ~ 434 2
7 NGC 315 LIN 00 57 48.8590525608 +30 21 08.842041360 12.80 12.20 11.16 11.26   ~ 750 2
8 4C 01.02 QSO 01 08 38.7711625632 +01 35 00.318640596   18.54 18.39 19.05   ~ 496 1
9 QSO B0112-0142 QSO 01 15 17.0998793424 -01 27 04.579324416   17 17.235 17.81   ~ 209 1
10 QSO B0119+041 QSO 01 21 56.8612353744 +04 22 24.734216064   19.2 19.5 19.40   ~ 176 1
11 QSO B0133+476 Bla 01 36 58.5947351640 +47 51 29.099491848     18.0 19.25 15.21 ~ 468 1
12 QSO B0149+218 QSO 01 52 18.0587265528 +22 07 07.696343460     18 18.89   ~ 150 1
13 QSO B0153+744 BLL 01 57 34.9650498168 +74 42 43.225049844   16 16.0 16.7   ~ 202 1
14 4C 15.05 Bla 02 04 50.41389571 +15 14 11.0436591   21.9 22.1 21.00   ~ 384 1
15 7C 020209.69+315812.00 QSO 02 05 04.9251427344 +32 12 30.093761736     18.00 17.40   ~ 208 1
16 6C 021252+733537 BLL 02 17 30.8129232696 +73 49 32.622815712     19.0 18.97   ~ 425 1
17 QSO B0218+357 QSO 02 21 05.4920852208 +35 56 13.848581904   20.0 20.0 19.60   ~ 530 3
18 4C 28.07 QSO 02 37 52.4057664048 +28 48 08.990026884     18.5 16.99   ~ 556 1
19 QSO B0235+1624 BLL 02 38 38.9300958576 +16 36 59.276150136   16.46 15.50 15.92   ~ 1455 2
20 NGC 1052 GiP 02 41 04.7997864552 -08 15 20.761481016 11.84 11.41 10.47 10.71   ~ 1233 2
21 ICRF J031857.8+162832 AGN 03 18 57.8028254 +16 28 32.689683     22.0     ~ 197 1
22 4C 32.14 QSO 03 36 30.1074972672 +32 18 29.341371132     17.50 16.6   ~ 610 1
23 QSO B0336-0156 QSO 03 39 30.9376270008 -01 46 35.803797420   18.96 18.41 17.33   ~ 526 1
24 4C 50.11 QSO 03 59 29.7469819512 +50 57 50.159106936           ~ 417 1
25 3C 111 Sy1 04 18 21.2772425736 +38 01 35.801359968   19.75 18.05     ~ 901 1
26 QSO B0420-0127 QSO 04 23 15.8007747432 -01 20 33.063518580   17.50 17.00 16.28   ~ 1134 3
27 Mrk 1506 Sy1 04 33 11.0956735296 +05 21 15.619461552   15.72 15.05 10.08   ~ 1927 2
28 QSO B0440-003 QSO 04 42 38.6605722792 -00 17 43.421193564   19.59 19.22 17.85   ~ 370 1
29 4C -02.19 QSO 05 01 12.8099394264 -01 59 14.258630148   19.1 18.4 19.04   ~ 545 1
30 QSO B0454+844 BLL 05 08 42.3628147248 +84 32 04.544402964     16.5 18.95   ~ 235 1
31 QSO B0521-365 BLL 05 22 57.9841341216 -36 27 30.847204512   15.26 14.62 14.48   ~ 781 2
32 QSO J0530+13 Bla 05 30 56.4168902136 +13 31 55.151893344     20.0 19.35   ~ 915 1
33 7C 055201.39+394824.00 QSO 05 55 30.8055972888 +39 48 49.166341920     18.0 17.5   ~ 487 2
34 6C 060237+672110 QSO 06 07 52.6703026608 +67 20 55.412148084   20.6 20.6 20.21   ~ 91 1
35 QSO B0605-0834 BLL 06 07 59.6994046176 -08 34 49.980131256     18.5 17.70   ~ 422 1
36 QSO B0607-157 QSO 06 09 40.9493089944 -15 42 40.667570496   18.47 18.0 19.90   ~ 299 1
37 6C 061543+820331 QSO 06 26 03.0063691536 +82 02 25.567781928   17.5 17.5 18.52   ~ 152 1
38 7C 064253.00+445430.00 QSO 06 46 32.0253442416 +44 51 16.588600488   19.57 18.49 18.64   ~ 334 1
39 4C 47.23 BLL 07 10 46.1050700112 +47 32 11.135340924   18.2 18.2 13.9   ~ 131 1
40 QSO B0710+439 QSO 07 13 38.16412910 +43 49 17.2071530   20.7       ~ 238 0
41 8C 0716+714 BLL 07 21 53.4482942664 +71 20 36.363846516   15.5 14.17 14.27   ~ 1219 1
42 QSO J0730-116 QSO 07 30 19.1119137384 -11 41 12.596691444     20.30 20.3   ~ 279 1
43 QSO J0738+1742 BLL 07 38 07.3935719136 +17 42 18.998218764   16.76 16.22 15.78   ~ 944 1
44 QSO B0736+01 QSO 07 39 18.0339358560 +01 37 04.618841340   16.90 16.47 16.19   ~ 650 1
45 ICRF J074110.7+311200 Sy1 07 41 10.7033429280 +31 12 00.230596416   17.02 16.89 16.322   ~ 428 1
46 QSO B0742+103 QSO 07 45 33.05952141 +10 11 12.6923363       23.72   ~ 186 1
47 QSO B0745+241 QSO 07 48 36.1087026816 +24 00 24.109630416   19.70 18.89 17.88   ~ 191 1
48 QSO B0748+126 QSO 07 50 52.0455280992 +12 31 04.828034820   17.67 17.28 17.16   ~ 302 1
49 QSO B0754+10 BLL 07 57 06.6427726320 +09 56 34.848603888   15.43 15.00 15.99   ~ 418 1
50 7C 080458.39+495918.00 QSO 08 08 39.6660148632 +49 50 36.535256700   19.55 19.18 18.34   ~ 338 2
51 QSO B0808+019 BLL 08 11 26.7071025192 +01 46 52.220897436   17.58 17.2 17.96   ~ 216 1
52 7C 081451.89+423206.00 BLL 08 18 15.9997819800 +42 22 45.414412572   18.88 18.18 17.81   ~ 371 1
53 QSO B0823+033 BLL 08 25 50.3384535600 +03 09 24.523229736   17.81 17.23 16.91   ~ 306 1
54 QSO B0829+047 BLL 08 31 48.8770033992 +04 29 39.086842884   17.10 16.4 14.55   ~ 440 2
55 4C 58.17 QSO 08 54 41.9965316472 +57 57 29.939360472   18.56 18.18 17.43   ~ 218 1
56 QSO J0854+2006 BLL 08 54 48.8749846272 +20 06 30.639583620   15.91 15.43 15.56   ~ 2182 1
57 QSO J0902-1415 QSO 09 02 16.8308887080 -14 15 30.874458132   16.79 16.59 16.4   ~ 227 1
58 6C 091740+445437 QSO 09 20 58.4583974280 +44 41 53.986407072   18.40 18.16 16.55   ~ 346 1
59 ICRF J092703.0+390220 Sy1 09 27 03.0138528936 +39 02 20.850343332   17.17 17.00 16.486   ~ 961 1
60 4C 40.24 QSO 09 48 55.3382263320 +40 39 44.589392532   18.31 18.02 17.85   ~ 321 1
61 ICRF J095649.8+251516 Sy1 09 56 49.8756920040 +25 15 16.049435040   17.46 17.21 17.96   ~ 298 1
62 ICRF J101447.0+230116 Sy1 10 14 47.0656249344 +23 01 16.569849468   17.85 17.78 16.22   ~ 184 1
63 7C 1015+3557 QSO 10 18 10.9882954032 +35 42 39.437279604   18.62 18.07 17.65   ~ 158 1
64 4C 21.28 QSO 10 51 48.7882723152 +21 19 52.315780584     18.5 17.72   ~ 136 1
65 4C 20.24 QSO 10 58 17.9007317832 +19 51 50.872721328   17.51 17.07 17.28   ~ 199 1
66 4C 01.28 BLL 10 58 29.6054370384 +01 33 58.820502924   18.74 18.28 16.68   ~ 716 2
67 Mrk 421 BLL 11 04 27.3140835504 +38 12 31.798495872   13.50 12.90 8.31   ~ 2534 1
68 QSO J1130-1449 QSO 11 30 07.0523452128 -14 49 27.388021944   17.17 16.90 16 16.97 ~ 663 1
69 QSO B1128+385 QSO 11 30 53.2825598016 +38 15 18.551693556   19.11 18.80 19.42   ~ 185 1
70 ICRF J115825.7+245017 Sy1 11 58 25.7882052360 +24 50 17.973130236   20.27 19.40 16.58   ~ 73 1
71 Ton 599 QSO 11 59 31.8338889192 +29 14 43.826803116   14.80 14.41 17.652 13.39 ~ 855 1
72 7C 1219+2830 BLL 12 21 31.6904439888 +28 13 58.500308172   16.81 16.11 14.24   ~ 817 1
73 3C 273 BLL 12 29 06.6998257176 +02 03 08.597629980   13.05 14.830 14.11   ~ 5584 1
74 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6704 3
75 3C 279 Bla 12 56 11.1663795384 -05 47 21.528432492   18.01 17.75 15.87   ~ 2888 2
76 ICRF J130533.0-103319 Sy1 13 05 33.0150535680 -10 33 19.430383680   15.18 15.23 14.46   ~ 544 1
77 7C 1308+3236 BLL 13 10 28.6639899312 +32 20 43.774028664   15.61 15.24 17.91   ~ 803 1
78 4C 32.44 QSO 13 26 16.5156056760 +31 54 09.481248180   21.367 19.822 18.882   ~ 163 1
79 3C 287 QSO 13 30 37.6960744824 +25 09 10.983105972   18.31 17.67     ~ 343 1
80 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4092 2
81 QSO B1334-127 QSO 13 37 39.7829208840 -12 57 24.693846264   18.5 18.5 16.22   ~ 459 1
82 QSO B1404+286 BLL 14 07 00.3941769384 +28 27 14.692128372   16.13 15.35 10.29   ~ 729 2
83 QSO B1413+135 BLL 14 15 58.81750938 +13 20 23.7129069   21.055 20.000 18.461   ~ 405 1
84 6C 142433+363850 QSO 14 26 37.0868327352 +36 25 09.564540924   20.44 19.93 20.27   ~ 59 1
85 4C -05.64 QSO 15 10 53.5915864584 -05 43 07.417490736   17.44 17.21     ~ 203 1
86 QSO J1512-0906 Bla 15 12 50.5330369584 -09 05 59.830296360   16.74 16.54     ~ 1236 1
87 QSO B1532+016 QSO 15 34 52.4540983176 +01 31 04.205615016   19.0 18.5 18.58   ~ 181 2
88 QSO B1546+0246 QSO 15 49 29.4369280464 +02 37 01.161302952   17.57 17.42 15.53   ~ 331 1
89 4C 05.64 QSO 15 50 35.2692689760 +05 27 10.455019380   19.10 18.73 19.02   ~ 303 1
90 4C 10.45 QSO 16 08 46.2032041032 +10 29 07.779419592   18.5 18.0 18.03   ~ 355 1
91 6C 161147+342017 QSO 16 13 41.0642858568 +34 12 47.910181572   17.98 17.46 17.07   ~ 601 1
92 4C 38.41 QSO 16 35 15.4928147784 +38 08 04.499799360   18.14 17.97 17.25   ~ 804 1
93 6C 163852+395305 QSO 16 40 29.6332404024 +39 46 46.030865700   18.4 16.5 18.75   ~ 289 2
94 4C 69.21 QSO 16 42 07.8484347528 +68 56 39.767837172   19.723   19.219   ~ 291 1
95 4C 39.49 BLL 16 53 52.2160772976 +39 45 36.613228860 14.09 14.15 13.29 8.26   ~ 2034 2
96 6C 165641+474241 QSO 16 58 02.7795096192 +47 37 49.230782652   17.93 17.70 17.02   ~ 105 1
97 QSO J1658+0741 QSO 16 58 09.0115232160 +07 41 27.544209360   19.993 19.5 19.598   ~ 161 1
98 QSO J1658+0515 QSO 16 58 33.4471896264 +05 15 16.442476596   17.00 16.54 16.21   ~ 214 1
99 QSO B1730-130 QSO 17 33 02.7055087032 -13 04 49.545516612   18 18.5 18.78 17.39 ~ 1067 1
100 QSO B1741-038 QSO 17 43 58.8561752304 -03 50 04.618401684     18.5 17.98   ~ 509 1
101 7C 1749+7006 BLL 17 48 32.8402992264 +70 05 50.768819304   17.46 17.01 15.48   ~ 402 1
102 4C 09.57 BLL 17 51 32.8186120872 +09 39 00.728629416   17.46 16.78 15.57   ~ 884 1
103 7C 175844.60+384828.00 QSO 18 00 24.7653461736 +38 48 30.697069572   17.8 17.8 17.04   ~ 139 1
104 8C 1803+784 BLL 18 00 45.6838528560 +78 28 04.018028016   16.4 16.4 15.46   ~ 696 1
105 7C 180003.10+440418.00 QSO 18 01 32.3150148024 +44 04 21.895465224   16.8 16.8 15.29   ~ 184 1
106 3C 371 BLL 18 06 50.6802916920 +69 49 28.109609256   14.77 14.22 11.39   ~ 819 2
107 4C 56.27 BLL 18 24 07.0679485560 +56 51 01.479645612   18.9 18.4 16.48   ~ 454 1
108 ICRF J184208.9+794617 Sy1 18 42 08.9904975672 +79 46 17.127835104   16.06 15.38     ~ 1261 0
109 ICRF J190255.9+315941 Sy1 19 02 55.9388845368 +31 59 41.699274720     17.5     ~ 262 2
110 QSO B1921-293 BLL 19 24 51.0555700728 -29 14 30.118109640   18.71 18.21 15.07   ~ 776 0
111 4C 73.18 BLL 19 27 48.4947009120 +73 58 01.572558816     15.5 15.11   ~ 507 2
112 NAME Cyg A Sy2 19 59 28.35645829 +40 44 02.0966496   16.22 15.10     ~ 2247 2
113 8C 2007+777 BLL 20 05 30.9987913056 +77 52 43.248139536     16.5 17.36   ~ 421 1
114 QSO B2005+40 QSO 20 07 44.9449261536 +40 29 48.603352020   18.5 19 20.3   ~ 282 1
115 ICRF J202206.6+613658 Sy2 20 22 06.6835988160 +61 36 58.816893852     19.5 17.58   ~ 310 1
116 4C 31.56 QSO 20 23 19.0172320680 +31 53 02.305685400           ~ 105 1
117 QSO J2115+295 QSO 21 15 29.4133345104 +29 33 38.366174628     19.5 19.26   ~ 151 1
118 4C -02.81 BLL 21 34 10.3103777568 -01 53 17.234980584   18.6 19.0 18.87   ~ 347 1
119 QSO B2134+0028 QSO 21 36 38.5863558336 +00 41 54.211758468   17.30 17.08 17.02   ~ 544 2
120 QSO B2136+1410 QSO 21 39 01.3093296432 +14 23 35.988162648     18.5 18.22   ~ 241 1
121 QSO B2144+093 QSO 21 47 10.1628820968 +09 29 46.674940992   18.72 18.54 16.51   ~ 188 1
122 4C 06.69 QSO 21 48 05.4586454304 +06 57 38.602799388   16.85 16.47 15.06   ~ 629 1
123 NAME BL Lac BLL 22 02 43.2913536816 +42 16 39.979416792   15.66 14.72     ~ 2137 1
124 4C 31.63 BLL 22 03 14.9756830008 +31 45 38.269473228   15.85 15.58 14.33   ~ 474 1
125 BWE 2209+2340 QSO 22 12 05.9664991416 +23 55 40.543886604   19   19.69   ~ 203 1
126 3C 446 BLL 22 25 47.2594205952 -04 57 01.390436856   18.83 18.39 16.3   ~ 792 1
127 4C 11.69 QSO 22 32 36.4089639768 +11 43 50.904601176   17.75 17.33     ~ 1047 2
128 QSO B2232+282 BLL 22 36 22.4708346336 +28 28 57.411659856   19.1 19.0 17.60   ~ 237 1
129 QSO J2246-1206 QSO 22 46 18.2322488304 -12 06 51.278055084   16.63 16.45 15.99   ~ 270 1
130 3C 454.3 Bla 22 53 57.7480438728 +16 08 53.561508864   16.57 16.10 15.22   ~ 2690 2
131 QSO B2345-167 QSO 23 48 02.6085903648 -16 31 12.023178096   18.00 18.41 16.86   ~ 377 1

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2022.08.10-07:46:27

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