2019A&A...622A..92N

Query : 2019A&A...622A..92N

2019A&A...622A..92N - Astronomy and Astrophysics, volume 622A92-92 (2019/2-1)

Global millimeter VLBI array survey of ultracompact extragalactic radio sources at 86 GHz.

NAIR D.G., LOBANOV A.P., KRICHBAUM T.P., ROS E., ZENSUS J.A., KOVALEV Y.Y., LEE S.-S., MERTENS F., HAGIWARA Y., BREMER M., LINDQVIST M. and DE VICENTE P.

Abstract (from CDS):


Context. Very long baseline interferometry (VLBI) observations at 86GHz (wavelength, λ=3mm) reach a resolution of about 50 µas, probing the collimation and acceleration regions of relativistic outflows in active galactic nuclei (AGN). The physical conditions in these regions can be studied by performing 86GHz VLBI surveys of representative samples of compact extragalactic radio sources.
Aims. To extend the statistical studies of compact extragalactic jets, a large global 86GHz VLBI survey of 162 compact radio sources was conducted in 2010-2011 using the Global Millimeter VLBI Array (GMVA).
Methods. The survey observations were made in a snapshot mode, with up to five scans per target spread over a range of hour angles in order to optimize the visibility coverage. The survey data attained a typical baseline sensitivity of 0.1Jy and a typical image sensitivity of 5mJy/beam, providing successful detections and images for all of the survey targets. For 138 objects, the survey provides the first ever VLBI images made at 86GHz. Gaussian model fitting of the visibility data was applied to represent the structure of the observed sources and to estimate the flux densities and sizes of distinct emitting regions (components) in their jets. These estimates were used for calculating the brightness temperature (Tb) at the jet base (core) and in one or more moving regions (jet components) downstream from the core. These model-fit-based estimates of Tb were compared to the estimates of brightness temperature limits made directly from the visibility data, demonstrating a good agreement between the two methods.
Results. The apparent brightness temperature estimates for the jet cores in our sample range from 2.5x109K to 1.3x1012K, with the mean value of 1.8x1011K. The apparent brightness temperature estimates for the inner jet components in our sample range from 7.0x107K to 4.0x1011K. A simple population model with a single intrinsic value of brightness temperature, T0, is applied to reproduce the observed distribution. It yields T0=(3.77–0.14+0.10)x1011K for the jet cores, implying that the inverse Compton losses dominate the emission. In the nearest jet components, T0=(1.42–0.19+0.16)x1011K is found, which is slightly higher than the equipartition limit of ∼5x1010K expected for these jet regions. For objects with sufficient structural detail detected, the adiabatic energy losses are shown to dominate the observed changes of brightness temperature along the jet.

Abstract Copyright: © ESO 2019

Journal keyword(s): galaxies: active - galaxies: jets - quasars: general - radio continuum: galaxies - techniques: interferometric - surveys

VizieR on-line data: <Available at CDS (J/A+A/622/A92): table5.dat table6.dat table7.dat list.dat images/* visib/*>

Simbad objects: 162

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Number of rows : 162
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 ICRF J001331.1+405137 Sy1 00 13 31.13019909 +40 51 37.1441374   17.9 17.9     ~ 130 1
2 6C 001403+811827 BLL 00 17 08.47489694 +81 35 08.1365094   17.60 16.52 15.95   ~ 405 1
3 6C 002717+702125 QSO 00 30 14.41294762 +70 37 40.0609525           ~ 24 1
4 9C J0034+2754 QSO 00 34 43.4862800448 +27 54 25.717898772   18.0   17.87   ~ 40 1
5 NVSS J004450+680302 Rad 00 44 50.75961262 +68 03 02.6859449           ~ 15 1
6 [VV98] J004607.9+245632 QSO 00 46 07.8255949224 +24 56 32.524521720     18.00     ~ 34 1
7 NGC 315 LIN 00 57 48.88334410 +30 21 08.8119345 12.80 12.20 11.16 11.26   ~ 869 2
8 7C 0059+5808 Bla 01 02 45.76237340 +58 24 11.1366164   20.09 19.22 18.57 17.90 ~ 262 1
9 ICRF J010946.3+613330 Bla 01 09 46.34438527 +61 33 30.4555283           ~ 92 1
10 6C 010924+350626 Bla 01 12 12.94440522 +35 22 19.3363978     18.87 18.02   ~ 74 2
11 6C 011029+493221 Bla 01 13 27.00680467 +49 48 24.0432101   18.4 18.4 17.80   ~ 130 1
12 6C 012227+703119 QSO 01 26 07.84361986 +70 46 52.3858461           ~ 17 1
13 6C 013354+473615 Bla 01 36 58.59480326 +47 51 29.1000720     19.50 19.25 15.21 ~ 537 1
14 ICRF J013715.6+214544 Sy1 01 37 15.62497606 +21 45 44.2712830           ~ 25 1
15 [VV96] J015456.3+474327 Bla 01 54 56.28988519 +47 43 26.5396113       18.97   ~ 55 1
16 7C 020209.69+315812.00 Bla 02 05 04.92536206 +32 12 30.0954703     17.40 17.40   ~ 246 1
17 QSO J0253+3217 Bz? 02 53 33.65014202 +32 17 20.8918653           ~ 74 1
18 ICRF J025424.7+234326 Bla 02 54 24.71813878 +23 43 26.4744695       19.75   ~ 26 0
19 [VV96] J031049.8+381453 BLL 03 10 49.87992240 +38 14 53.8378761     19.70 19.21   ~ 127 1
20 QSO B0309+411 Bla 03 13 01.96212044 +41 20 01.1834497   18.0   14.59   ~ 178 1
21 NGC 1275 Bla 03 19 48.1599902040 +41 30 42.108850836   13.10 12.48 11.09   ~ 4243 3
22 ICRF J032520.3+465506 Bz? 03 25 20.30385884 +46 55 06.6348355           ~ 18 1
23 QSO J0325+2224 Bla 03 25 36.81435345 +22 24 00.3656161     18.90 19.14   ~ 135 1
24 6C 032924+652644 BLL 03 33 56.7381995712 +65 36 56.186387964           ~ 66 1
25 NVSS J034441+682747 Rad 03 44 41.44123278 +68 27 47.8101034           ~ 14 1
26 6C 035545+504923 Bla 03 59 29.74727351 +50 57 50.1618607           ~ 480 1
27 6C 035635+321221 Bla 03 59 44.91292601 +32 20 47.1558946       19.88   ~ 42 1
28 ICRF J042805.8+325952 Bla 04 28 05.80875891 +32 59 52.0442031       21.39   ~ 50 1
29 6C 050923+403809 BLL 05 12 52.54284173 +40 41 43.6203455           ~ 68 1
30 6C 052927+482100 Bla 05 33 15.86579115 +48 22 52.8077787     19.90     ~ 150 1
31 4C 24.11 QSO 06 04 55.12138831 +24 29 55.0364698           ~ 40 1
32 NVSS J061251+412237 BLL 06 12 51.1851596976 +41 22 37.408102212       15.71   ~ 99 2
33 ICRF J061808.6+420759 QSO 06 18 08.61989995 +42 07 59.8465683           ~ 18 1
34 ICRF J063230.7+320053 Bla 06 32 30.78289237 +32 00 53.6313916       19.22   ~ 34 1
35 6C 063338+593631 Bz? 06 38 02.87192548 +59 33 22.2138567           ~ 41 1
36 8C 0633+734 Bla 06 39 21.9609776712 +73 24 58.043668788   16.0 17.3 18.22   ~ 124 1
37 ICRF J064206.1+881155 Bz? 06 42 06.13552114 +88 11 55.0155233       19.51   ~ 29 1
38 QSO B0646+600 Bla 06 50 31.25435548 +60 01 44.5549353   18.9 18.6 19.65   ~ 125 1
39 ICRF J070001.5+170921 QSO 07 00 01.52554306 +17 09 21.7013068   21.0       ~ 89 1
40 8C 0702+612 BLL 07 07 00.6153766680 +61 10 11.606117304       16.4   ~ 36 2
41 ICRF J071355.6+193500 Bla 07 13 55.67917496 +19 35 00.4089341       18   ~ 106 3
42 8C 0716+714 BLL 07 21 53.4482942664 +71 20 36.363846516   15.5 15.50 14.27   ~ 1388 1
43 6C 073002+502841 Bla 07 33 52.52058088 +50 22 09.0622668     19.30 18.37   ~ 129 1
44 6C 073759+311929 Bla 07 41 10.70330407 +31 12 00.2291151   17.02 16.89 16.322   ~ 468 1
45 ICRF J074714.6+763917 BLL 07 47 14.60758519 +76 39 17.2716619       20.28   ~ 31 0
46 QSO B0745+241 Bla 07 48 36.10928140 +24 00 24.1099425   19.70 18.89 17.88   ~ 239 1
47 4C 54.15 BLL 07 53 01.38457270 +53 52 59.6370830   18.5   16.77   ~ 173 1
48 7C 080533.60+410130.00 Bla 08 08 56.65204477 +40 52 44.8888932   19.87 19.41 16.61   ~ 149 1
49 NVSS J080941+534124 Bla 08 09 41.7314407307 +53 41 25.085077319       19.62   ~ 84 1
50 7C 081008.69+644025.00 BLL 08 14 39.1902610224 +64 31 22.026175032       16.81   ~ 90 1
51 6C 081210+364434 Bla 08 15 25.94486402 +36 35 15.1487857   18.5 18.78 18.7   ~ 145 1
52 7C 081419.39+323623.00 Bz? 08 17 28.5455 +32 27 02.928       21.62   ~ 21 2
53 4C 39.23A Bla 08 24 55.48385834 +39 16 41.9040476   18.55 18.21 17.20   ~ 238 1
54 PG 0851+202 BLL 08 54 48.8749846272 +20 06 30.639583620   15.649 15.146 15.446   ~ 2513 1
55 3C 216.0 Bla 09 09 33.49714902 +42 53 46.4821036   19.98 19.42 18.220   ~ 520 1
56 NVSS J091755+653014 Rad 09 17 55.56819057 +65 30 15.1267076           ~ 13 1
57 6C 091740+445437 Bla 09 20 58.45848666 +44 41 53.9850947   18.40 18.16 16.55   ~ 407 1
58 9C J0925+3612 QSO 09 25 51.85134440 +36 12 35.6746798           ~ 35 1
59 4C 39.25 Bla 09 27 03.01394144 +39 02 20.8518067   17.17 17.00 16.486   ~ 1036 1
60 5C 1.33 Bla 09 37 12.32736501 +50 08 52.0975584   19.51 18.94 18.88   ~ 158 1
61 ICRF J094538.1+353455 Sy1 09 45 38.12071783 +35 34 55.0887210   18.81 18.57 17.91   ~ 51 1
62 7C 095359.3+252945 Bla 09 56 49.87537985 +25 15 16.0498155   17.46 17.21 17.96   ~ 367 2
63 4C 55.17 Bla 09 57 38.1839604096 +55 22 57.754950636   18.24 17.89     ~ 459 1
64 US 1139 Bla 09 58 19.67164698 +47 25 07.8424065   18.78 18.62 18.39   ~ 264 1
65 Ton 490 Bla 10 13 53.42877250 +24 49 16.4406795   16.59 16.57 15.85   ~ 200 1
66 7C 1015+3557 Bla 10 18 10.98810472 +35 42 39.4409041   18.62 18.07 17.65   ~ 212 1
67 7C 1030+4131 Bla 10 33 03.70787172 +41 16 06.2329333   20.01 19.64 19.97   ~ 234 1
68 6C 103031+610629 Bla 10 33 51.4290959304 +60 51 07.334442756   19.31 18.86 20.24   ~ 195 2
69 7C 103522.60+430011.00 BLL 10 38 18.19054496 +42 44 42.7599552           ~ 30 1
70 ICRF J104309.0+240835 BLL 10 43 09.03578135 +24 08 35.4094642   17.98 17.32 16.40   ~ 171 1
71 6C 103912+811006 Bla 10 44 23.06257022 +80 54 39.4430485     16.5 18.29   ~ 234 1
72 QSO B1042+178A QSO 10 45 14.35977816 +17 35 48.0837677           ~ 27 1
73 QSO J1058+8114 Bla 10 58 11.53538897 +81 14 32.6751532   18.5 20.0 18.14   ~ 120 1
74 7C 1100+3031 Bla 11 03 13.30189370 +30 14 42.7023008   18.58 18.43 17.16   ~ 76 1
75 7C 112812.59+383153.00 Bla 11 30 53.28261620 +38 15 18.5469361   19.11 18.80 19.42   ~ 233 1
76 6C 114419+401458 Bla 11 46 58.29791724 +39 58 34.3043988   18.80 18.45 18.58   ~ 261 1
77 6C 114952+495559 Bla 11 52 32.8709129544 +49 39 38.768436468   17.55 17.20 17.00   ~ 67 1
78 8C 1150+812 Bla 11 53 12.49922322 +80 58 29.1545718     19.40 18.54   ~ 248 1
79 LB 2136 Bla 11 53 24.46663994 +49 31 08.8301372   17.94 17.66     ~ 529 1
80 JVAS B1157+532 Rad 12 00 06.01074 +53 00 37.1177           ~ 5 0
81 [VV2006] J120329.9+480313 BLL 12 03 29.8530293400 +48 03 13.625934552   16.7 16.55 16.8   ~ 74 1
82 87GB 121646.5+640036 Bz? 12 19 10.58312216 +63 44 10.7180027       22.50   ~ 22 1
83 7C 122223.5+213929 Bla 12 24 54.4583146056 +21 22 46.385507388   17.56 17.50 18.2   ~ 770 2
84 3C 273 BLL 12 29 06.6998257176 +02 03 08.597629980   13.05 14.830 14.11   ~ 6022 1
85 ICRF J124127.7+545819 AG? 12 41 27.70380149 +54 58 19.0524880           ~ 16 1
86 3C 279 Bla 12 56 11.16657958 -05 47 21.5251510   18.01 17.75 15.87   ~ 3205 2
87 6C 125719+515648 QSO 12 59 31.17398783 +51 40 56.2612075           ~ 48 1
88 7C 130357.10+554534.00 Bla 13 06 03.35111428 +55 29 43.8566608   18.68 18.45 18.54   ~ 72 1
89 US 371 BLL 13 10 28.66385420 +32 20 43.7828340   15.61 15.24 17.91   ~ 917 1
90 QSO B1324+224 Bla 13 27 00.86131319 +22 10 50.1628385     18.90 18.80   ~ 194 1
91 7C 132734.79+320943.00 BLL 13 29 52.86491586 +31 54 11.0544317   20.96 20.23 19.77   ~ 74 1
92 [VV98] J134115.3+281604 Bla 13 41 15.28276993 +28 16 05.0770258   20.92 20.11 18.77   ~ 55 1
93 ICRF J135323.1+753257 Bla 13 53 23.16808381 +75 32 57.7357934       17.70   ~ 39 1
94 6C 135734+765743 Bla 13 57 55.37154275 +76 43 21.0509950     19.0 20.27   ~ 134 1
95 Mrk 668 BLL 14 07 00.39441712 +28 27 14.6901341   16.13 15.35 10.29   ~ 826 3
96 6C 141743+383524 Bla 14 19 46.61376262 +38 21 48.4750288   19.88 19.66 19.25   ~ 195 1
97 ICRF J150624.7+831928 Bla 15 06 24.71517198 +83 19 28.0359152       18.84   ~ 35 1
98 6C 150504+425103 Bla 15 06 53.04184890 +42 39 23.0354724   20.78 20.28 19.30   ~ 55 1
99 9C J1521+4336 Bla 15 21 49.61387806 +43 36 39.2681695   19.30 18.95 18.09   ~ 129 1
100 QSO B1547+507 Bla 15 49 17.46855793 +50 38 05.7880702   18.89 18.74 18.16   ~ 140 1
101 5C 13.225 Bla 16 08 22.15769356 +40 12 17.8335172   21.16 20.80 19.1   ~ 54 1
102 7C 1623+5748 Bla 16 24 24.80756989 +57 41 16.2809410   18.8   19.74   ~ 49 1
103 4C 38.41 Bla 16 35 15.49297809 +38 08 04.5005995   18.14 17.97 17.25   ~ 906 1
104 4C 47.44 Bla 16 37 45.13055568 +47 17 33.8311081   17.5   18.69   ~ 183 1
105 6C 163852+395305 Bla 16 40 29.63277140 +39 46 46.0284071   18.4 19.37 18.75   ~ 336 2
106 3C 345 Bla 16 42 58.80997043 +39 48 36.9939552   16.81 16.59 16.84   ~ 1808 3
107 [VV98] J164656.9+405917 Bla 16 46 56.85870434 +40 59 17.1721176   19.34 19.20 19.38   ~ 61 1
108 [VV2006] J165329.9+310756 Bla 16 53 29.9107197192 +31 07 56.875013940   18.21 17.89 17.23   ~ 69 1
109 4C 26.51 BLL 16 59 24.1494935184 +26 29 36.941671104   18.39 18.17     ~ 74 1
110 ICRF J170124.6+395437 BLL 17 01 24.63481525 +39 54 37.0915503   17.50 17.07 16.26   ~ 61 1
111 7C 1716+6839 Bla 17 16 13.93798667 +68 36 38.7451988   18.99 18.16 17.67   ~ 137 1
112 [VV98] J172635.1+321323 Bla 17 26 35.1244795896 +32 13 23.024102304   17.3 17.89 17.1   ~ 49 1
113 NVSS J173549+504911 rG 17 35 49.00517 +50 49 11.5659       22.40   ~ 57 1
114 4C 62.29 QSO 17 46 14.03413499 +62 26 54.7383195   20.91 19.51     ~ 124 1
115 ICRF J175142.6+292050 QSO 17 51 42.68393351 +29 20 50.2022244           ~ 21 1
116 QSO J1753+2848 Bla 17 53 42.47364223 +28 48 04.9388788   19.6 19.60 20.28   ~ 118 1
117 7C 175844.60+384828.00 Bla 18 00 24.76536016 +38 48 30.6974570   17.8 17.98 17.04   ~ 161 1
118 1RXS J180043.6+782806 BLL 18 00 45.6838528560 +78 28 04.018028016   16.4 15.90 16.134   ~ 793 1
119 LB 1086 Bla 18 08 21.88588528 +45 42 20.8664210   19.0 19.3 19.20   ~ 61 1
120 ICRF J181143.1+170457 BLL 18 11 43.18346508 +17 04 57.2575194       18.98   ~ 36 1
121 7C 182212.59+681701.00 QSO 18 21 59.49167990 +68 18 43.0088715           ~ 30 1
122 7C 1823+6856 BLL 18 23 32.85390331 +68 57 52.6125366       19   ~ 65 1
123 6C 184914+670207 Bla 18 49 16.07228484 +67 05 41.6802599     16.90 17.45   ~ 305 2
124 QSO B1848+283 Bla 18 50 27.5898721080 +28 25 13.155071160   17.1 17 17.16   ~ 87 1
125 NVSS J192234+153010 Rad 19 22 34.69936025 +15 30 10.0326112           ~ 66 1
126 6C 192647+611105 BLL 19 27 30.4428785736 +61 17 32.878880988   17.5 17.5 16.99   ~ 139 1
127 4C 15.66 Rad 19 30 52.76698092 +15 32 34.4273751           ~ 24 1
128 1RXS J193356.9+654001 Bla 19 33 57.3363133319 +65 40 16.832831656       20.02   ~ 53 1
129 ICRF J193933.5+381735 QSO 19 39 33.5668994088 +38 17 35.388923136           ~ 19 1
130 QSO B1954+513 Bla 19 55 42.73825546 +51 31 48.5461173     18.5 17.34   ~ 247 1
131 QSO J2002+4725 QSO 20 02 10.41824494 +47 25 28.7737471           ~ 46 1
132 ICRF J200241.9+150114 QSO 20 02 41.99923145 +15 01 14.5740653           ~ 24 1
133 NVSS J200745+372202 Rad 20 07 45.39766610 +37 22 02.3096225           ~ 13 1
134 7C 2010+4619 BLL 20 12 05.6371245432 +46 28 55.779736836           ~ 92 2
135 QSO J2015+371 BLL 20 15 28.72978661 +37 10 59.5147372     21.82 21.4   ~ 324 2
136 ICRF J201528.8+341039 Bz? 20 15 28.83189409 +34 10 39.4101753           ~ 22 1
137 QSO J2016+1632 BLL 20 16 13.86003062 +16 32 34.1130371       17.29   ~ 46 1
138 NVSS J201645+360034 Rad 20 16 45.61868192 +36 00 33.3734413           ~ 19 1
139 4C 74.25 Bla 20 17 13.07929657 +74 40 47.9999016     18.1     ~ 59 1
140 QSO B2021+614 Bla 20 22 06.68174620 +61 36 58.8047323     19.00 17.58   ~ 335 1
141 6C 202345+760123 BLL 20 22 35.5757966424 +76 11 26.171152728     18.10 17.54   ~ 109 1
142 [VV96] J202456.5+171814 Bla 20 24 56.5636552128 +17 18 13.196337192   17.5 19.5 17.51   ~ 68 1
143 ICRF J205135.5+174336 BLL 20 51 35.58294533 +17 43 36.9001514     18.0 14.41   ~ 41 1
144 ICRF J211432.8+463439 Rad 21 14 32.87568748 +46 34 39.3014327           ~ 11 0
145 LEDA 2817278 Sy1 21 22 35.4510611976 +27 38 46.446850284   17.2   16.0   ~ 10 0
146 NVSS J213701+510136 Rad 21 37 00.98616920 +51 01 36.1292444           ~ 35 1
147 QSO B2152+172 QSO 21 54 40.9004785800 +17 27 50.791568040   17.1 18.0 17.3   ~ 27 1
148 NAME BL Lac BLL 22 02 43.2913536816 +42 16 39.979416792   15.66 14.72     ~ 2397 1
149 4C 31.63 BLL 22 03 14.9756830008 +31 45 38.269473228   15.85 15.58 14.33   ~ 523 1
150 QSO B2201+1711 BLL 22 03 26.89368237 +17 25 48.2477620     19.50 14.76   ~ 221 1
151 ICRF J221051.6+201324 QSO 22 10 51.65244733 +20 13 24.0550061       21.40   ~ 25 1
152 QSO B2209+236 Bla 22 12 05.96631459 +23 55 40.5438259   19 20.66 19.69   ~ 257 1
153 ICRF J221700.8+242145 BLL 22 17 00.82117644 +24 21 45.9580153       19.21   ~ 104 1
154 ICRF J221810.9+152035 Bla 22 18 10.91390230 +15 20 35.7174349       19.33   ~ 38 1
155 3C 454.3 Bla 22 53 57.7480438728 +16 08 53.561508864   16.57 16.10 15.22   ~ 3004 2
156 ICRF J230517.5+824249 BLL 23 05 17.53959611 +82 42 49.1559387       20.47   ~ 24 1
157 6C 230937+452727 Bla 23 11 47.40897544 +45 43 56.0164210       19.19   ~ 70 1
158 ICRF J231219.6+724126 QSO 23 12 19.69788518 +72 41 26.9173389           ~ 22 1
159 ICRF J232220.3+444542 QSO 23 22 20.35808015 +44 45 42.3536071       20.70   ~ 43 1
160 ICRF J232225.9+505751 Bla 23 22 25.98217576 +50 57 51.9636751       18.6   ~ 72 1
161 QSO B2327+335 Bla 23 30 13.73765966 +33 48 36.4714906     18.5 18.71   ~ 53 1
162 6C 235150+453621 Bla 23 54 21.68022501 +45 53 04.2365520   20.6 20.60 19.1   ~ 252 1

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