2010A&A...519A..45O


Query : 2010A&A...519A..45O

2010A&A...519A..45O - Astronomy and Astrophysics, volume 519, A45-45 (2010/9-1)

TANAMI: tracking active galactic nuclei with austral milliarcsecond interferometry. I. First-epoch 8.4GHz images.

OJHA R., KADLER M., BOECK M., BOOTH R., DUTKA M.S., EDWARDS P.G., FEY A.L., FUHRMANN L., GAUME R.A., HASE H., HORIUCHI S., JAUNCEY D.L., JOHNSTON K.J., KATZ U., LISTER M., LOVELL J.E.J., MUELLER C., PLOETZ C., QUICK J.F.H., ROS E., TAYLOR G.B., THOMPSON D.J., TINGAY S.J., TOSTI G., TZIOUMIS A.K., WILMS J. and ZENSUS J.A.

Abstract (from CDS):

A number of theoretical models vie to explain the γ-ray emission from active galactic nuclei (AGN). This was a key discovery of EGRET. With its broader energy coverage, higher resolution, wider field of view and greater sensitivity, the Large Area Telescope (LAT) of the Fermi Gamma-ray Space Telescope is dramatically increasing our knowledge of AGN γ-ray emission. However, discriminating between competing theoretical models requires quasi-simultaneous observations across the electromagnetic spectrum. By resolving the powerful parsec-scale relativistic outflows in extragalactic jets and thereby allowing us to measure critical physical properties, Very Long Baseline Interferometry observations are crucial to understanding the physics of extragalactic γ-ray objects. We introduce the TANAMI program (Tracking Active Galactic Nuclei with Austral Milliarcsecond Interferometry) which is monitoring an initial sample of 43 extragalactic jets located south of -30 degrees declination at 8.4GHz and 22GHz since 2007. All aspects of the program are discussed. First epoch results at 8.4GHz are presented along with physical parameters derived therefrom. These observations were made during 2007/2008 using the telescopes of the Australian Long Baseline Array in conjunction with Hartebeesthoek in South Africa. These data were correlated at the Swinburne University correlator. We present first epoch images for 43 sources, some observed for the first time at milliarcsecond resolution. Parameters of these images as well as physical parameters derived from them are also presented and discussed. These and subsequent images from the TANAMI survey are available at http://pulsar.sternwarte.uni-erlangen.de/tanami/ . We obtain reliable, high dynamic range images of the southern hemisphere AGN. All the quasars and BL Lac objects in the sample have a single-sided radio morphology. Galaxies are either double-sided, single-sided or irregular. About 28% of the TANAMI sample has been detected by LAT during its first three months of operations. Initial analysis suggests that when galaxies are excluded, sources detected by LAT have larger opening angles than those not detected by LAT. Brightness temperatures of LAT detections and non-detections seem to have similar distributions. The redshift distributions of the TANAMI sample and sub-samples are similar to those seen for the bright γ-ray AGN seen by LAT and EGRET but none of the sources with a redshift above 1.8 have been detected by LAT.

Abstract Copyright:

Journal keyword(s): galaxies: active - galaxies: jets - galaxies: nuclei - gamma rays: observations - quasars: general

CDS comments: Note 7 : PKS J1819+385 not in Simbad, may be a misprint for PKS J1819-6345.

Simbad objects: 55

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Number of rows : 55
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 B0047-5754 QSO 00 49 59.4728345616 -57 38 27.339177408   17.49 18.5 16.56   ~ 127 1
2 QSO B0208-512 BLL 02 10 46.2004407600 -51 01 01.893013392   17.10 16.93 14.82   ~ 437 1
3 NGC 1052 Sy2 02 41 04.79849989 -08 15 20.7519527 11.84 11.41 10.47 10.71   ~ 1286 2
4 3C 84 Sy2 03 19 48.1599902040 +41 30 42.108850836   13.10 12.48 11.09   ~ 3955 3
5 QSO B0332-403 BLL 03 34 13.65448823 -40 08 25.3979928 18.54 18.35 17.87 17.5   ~ 315 1
6 QSO B0405-385 QSO 04 06 59.03533781 -38 26 28.0423651   19.55 18.0     ~ 229 2
7 9Y-MST J0414-5339 QSO 04 13 13.4752495752 -53 32 00.554079840       18.1   ~ 49 3
8 QSO B0438-43 QSO 04 40 17.17997576 -43 33 08.6043290   19.31 19.5 18.2   ~ 279 2
9 QSO B0454-463 QSO 04 55 50.77248730 -46 15 58.6797903   17.89 17.4 16.87   ~ 210 1
10 QSO J0506-6109 QSO 05 06 43.98874900 -61 09 40.9939787   17.16 16.85 16.9   ~ 177 2
11 QSO B0516-621 BLL 05 16 44.92617055 -62 07 05.3894029 18.50 18.09 17.85 17.46   ~ 116 1
12 NAME Pic A Sy1 05 19 49.7229323856 -45 46 43.852662732   15.73 15.77 14.85   ~ 648 1
13 QSO B0521-365 BLL 05 22 57.98464178 -36 27 30.8512953   15.26 14.62 14.48   ~ 817 2
14 QSO J0529-3552 QSO 05 29 20.8178658408 -35 52 34.247378928     18.29     ~ 18 0
15 QSO B0537-441 BLL 05 38 50.36155950 -44 05 08.9390233   15.77 16.48 16   ~ 866 2
16 PSR J0614-3329 Psr 06 14 10.3479 -33 29 54.116           ~ 94 1
17 ACO 3392 ClG 06 27 05.6 -35 29 30           ~ 35 2
18 QSO B0625-354 BLL 06 27 06.7286533392 -35 29 15.363665088   14.93       ~ 179 1
19 QSO J0635-7516 QSO 06 35 46.5079301472 -75 16 16.816418256   15.96 15.75 15.82   ~ 574 1
20 QSO B1104-445 QSO 11 07 08.69412105 -44 49 07.6183013   17.84 18.2 17.37   ~ 235 1
21 QSO B1144-3755 BLL 11 47 01.37071212 -38 12 11.0235229   19.03 16.2 16.72   ~ 290 1
22 QSO J1300-3253 QSO 13 00 42.4259780568 -32 53 12.114395844     18.70 18   ~ 83 1
23 PSR J1311-3430 Psr 13 11 45.7292612136 -34 30 30.294149760   21.0   18.8   ~ 150 1
24 QSO B1313-333 QSO 13 16 07.98594757 -33 38 59.1726741   18.04 20.0 17.23   ~ 249 1
25 3EG J1316-5244 gam 13 17 -52.8           ~ 8 0
26 NAME Centaurus A Sy2 13 25 27.61521044 -43 01 08.8050291   8.18 6.84 6.66   ~ 4421 3
27 NAME VLBI 1323-527 QSO 13 26 49.22911822 -52 56 23.6331968           ~ 64 3
28 IC 4296 AGN 13 36 39.03253319 -33 57 57.0730368   11.52 12.99 10.00 10.79 ~ 489 2
29 QSO B1424-41 QSO 14 27 56.29756617 -42 06 19.4376238   18.48 17.7 16.30   ~ 473 1
30 QSO J1457-3539 BLL 14 57 26.71171449 -35 39 09.9716148   17.95 19.50 18.93   ~ 147 1
31 ICRF J150502.3-343256 QSO 15 05 02.37035128 -34 32 56.8199693       18.8   ~ 49 1
32 ICRF J155658.8-791404 Sy2 15 56 58.86979525 -79 14 04.2817241   18.80 18.800 17.84   ~ 201 1
33 QSO B1610-771 QSO 16 17 49.27644414 -77 17 18.4675417   19.19 19.0 17.32   ~ 159 1
34 ICRF J171736.0-334208 BLL 17 17 36.02929270 -33 42 08.8296186   20.93   17.3   ~ 121 1
35 NGC 6328 QSO 17 23 41.02933859 -65 00 36.6106377   13.17 13.2 11.45 12.2 ~ 237 1
36 ASASSN -14ct Bla 17 23 50.8444548552 -77 13 50.548166148           ~ 47 1
37 3EG J1720-7820 gam 17 24 53.9 -78 54 43           ~ 10 1
38 ICRF J173735.7-563403 Sy2 17 37 35.7711421992 -56 34 03.153321552   17.0       ~ 88 0
39 ICRF J180242.6-394007 Bla 18 02 42.68005300 -39 40 07.9081646       17.3   ~ 102 1
40 ICRF J180813.8-501153 QSO 18 08 13.83558848 -50 11 53.6107498       18.97   ~ 40 2
41 ICRF J181935.0-634548 Sy2 18 19 35.00241 -63 45 48.1926   16.80 14.40 13.4   ~ 146 1
42 QSO B1933-400 QSO 19 37 16.21735889 -39 58 01.5531167   18.15 19 17.43   ~ 187 2
43 QSO B1954-388 QSO 19 57 59.81927491 -38 45 06.3558881   18.47 17.07 16.73   ~ 213 1
44 QSO B2005-489 BLL 20 09 25.3903899240 -48 49 53.725051056   15.75 12.81 11.41   ~ 565 2
45 ESO 462-27 EmG 20 30 57.6137444424 -30 40 00.855414876   15.48   14.63   ~ 13 0
46 3EG J2034-3110 gam 20 34 55.2 -31 10 48           ~ 11 0
47 QSO B2052-474 QSO 20 56 16.35980507 -47 14 47.6277179   18.29 19.1 18.07   ~ 306 1
48 QSO B2106-413 QSO 21 09 33.18859274 -41 10 20.6054240   20.20 21.0 20.41   ~ 106 1
49 QSO B2149-306 QSO 21 51 55.52396937 -30 27 53.6980880   17.95 18.0 17.48   ~ 247 1
50 ESO 75-41 Sy1 21 57 05.9801262624 -69 41 23.686042524   14.23 13.79 12.94   ~ 272 1
51 QSO B2155-304 BLL 21 58 52.0652249880 -30 13 32.118447792   13.36 13.09 12.62   ~ 1708 1
52 QSO B2204-54 QSO 22 07 43.73329058 -53 46 33.8199643   18.45 18.0 18.20   ~ 156 1
53 PSR J2241-5236 Psr 22 41 42.03161 -52 36 36.2492           ~ 103 1
54 QSO B2326-477 QSO 23 29 17.7043623168 -47 30 19.113949332   16.93 16.79 16.30   ~ 188 1
55 QSO B2355-534 BLL 23 57 53.26605016 -53 11 13.6895021   18.63 17.8 16.89   ~ 163 1

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2023.11.30-11:11:41

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