2009A&A...498..641D


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.08CET12:46:58

2009A&A...498..641D - Astronomy and Astrophysics, volume 498, 641-659 (2009/5-1)

VLBI observations of the CORALZ sample: young radio sources at low redshift.

DE VRIES N., SNELLEN I.A.G., SCHILIZZI R.T., MACK K.-H. and KAISER C.R.

Abstract (from CDS):

Young radio-loud active galactic nuclei form an important tool to investigate the evolution of extragalactic radio sources. To study the early phases of expanding radio sources, we have constructed CORALZ, a sample of 25 compact (θ<2'') radio sources associated with nearby (z<0.16) galaxies. In this paper we determine the morphologies, linear sizes, and place first constraints on the lobe expansion speeds of the sources in the sample. We observed the radio sources from the CORALZ sample with MERLIN at 1.4GHz or 1.6GHz, the EVN at 1.6GHz, and global VLBI at 1.6GHz and/or 5.0GHz. Radio maps, morphological classifications, and linear sizes are presented for all sources in the CORALZ sample. We have determined a first upper limit to the expansion velocity of one of the sources, which is remarkably low compared to the brighter GPS sources at higher redshifts, indicating a relation between radio luminosity and expansion speed, in agreement with analytical models. In addition we present further strong evidence that the spectral turnovers in GPS and CSS sources are caused by synchrotron self-absorption (SSA): the CORALZ sources are significantly offset from the well-known correlation between spectral peak frequency and angular size, but this correlation is recovered after correcting for the flux-density dependence, as predicted by SSA theory.

Abstract Copyright:

Journal keyword(s): galaxies: active - radio continuum: galaxies

Simbad objects: 45

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Number of rows : 45

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NVSS J003808+230327 rG 00 38 08.10240 +23 03 28.4400           ~ 29 1
2 QSO B0108+388 Bla 01 11 37.31680 +39 06 28.1039     22 22.000   ~ 242 1
3 QSO B0646+600 QSO 06 50 31.2543062 +60 01 44.554767   18.9 18.6 19.65   ~ 108 1
4 QSO B0710+439 QSO 07 13 38.16412910 +43 49 17.2071530   20.7       ~ 233 0
5 2MASX J07150996+4525556 Bla 07 15 09.9 +45 25 56           ~ 8 1
6 2MASX J07332855+5605422 G 07 33 28.6155259744 +56 05 41.755946814           ~ 25 1
7 2MASX J07393481+4954389 Bla 07 39 34.8486965630 +49 54 38.738549042           ~ 8 1
8 FIRST J080454.9+433537 Rad 08 04 54.91 +43 35 37.2           ~ 8 0
9 2MASX J08313978+4608005 Sy2 08 31 39.8019118930 +46 08 00.764126795   18.94 18.07 13.6   ~ 25 0
10 7C 083313.50+441135.00 Sy2 08 36 37.8438720535 +44 01 09.576339300           ~ 19 1
11 ICRF J090615.5+463619 Sy1 09 06 15.5398018 +46 36 19.024070   16.80 16.08     ~ 43 1
12 ICRF J092703.0+390220 Sy1 09 27 03.0139516273 +39 02 20.847968628   17.17 17.00 16.486   ~ 937 1
13 NVSS J093609+331308 rG 09 36 09.3741202289 +33 13 08.449032065       13.85   ~ 17 1
14 NVSS J101636+563927 Rad 10 16 36.108 +56 39 26.36           ~ 3 1
15 NVSS J102618+454229 rG 10 26 18.2618853185 +45 42 29.388674878           ~ 9 1
16 ICRF J103507.0+562846 Sy2 10 35 07.0400250 +56 28 46.795465   20.2 21.244 20.200   ~ 179 1
17 UGC 5771 LIN 10 37 19.336 +43 35 15.33   14.6       ~ 63 1
18 NGC 3468 Bla 10 57 31.2 +40 56 46   14.2       ~ 46 1
19 ICRF J111120.0+195536 Sy2 11 11 20.0656524 +19 55 36.000157   18.5 18.5     ~ 50 1
20 7C 114722.00+554500.00 Bla 11 50 00.1 +55 28 21       14.3   ~ 19 1
21 87GB 115453.8+433443 Sy1 11 57 27.6031829026 +43 18 06.330860931   18.76 18.33     ~ 33 1
22 2MASX J12090278+4115594 BiC 12 09 02.791 +41 15 59.29           ~ 10 1
23 ICRF J131739.1+411545 Bla 13 17 39.1937723 +41 15 45.617736           ~ 36 0
24 2MASX J13251331+3955536 Bla 13 25 13.3649829323 +39 55 53.236928416           ~ 12 0
25 2MASX J13403520+4448176 LIN 13 40 35.2050252682 +44 48 17.451810329           ~ 16 1
26 NVSS J134158+541525 Rad 13 41 58.5 +54 15 25           ~ 3 1
27 2MASX J14005162+5216068 LIN 14 00 51.5815860251 +52 16 06.474939542           ~ 14 1
28 QSO B1404+286 BLL 14 07 00.3933203928 +28 27 14.695133019   16.13 15.35 10.29   ~ 693 2
29 87GB 140732.1+361738 Sy1 14 09 42.448 +36 04 15.91           ~ 18 1
30 ICRF J141414.8+455448 G 14 14 14.8525141 +45 54 48.732239           ~ 27 1
31 NVSS J143521+505122 rG 14 35 21.7 +50 51 23           ~ 13 1
32 MCG+06-33-022 PaG 15 08 05.7 +34 23 23   15.6       ~ 33 1
33 7C 155812.19+533918.00 Sy2 15 59 27.644 +53 30 52.05   19.68 18.86     ~ 18 1
34 4C 52.37 Sy1 16 02 46.443 +52 43 58.15   18.50 17.76     ~ 30 1
35 4C 40.34 BLL 16 11 48.5281804506 +40 40 20.988823191           ~ 19 1
36 2MASX J17033041+4540470 Sy1 17 03 30.3826208591 +45 40 47.167625574   16.0       ~ 130 2
37 2MASX J17185436+5441486 Sy2 17 18 54.2347 +54 41 47.464           ~ 71 1
38 NGC 6328 QSO 17 23 41.02938963 -65 00 36.6113150   13.17 13.2 11.45 12.2 ~ 212 1
39 ICRF J173458.3+092658 Bla 17 34 58.3768027 +09 26 58.265118       20.8   ~ 56 1
40 4C 51.37 Bla 17 40 36.9779934388 +52 11 43.411910710   18.16 18.5 16.73   ~ 369 1
41 NVSS J184535+354116 rG 18 45 35.1088474 +35 41 16.726462   19.830   21.900   ~ 60 0
42 ICRF J193925.0-634245 Sy2 19 39 25.02671 -63 42 45.6255   18.87 18.37 17.64   ~ 995 1
43 ICRF J194431.5+544807 BLL 19 44 31.5116147 +54 48 07.062154   21.732   18.591   ~ 65 1
44 ICRF J202206.6+613658 Sy2 20 22 06.68174818 +61 36 58.8047862     19.5 17.58   ~ 304 1
45 ICRF J235509.4+495008 BLL 23 55 09.45814510 +49 50 08.3395036   21.101   18.400   ~ 254 1

    Equat.    Gal    SGal    Ecl

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2021.03.08-12:46:58

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