2006A&A...447...63G


Query : 2006A&A...447...63G

2006A&A...447...63G - Astronomy and Astrophysics, volume 447, 63-70 (2006/2-3)

Hybrid morphology radio sources from the FIRST survey.

GAWRONSKI M.P., MARECKI A., KUNERT-BAJRASZEWSKA M. and KUS A.J.

Abstract (from CDS):

The so-called HYbrid MOrphology Radio Sources (HYMORS) are a class of objects that appear to have a mixed Fanaroff-Riley (FR) morphology in a single object; i.e. a HYMORS has an FRI-type lobe on one side of its nucleus and an FRII-type lobe on the other side. Because of this unique feature and given that the origin of the FR morphological dichotomy is still unclear, HYMORS may possibly play a crucial role in our understanding of the FR-dichotomy. As the number of known HYMORS is quite small, we aimed to increase that number by inspecting a few areas of the sky covered by the VLA FIRST survey and by selecting 21 HYMORS candidates based on the morphology shown in the FIRST images. They were observed with the VLA in B-conf. at 4.9GHz. Three objects from the initial sample turned out to be actual HYMORS and two others very likely to fulfill the criteria. These five were subsequently re-observed with the VLA in A-conf. at 1.4GHz. Our results provide strong support to the findings of Gopal-Krishna & Wiita (2000A&A...363..507G), namely that there are two different kinds of jets in HYMORS; consequently, the existence of FR-dichotomy as a whole is difficult to reconcile with the class of explanations that posit fundamental differences in the central engine.

Abstract Copyright:

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

CDS comments: Figs, Table 3: WN components of sources are not in SIMBAD.

Simbad objects: 31

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Number of rows : 31
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 4C 13.41 Sy1 10 07 26.0965408440 +12 48 56.184940764   15.81 15.68     ~ 387 2
2 FIRST J101105.4+324810 Rad 10 11 05.438 +32 48 10.90           ~ 1 0
3 FIRST J101932.3+140306 Rad 10 19 32.391 +14 03 06.92           ~ 1 0
4 FIRST J102116.1+442549 Rad 10 21 16.119 +44 25 49.73           ~ 1 0
5 FIRST J102457.0+274400 Rad 10 24 57.073 +27 44 00.88           ~ 1 0
6 FIRST J102830.7+371511 Rad 10 28 30.781 +37 15 11.79           ~ 1 0
7 NVSS J102933+295504 rG 10 29 33.803 +29 55 02.17           ~ 6 2
8 FIRST J104438.9+521539 Rad 10 44 38.63352 +52 15 37.3968           ~ 1 0
9 FIRST J104801.5+151601 Rad 10 48 01.567 +15 16 01.98           ~ 1 0
10 2MASX J11243813+3722410 Sy1 11 24 38.1615722664 +37 22 40.351378584   19.54 18.94     ~ 18 0
11 4C 51.28 rG 11 53 46.42752 +51 17 04.1604           ~ 14 1
12 FIRST J120300.6+534917 Rad 12 03 00.680 +53 49 17.77           ~ 1 0
13 SDSS J120621.94+501743.2 G 12 06 21.94 +50 17 43.2   21.38 21.34     ~ 1 1
14 SDSS J120622.11+501741.0 * 12 06 22.12 +50 17 41.0   23.94 23.15     ~ 1 1
15 6C 120350+503428 QSO 12 06 22.40424 +50 17 44.3184           ~ 10 1
16 FIRST J120656.7+481520 Rad 12 06 56.711 +48 15 20.51           ~ 1 0
17 FIRST J120946.9+463703 Q? 12 09 47.103 +46 37 05.15           ~ 2 0
18 FIRST J130316.0+314955 Rad 13 03 16.081 +31 49 55.38           ~ 1 0
19 6C 131118+505755 BLL 13 13 25.7733683880 +50 42 06.192943920           ~ 6 1
20 SDSS J131437.10+513408.1 G 13 14 37.11 +51 34 08.2   21.64 21.09     ~ 1 1
21 SDSS J131437.79+513410.6 G 13 14 37.79 +51 34 10.6   24.72 23.48     ~ 1 1
22 NVSS J131437+513413 rG 13 14 38.1259416288 +51 34 13.324101780           ~ 5 1
23 FIRST J132412.6+373325 Rad 13 24 12.658 +37 33 25.20           ~ 1 0
24 ZwCl 1326+3750 ClG 13 28.8 +37 35           ~ 2 0
25 6C 133657+394141 G 13 39 08.54568 +39 26 24.1728           ~ 7 1
26 [VV2006] J134751.5+283630 QSO 13 47 51.5850085032 +28 36 29.707097868   17.79 17.41     ~ 33 1
27 ZwCl 1348+3109 ClG 13 50 +30.9           ~ 2 0
28 FIRST J135103.2+305410 Rad 13 51 03.279 +30 54 10.10           ~ 1 0
29 4C 32.49 Rad 15 44 48.4 +32 08 45           ~ 14 0
30 4C -03.64 BLL 17 28 50.2351388016 -03 50 50.435948724           ~ 22 1
31 NVSS J185737+380033 rG 18 57 37.500 +38 00 32.20   14.9       ~ 54 1

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2022.05.24-11:44:08

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