1997A&A...326..919M

Query : 1997A&A...326..919M

1997A&A...326..919M - Astronomy and Astrophysics, volume 326919-923 (1997/10-3)

Asymmetric depolarization in double low-luminosity radio galaxies.

MORGANTI R., PARMA P., CAPETTI A., FANTI R. and DE RUITER H.R.

Abstract (from CDS):

To investigate the presence of the Laing-Garrington effect (i.e. the lobe containing the jet more depolarized than that containing the counter-jet), we analyse polarization data at 6 and 20cm for a sample of double low-luminosity radio galaxies. The effect is well visible, although not very strong. We therefore confirm what was inferred in a previous paper based on data at one frequency (20cm) only. Furthermore, we find that radio galaxies with strong radio cores show a more pronounced asymmetry in depolarization. We conclude that the presence of the Laing-Garrington effect in our sample is a indication that relativistic motions do occur on the kpc scale of low-luminosity radio galaxies as recently suggested by theoretical arguments and observational evidence.

Abstract Copyright: ∼

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

Simbad objects: 47

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Number of rows : 47
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 Z 479-45 rG 00 37 05.4904711536 +25 41 56.361743556   14.8       ~ 83 0
2 NGC 703 rG 01 52 39.5884468200 +36 10 16.905299520   14.5       ~ 111 0
3 Z 522-118 rG 02 09 38.5601991144 +35 47 50.778945420   14.9 13.0     ~ 154 2
4 7C 070833.00+322406.00 Sy2 07 11 47.6688944536 +32 18 35.939571104     15.8     ~ 40 1
5 Z 147-20 Sy2 07 25 37.25833 +29 57 14.7920   15.60       ~ 105 2
6 NGC 2484 Sy2 07 58 28.10812817 +37 47 11.8076475   14.15 14.9     ~ 284 1
7 4C 32.25 rG 08 31 27.4853256456 +32 19 26.844496896   16.0       ~ 87 2
8 ICRF J083915.8+285038 Sy2 08 39 15.82767313 +28 50 38.8026348   16.0 14.90     ~ 109 1
9 IC 2402 LIN 08 47 59.04615 +31 47 08.3731   14.99       ~ 140 2
10 NVSS J091153+372414 rG 09 11 53.6156551968 +37 24 13.311359568   16.1       ~ 74 1
11 NVSS J091647+381807 rG 09 16 47.7571646064 +38 18 05.833769940           ~ 49 1
12 Z 151-55 AGN 09 18 57.9197964240 +31 51 10.798451460   15.5       ~ 64 1
13 4C 36.14 rG 09 25 39.0699207816 +36 27 05.595461172   16.71       ~ 72 1
14 NVSS J100757+280147 rG 10 07 57.0708319728 +28 01 47.966189592           ~ 38 0
15 Z 155-59 SyG 11 05 22.8189218232 +30 09 41.606496180   15.7       ~ 63 0
16 Z 156-46 rG 11 16 34.6160545656 +29 15 17.112000564   15.02 14.90     ~ 133 1
17 Z 156-60 rG 11 18 59.3652976295 +27 54 07.004967404   15.7       ~ 42 1
18 NGC 3665 GiG 11 24 43.630 +38 45 46.05 13.71 13.26 11.62     ~ 364 1
19 4C 37.32 Sy2 11 44 27.1967501544 +37 08 31.907417676   17.5       ~ 67 1
20 B2 1243+26 B rG 12 46 21.86992 +26 27 16.8487   19.7       ~ 47 1
21 NGC 4839 BiC 12 57 24.3563164776 +27 29 52.203087132 13.56 13.02 12.06     ~ 482 3
22 7C 1316+2954 BLL 13 19 04.1564797728 +29 38 34.835591976   16.620 15.7     ~ 92 1
23 NGC 5096B rG 13 20 14.7283808160 +33 08 36.294146268   15.0       ~ 112 2
24 NGC 5141 Sy2 13 24 51.44109717 +36 22 42.7725745   13.9       ~ 192 1
25 NVSS J135013+281644 rG 13 50 13.5886368960 +28 16 45.022767744   16.02       ~ 43 1
26 NVSS J140000+283038 rG 14 00 00.47 +28 30 38.2           ~ 38 1
27 Z 163-41 Sy2 14 24 40.5266308536 +26 37 30.467191764   15.6 15.62     ~ 119 1
28 Z 134-24 rG 14 44 06.2864704824 +26 01 11.459794800   15.7       ~ 29 1
29 NVSS J145233+275758 rG 14 52 33.09 +27 57 59.2           ~ 67 1
30 2MASX J14575384+2832188 Sy2 14 57 53.8041194496 +28 32 18.736654452   16.00       ~ 48 1
31 7C 1457+2915 BLL 14 59 41.9530973616 +29 03 31.813059816           ~ 28 1
32 NVSS J151404+300846 rG 15 14 04.1733109056 +30 08 47.270705424   16.47       ~ 38 0
33 4C 28.39 LIN 15 23 26.9109001896 +28 37 32.500601976   15.68 15.5     ~ 78 0
34 NVSS J152744+285506 rG 15 27 44.4099822504 +28 55 06.607834248           ~ 77 1
35 NVSS J153015+290111 rG 15 30 10.2734781888 +29 00 30.167945712           ~ 52 0
36 Z 137-3 SyG 15 56 03.9120697432 +24 26 52.920616865   15.4       ~ 106 1
37 7C 160942.39+311039.00 G 16 11 40.2410530344 +31 03 01.136940408           ~ 29 1
38 NVSS J161531+272657 rG 16 15 31.3601937240 +27 26 57.334964640           ~ 45 1
39 3C 332.0 Sy1 16 17 42.5380089648 +32 22 34.372277976   18.25 17.45     ~ 268 1
40 NGC 6166 Sy2 16 28 38.24470063 +39 33 04.2335319   12.78 11.78     ~ 793 2
41 B2 1643+27 rG 16 45 27.6784943280 +27 20 05.790924312           ~ 36 0
42 4C 30.31 rG 17 00 45.2320367856 +30 08 12.874902000   15.00 14.3     ~ 76 0
43 4C 31.47 rG 17 28 20.1089243496 +31 46 02.604685584   15.5       ~ 131 1
44 NVSS J175435+323415 rG 17 54 35.5035434400 +32 34 17.203067580   15.82       ~ 42 1
45 NVSS J182852+321855 Rad 18 28 52.89 +32 18 55.0           ~ 35 1
46 Z 173-14 Sy1 18 35 03.3896172576 +32 41 46.855964616   16.50 15.39 10.50   ~ 688 1
47 Z 514-80 rG 22 38 29.417 +35 19 46.84   15.0       ~ 108 1

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