2004A&A...422..515V

Query : 2004A&A...422..515V

2004A&A...422..515V - Astronomy and Astrophysics, volume 422515-522 (2004/8-1)

Radio galaxies in cooling core clusters. Renewed activity in the nucleus of 3C317?

VENTURI T., DALLACASA D. and STEFANACHI F.

Abstract (from CDS):

We present the results of VLBA observations of the radio galaxy 3C 317, associated with the cD galaxy UGC 09799 at the centre of the cooling core cluster of galaxies A2052. These observations were carried out at 1.7GHz, 4.9GHz and 8.3GHz, in polarimetric mode, and allowed us to image the parsec scale region of the source. Our analysis suggests that the nucleus of 3C 317 hosts a very young radio source. The estimated radiative age for the radio structure within the inner 10pc is ∼170yr. Given the existence of extended radio emission on the arcsecond scale, we suggest that 3C 317 is a restarted radio galaxy. The implications of this result in the light of the interaction between radio plasma and thermal hot gas in clusters of galaxies are briefly discussed.

Abstract Copyright: ∼

Journal keyword(s): galaxies: clusters: individual: Abell 2052 - galaxies: structure - radio continuum: galaxies

Simbad objects: 20

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Number of rows : 20
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 QSO B0108+388 Bla 01 11 37.31680 +39 06 28.1039     22 22.000   ~ 266 1
2 ACO 426 ClG 03 19 47.6 +41 30 54           ~ 2508 1
3 NGC 1275 Bla 03 19 48.1599902040 +41 30 42.108850836   13.10 12.48 11.09   ~ 4243 3
4 ZwCl 0335+0956 ClG 03 38 35.3 +09 57 54           ~ 402 1
5 ICRF J040549.2+380332 SyG 04 05 49.26287155 +38 03 32.2348497   18.5 18.5     ~ 187 3
6 PKS 0745-19 rG 07 47 31.3247085936 -19 17 40.013334276   19.60       ~ 422 1
7 ClG 0745-1910 ClG 07 47 32.4 -19 18 23           ~ 378 0
8 NAME Hydra I Cluster ClG 10 36 36.0 -27 31 04           ~ 905 1
9 Z 186-48 BLL 11 47 22.1297825184 +35 01 07.538786184   17.89 16.83 10.26   ~ 184 1
10 ICRF J124733.3+672316 Bla 12 47 33.32959326 +67 23 16.4488689           ~ 100 2
11 ACO 2029 ClG 15 10 54.2 +05 44 23           ~ 1020 0
12 ACO 2052 ClG 15 16 41.64 +07 01 45.5           ~ 756 1
13 Z 49-90 Sy2 15 16 44.4893939136 +07 01 17.825410740   15.19 14.17     ~ 463 4
14 ACO 2199 ClG 16 28 34.5 +39 32 26           ~ 1206 1
15 NGC 6166 Sy2 16 28 38.24470063 +39 33 04.2335319   12.78 11.78     ~ 793 2
16 ICRF J194431.5+544807 BLL 19 44 31.51155734 +54 48 07.0622434   21.732   18.591   ~ 80 1
17 QSO B1946+708 BLL 19 45 53.51966298 +70 55 48.7285673   18.726 16.70 17.199   ~ 147 2
18 ACO 2626 ClG 23 36 31.0 +21 09 36           ~ 265 0
19 6C 235239+493337 BLL 23 55 09.45814429 +49 50 08.3394994   21.101   18.400   ~ 284 1
20 ACO 4059 ClG 23 57 02.2 -34 45 58           ~ 400 1

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